{"id":4508,"date":"2021-12-04T10:59:47","date_gmt":"2021-12-04T18:59:47","guid":{"rendered":"https:\/\/www.xh86.me\/?p=4508"},"modified":"2021-12-04T12:04:22","modified_gmt":"2021-12-04T20:04:22","slug":"%e8%81%8a%e8%81%8a%e6%8e%a5%e5%8f%a3%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e7%9a%8411%e4%b8%aa%e5%b0%8f%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=4508","title":{"rendered":"\u63a5\u53e3\u6027\u80fd\u4f18\u5316\u768411\u4e2a\u5c0f\u6280\u5de7"},"content":{"rendered":"
\n
\n
\n

\u63a5\u53e3\u6027\u80fd\u4f18\u5316<\/strong>\u5bf9\u4e8e\u4ece\u4e8b\u540e\u7aef\u5f00\u53d1\u7684\u540c\u5b66\u6765\u8bf4\uff0c\u80af\u5b9a\u518d\u719f\u6089\u4e0d\u8fc7\u4e86\uff0c\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u8ddf\u5f00\u53d1\u8bed\u8a00\u65e0\u5173\u7684\u516c\u5171\u95ee\u9898\u3002<\/p>\n

\u8be5\u95ee\u9898\u8bf4\u7b80\u5355\u4e5f\u7b80\u5355\uff0c\u8bf4\u590d\u6742\u4e5f\u590d\u6742\u3002<\/p>\n

\u6709\u65f6\u5019\uff0c\u53ea\u9700\u52a0\u4e2a\u7d22\u5f15\u5c31\u80fd\u89e3\u51b3\u95ee\u9898\u3002<\/p>\n

\u6709\u65f6\u5019\uff0c\u9700\u8981\u505a\u4ee3\u7801\u91cd\u6784\u3002<\/p>\n

\u6709\u65f6\u5019\uff0c\u9700\u8981\u589e\u52a0\u7f13\u5b58\u3002<\/p>\n

\u6709\u65f6\u5019\uff0c\u9700\u8981\u5f15\u5165\u4e00\u4e9b\u4e2d\u95f4\u4ef6\uff0c\u6bd4\u5982mq\u3002<\/p>\n

\u6709\u65f6\u5019\uff0c\u9700\u8981\u9700\u8981\u5206\u5e93\u5206\u8868\u3002<\/p>\n

\u6709\u65f6\u5019\uff0c\u9700\u8981\u62c6\u5206\u670d\u52a1\u3002<\/p>\n

\u7b49\u7b49\u3002\u3002\u3002<\/p>\n

\u5bfc\u81f4\u63a5\u53e3\u6027\u80fd\u95ee\u9898\u7684\u539f\u56e0\u5343\u5947\u767e\u602a\uff0c\u4e0d\u540c\u7684\u9879\u76ee\u4e0d\u540c\u7684\u63a5\u53e3\uff0c\u539f\u56e0\u53ef\u80fd\u4e5f\u4e0d\u4e00\u6837\u3002<\/p>\n

\u672c\u6587\u6211\u603b\u7ed3\u4e86\u4e00\u4e9b\u884c\u4e4b\u6709\u6548\u7684\uff0c\u4f18\u5316\u63a5\u53e3\u6027\u80fd\u7684\u529e\u6cd5\uff0c\u7ed9\u6709\u9700\u8981\u7684\u670b\u53cb\u4e00\u4e2a\u53c2\u8003\u3002<\/p>\n

1.\u7d22\u5f15<\/span><\/h2>\n

\u63a5\u53e3\u6027\u80fd\u4f18\u5316\u5927\u5bb6\u7b2c\u4e00\u4e2a\u60f3\u5230\u7684\u53ef\u80fd\u662f\uff1a\u4f18\u5316\u7d22\u5f15<\/code>\u3002<\/p>\n

\u6ca1\u9519\uff0c\u4f18\u5316\u7d22\u5f15\u7684\u6210\u672c\u662f\u6700\u5c0f\u7684\u3002<\/p>\n

\u4f60\u901a\u8fc7\u67e5\u770b\u7ebf\u4e0a\u65e5\u5fd7\u6216\u8005\u76d1\u63a7\u62a5\u544a\uff0c\u67e5\u5230\u67d0\u4e2a\u63a5\u53e3\u7528\u5230\u7684\u67d0\u6761sql\u8bed\u53e5\u8017\u65f6\u6bd4\u8f83\u957f\u3002<\/p>\n

\u8fd9\u65f6\u4f60\u53ef\u80fd\u4f1a\u6709\u4e0b\u9762\u8fd9\u4e9b\u7591\u95ee\uff1a<\/p>\n

    \n
  1. \n
    \u8be5sql\u8bed\u53e5\u52a0\u7d22\u5f15\u4e86\u6ca1\uff1f<\/section>\n<\/li>\n
  2. \n
    \u52a0\u7684\u7d22\u5f15\u751f\u6548\u4e86\u6ca1\uff1f<\/section>\n<\/li>\n
  3. \n
    mysql\u9009\u9519\u7d22\u5f15\u4e86\u6ca1\uff1f<\/section>\n<\/li>\n<\/ol>\n

    1.1 \u6ca1\u52a0\u7d22\u5f15<\/span><\/h3>\n

    sql\u8bed\u53e5\u4e2dwhere<\/code>\u6761\u4ef6\u7684\u5173\u952e\u5b57\u6bb5\uff0c\u6216\u8005order by<\/code>\u540e\u9762\u7684\u6392\u5e8f\u5b57\u6bb5\uff0c\u5fd8\u4e86\u52a0\u7d22\u5f15\uff0c\u8fd9\u4e2a\u95ee\u9898\u5728\u9879\u76ee\u4e2d\u5f88\u5e38\u89c1\u3002<\/p>\n

    \u9879\u76ee\u521a\u5f00\u59cb\u7684\u65f6\u5019\uff0c\u7531\u4e8e\u8868\u4e2d\u7684\u6570\u636e\u91cf\u5c0f\uff0c\u52a0\u4e0d\u52a0\u7d22\u5f15sql\u67e5\u8be2\u6027\u80fd\u5dee\u522b\u4e0d\u5927\u3002<\/p>\n

    \u540e\u6765\uff0c\u968f\u7740\u4e1a\u52a1\u7684\u53d1\u5c55\uff0c\u8868\u4e2d\u6570\u636e\u91cf\u8d8a\u6765\u8d8a\u591a\uff0c\u5c31\u4e0d\u5f97\u4e0d\u52a0\u7d22\u5f15\u4e86\u3002<\/p>\n

    \u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\uff1a<\/p>\n

    show\u00a0index\u00a0from\u00a0`order`;\r\n<\/code><\/pre>\n
    \u80fd\u5355\u72ec\u67e5\u770b\u67d0\u5f20\u8868\u7684\u7d22\u5f15\u60c5\u51b5\u3002<\/p>\n
    \u4e5f\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\uff1a<\/p>\n
    show\u00a0create\u00a0table\u00a0`order`;\r\n<\/code><\/pre>\n
    \u67e5\u770b\u6574\u5f20\u8868\u7684\u5efa\u8868\u8bed\u53e5\uff0c\u91cc\u9762\u540c\u6837\u4f1a\u663e\u793a\u7d22\u5f15\u60c5\u51b5\u3002<\/p>\n
    \u901a\u8fc7ALTER TABLE<\/code>\u547d\u4ee4\u53ef\u4ee5\u6dfb\u52a0\u7d22\u5f15\uff1a<\/p>\n
    ALTER\u00a0TABLE\u00a0`order`\u00a0ADD\u00a0INDEX\u00a0idx_name<\/span>\u00a0(name)<\/span><\/span>;\r\n<\/code><\/pre>\n
    \u4e5f\u53ef\u4ee5\u901a\u8fc7CREATE INDEX<\/code>\u547d\u4ee4\u6dfb\u52a0\u7d22\u5f15\uff1a<\/p>\n
    CREATE\u00a0INDEX\u00a0idx_name\u00a0ON\u00a0`order`\u00a0(name);\r\n<\/code><\/pre>\n
    \u4e0d\u8fc7\u8fd9\u91cc\u6709\u4e00\u4e2a\u9700\u8981\u6ce8\u610f\u7684\u5730\u65b9\u662f\uff1a\u60f3\u901a\u8fc7\u547d\u4ee4\u4fee\u6539\u7d22\u5f15\uff0c\u662f\u4e0d\u884c\u7684\u3002<\/p>\n
    \u76ee\u524d\u5728mysql\u4e2d\u5982\u679c\u60f3\u8981\u4fee\u6539\u7d22\u5f15\uff0c\u53ea\u80fd\u5148\u5220\u9664\u7d22\u5f15\uff0c\u518d\u91cd\u65b0\u6dfb\u52a0\u65b0\u7684\u3002<\/p>\n
    \u5220\u9664\u7d22\u5f15\u53ef\u4ee5\u7528DROP INDEX<\/code>\u547d\u4ee4\uff1a<\/p>\n
    ALTER\u00a0TABLE\u00a0`order`\u00a0DROP\u00a0INDEX\u00a0idx_name;\r\n<\/code><\/pre>\n
    \u7528DROP INDEX<\/code>\u547d\u4ee4\u4e5f\u884c\uff1a<\/p>\n
    DROP\u00a0INDEX\u00a0idx_name\u00a0ON\u00a0`order`;\r\n<\/code><\/pre>\n
    1.2 \u7d22\u5f15\u6ca1\u751f\u6548<\/span><\/h3>\n
    \u901a\u8fc7\u4e0a\u9762\u7684\u547d\u4ee4\u6211\u4eec\u5df2\u7ecf\u80fd\u591f\u786e\u8ba4\u7d22\u5f15\u662f\u6709\u7684\uff0c\u4f46\u5b83\u751f\u6548\u4e86\u6ca1\uff1f\u6b64\u65f6\u4f60\u5185\u5fc3\u6216\u8bb8\u4f1a\u5192\u51fa\u8fd9\u6837\u4e00\u4e2a\u7591\u95ee\u3002<\/p>\n
    \u90a3\u4e48\uff0c\u5982\u4f55\u67e5\u770b\u7d22\u5f15\u6709\u6ca1\u6709\u751f\u6548\u5462\uff1f<\/p>\n
    \u7b54\uff1a\u53ef\u4ee5\u4f7f\u7528explain<\/code>\u547d\u4ee4\uff0c\u67e5\u770bmysql\u7684\u6267\u884c\u8ba1\u5212\uff0c\u5b83\u4f1a\u663e\u793a\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n
    \u4f8b\u5982\uff1a<\/p>\n
    explain\u00a0select\u00a0*\u00a0from\u00a0`order`\u00a0where\u00a0code='002'<\/span>;\r\n<\/code><\/pre>\n
    \u7ed3\u679c\uff1a
    <\/div>\u901a\u8fc7\u8fd9\u51e0\u5217\u53ef\u4ee5\u5224\u65ad\u7d22\u5f15\u4f7f\u7528\u60c5\u51b5\uff0c\u6267\u884c\u8ba1\u5212\u5305\u542b\u5217\u7684\u542b\u4e49\u5982\u4e0b\u56fe\u6240\u793a\uff1a
    <\/div>\u5982\u679c\u4f60\u60f3\u8fdb\u4e00\u6b65\u4e86\u89e3explain\u7684\u8be6\u7ec6\u7528\u6cd5\uff0c\u53ef\u4ee5\u770b\u770b\u6211\u7684\u53e6\u4e00\u7bc7\u6587\u7ae0\u300a\u300b<\/p>\n
    \u8bf4\u5b9e\u8bdd\uff0csql\u8bed\u53e5\u6ca1\u6709\u8d70\u7d22\u5f15\uff0c\u6392\u9664\u6ca1\u6709\u5efa\u7d22\u5f15\u4e4b\u5916\uff0c\u6700\u5927\u7684\u53ef\u80fd\u6027\u662f\u7d22\u5f15\u5931\u6548\u4e86\u3002<\/p>\n
    \u4e0b\u9762\u8bf4\u8bf4\u7d22\u5f15\u5931\u6548\u7684\u5e38\u89c1\u539f\u56e0\uff1a
    <\/div>\u5982\u679c\u4e0d\u662f\u4e0a\u9762\u7684\u8fd9\u4e9b\u539f\u56e0\uff0c\u5219\u9700\u8981\u518d\u8fdb\u4e00\u6b65\u6392\u67e5\u4e00\u4e0b\u5176\u4ed6\u539f\u56e0\u3002<\/p>\n
    1.3 \u9009\u9519\u7d22\u5f15<\/span><\/h3>\n
    \u6b64\u5916\uff0c\u4f60\u6709\u6ca1\u6709\u9047\u5230\u8fc7\u8fd9\u6837\u4e00\u79cd\u60c5\u51b5\uff1a\u660e\u660e\u662f\u540c\u4e00\u6761sql\uff0c\u53ea\u6709\u5165\u53c2\u4e0d\u540c\u800c\u5df2\u3002\u6709\u7684\u65f6\u5019\u8d70\u7684\u7d22\u5f15a\uff0c\u6709\u7684\u65f6\u5019\u5374\u8d70\u7684\u7d22\u5f15b\uff1f<\/p>\n
    \u6ca1\u9519\uff0c\u6709\u65f6\u5019mysql\u4f1a\u9009\u9519\u7d22\u5f15\u3002<\/p>\n
    \u5fc5\u8981\u65f6\u53ef\u4ee5\u4f7f\u7528force index<\/code>\u6765\u5f3a\u5236\u67e5\u8be2sql\u8d70\u67d0\u4e2a\u7d22\u5f15\u3002<\/p>\n
    \u81f3\u4e8e\u4e3a\u4ec0\u4e48mysql\u4f1a\u9009\u9519\u7d22\u5f15\uff0c\u540e\u9762\u6709\u4e13\u95e8\u7684\u6587\u7ae0\u4ecb\u7ecd\u7684\uff0c\u8fd9\u91cc\u5148\u7559\u70b9\u60ac\u5ff5\u3002<\/p>\n
    2. sql\u4f18\u5316<\/span><\/h2>\n
    \u5982\u679c\u4f18\u5316\u4e86\u7d22\u5f15\u4e4b\u540e\uff0c\u4e5f\u6ca1\u5565\u6548\u679c\u3002<\/p>\n
    \u63a5\u4e0b\u6765\u8bd5\u7740\u4f18\u5316\u4e00\u4e0bsql\u8bed\u53e5\uff0c\u56e0\u4e3a\u5b83\u7684\u6539\u9020\u6210\u672c\u76f8\u5bf9\u4e8ejava\u4ee3\u7801\u6765\u8bf4\u4e5f\u8981\u5c0f\u5f97\u591a\u3002<\/p>\n
    \u4e0b\u9762\u7ed9\u5927\u5bb6\u5217\u4e3e\u4e86sql\u4f18\u5316\u768415\u4e2a\u5c0f\u6280\u5de7\uff1a
    <\/div>\u7531\u4e8e\u8fd9\u4e9b\u6280\u5de7\u5728\u6211\u4e4b\u524d\u7684\u6587\u7ae0\u4e2d\u5df2\u7ecf\u8be6\u7ec6\u4ecb\u7ecd\u8fc7\u4e86\uff0c\u5728\u8fd9\u91cc\u6211\u5c31\u4e0d\u6df1\u5165\u4e86\u3002<\/p>\n
    \u66f4\u8be6\u7ec6\u7684\u5185\u5bb9\uff0c\u53ef\u4ee5\u770b\u6211\u7684\u53e6\u4e00\u7bc7\u6587\u7ae0\u300a\u300b\uff0c\u76f8\u4fe1\u770b\u5b8c\u4f60\u4f1a\u6709\u5f88\u591a\u6536\u83b7\u3002<\/p>\n
    3. \u8fdc\u7a0b\u8c03\u7528<\/span><\/h2>\n
    \u5f88\u591a\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u5728\u67d0\u4e2a\u63a5\u53e3\u4e2d\uff0c\u8c03\u7528\u5176\u4ed6\u670d\u52a1\u7684\u63a5\u53e3\u3002<\/p>\n
    \u6bd4\u5982\u6709\u8fd9\u6837\u7684\u4e1a\u52a1\u573a\u666f\uff1a<\/p>\n
    \u5728\u7528\u6237\u4fe1\u606f\u67e5\u8be2\u63a5\u53e3\u4e2d\u9700\u8981\u8fd4\u56de\uff1a\u7528\u6237\u540d\u79f0\u3001\u6027\u522b\u3001\u7b49\u7ea7\u3001\u5934\u50cf\u3001\u79ef\u5206\u3001\u6210\u957f\u503c\u7b49\u4fe1\u606f\u3002<\/p>\n
    \u800c\u7528\u6237\u540d\u79f0\u3001\u6027\u522b\u3001\u7b49\u7ea7\u3001\u5934\u50cf\u5728\u7528\u6237\u670d\u52a1\u4e2d\uff0c\u79ef\u5206\u5728\u79ef\u5206\u670d\u52a1\u4e2d\uff0c\u6210\u957f\u503c\u5728\u6210\u957f\u503c\u670d\u52a1\u4e2d\u3002\u4e3a\u4e86\u6c47\u603b\u8fd9\u4e9b\u6570\u636e\u7edf\u4e00\u8fd4\u56de\uff0c\u9700\u8981\u53e6\u5916\u63d0\u4f9b\u4e00\u4e2a\u5bf9\u5916\u63a5\u53e3\u670d\u52a1\u3002<\/p>\n
    \u4e8e\u662f\uff0c\u7528\u6237\u4fe1\u606f\u67e5\u8be2\u63a5\u53e3\u9700\u8981\u8c03\u7528\u7528\u6237\u67e5\u8be2\u63a5\u53e3\u3001\u79ef\u5206\u67e5\u8be2\u63a5\u53e3 \u548c \u6210\u957f\u503c\u67e5\u8be2\u63a5\u53e3\uff0c\u7136\u540e\u6c47\u603b\u6570\u636e\u7edf\u4e00\u8fd4\u56de\u3002<\/p>\n
    \u8c03\u7528\u8fc7\u7a0b\u5982\u4e0b\u56fe\u6240\u793a\uff1a
    <\/div>\u8c03\u7528\u8fdc\u7a0b\u63a5\u53e3\u603b\u8017\u65f6 530ms = 200ms + 150ms + 180ms<\/p>\n
    \u663e\u7136\u8fd9\u79cd\u4e32\u884c\u8c03\u7528\u8fdc\u7a0b\u63a5\u53e3\u6027\u80fd\u662f\u975e\u5e38\u4e0d\u597d\u7684\uff0c\u8c03\u7528\u8fdc\u7a0b\u63a5\u53e3\u603b\u7684\u8017\u65f6\u4e3a\u6240\u6709\u7684\u8fdc\u7a0b\u63a5\u53e3\u8017\u65f6\u4e4b\u548c\u3002<\/p>\n
    \u90a3\u4e48\u5982\u4f55\u4f18\u5316\u8fdc\u7a0b\u63a5\u53e3\u6027\u80fd\u5462\uff1f<\/p>\n
    3.1 \u5e76\u884c\u8c03\u7528<\/span><\/h3>\n
    \u4e0a\u9762\u8bf4\u5230\uff0c\u65e2\u7136\u4e32\u884c\u8c03\u7528\u591a\u4e2a\u8fdc\u7a0b\u63a5\u53e3\u6027\u80fd\u5f88\u5dee\uff0c\u4e3a\u4ec0\u4e48\u4e0d\u6539\u6210\u5e76\u884c\u5462\uff1f<\/p>\n
    \u5982\u4e0b\u56fe\u6240\u793a\uff1a
    <\/div>\u8c03\u7528\u8fdc\u7a0b\u63a5\u53e3\u603b\u8017\u65f6 200ms = 200ms\uff08\u5373\u8017\u65f6\u6700\u957f\u7684\u90a3\u6b21\u8fdc\u7a0b\u63a5\u53e3\u8c03\u7528\uff09<\/p>\n
    \u5728java8\u4e4b\u524d\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0Callable<\/code>\u63a5\u53e3\uff0c\u83b7\u53d6\u7ebf\u7a0b\u8fd4\u56de\u7ed3\u679c\u3002<\/p>\n
    java8\u4ee5\u540e\u901a\u8fc7CompleteFuture<\/code>\u7c7b\u5b9e\u73b0\u8be5\u529f\u80fd\u3002\u6211\u4eec\u8fd9\u91cc\u4ee5CompleteFuture\u4e3a\u4f8b\uff1a<\/p>\n
    public<\/span>\u00a0UserInfo\u00a0getUserInfo<\/span>(Long\u00a0id)<\/span>\u00a0throws<\/span>\u00a0InterruptedException,\u00a0ExecutionException\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0\u00a0final<\/span>\u00a0UserInfo\u00a0userInfo\u00a0=\u00a0new<\/span>\u00a0UserInfo();\r\n\u00a0\u00a0\u00a0\u00a0CompletableFuture\u00a0userFuture\u00a0=\u00a0CompletableFuture.supplyAsync(()\u00a0->\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0getRemoteUserAndFill(id,\u00a0userInfo);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0Boolean.TRUE;\r\n\u00a0\u00a0\u00a0\u00a0},\u00a0executor);<\/code><\/pre>\n
    CompletableFuture\u00a0bonusFuture\u00a0=\u00a0CompletableFuture.supplyAsync(()\u00a0->\u00a0{
    \ngetRemoteBonusAndFill(id,\u00a0userInfo);
    \nreturn<\/span>\u00a0Boolean.TRUE;
    \n},\u00a0executor);<\/p>\n
    <\/code><\/pre>\n
    CompletableFuture\u00a0growthFuture\u00a0=\u00a0CompletableFuture.supplyAsync(()\u00a0->\u00a0{
    \ngetRemoteGrowthAndFill(id,\u00a0userInfo);
    \nreturn<\/span>\u00a0Boolean.TRUE;
    \n},\u00a0executor);
    \nCompletableFuture.allOf(userFuture,\u00a0bonusFuture,\u00a0growthFuture).join();<\/p>\n
    <\/code><\/pre>\n
    userFuture.get();
    \nbonusFuture.get();
    \ngrowthFuture.get();<\/p>\n
    <\/code><\/pre>\n
    return<\/span>\u00a0userInfo;
    \n}<\/p>\n
    <\/code><\/pre>\n
    \n
    \u6e29\u99a8\u63d0\u9192\u4e00\u4e0b\uff0c\u8fd9\u4e24\u79cd\u65b9\u5f0f\u522b\u5fd8\u4e86\u4f7f\u7528\u7ebf\u7a0b\u6c60\u3002\u793a\u4f8b\u4e2d\u6211\u7528\u5230\u4e86executor\uff0c\u8868\u793a\u81ea\u5b9a\u4e49\u7684\u7ebf\u7a0b\u6c60\uff0c\u4e3a\u4e86\u9632\u6b62\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u51fa\u73b0\u7ebf\u7a0b\u8fc7\u591a\u7684\u95ee\u9898\u3002<\/p>\n<\/blockquote>\n
    3.2 \u6570\u636e\u5f02\u6784<\/span><\/h3>\n
    \u4e0a\u9762\u8bf4\u5230\u7684\u7528\u6237\u4fe1\u606f\u67e5\u8be2\u63a5\u53e3\u9700\u8981\u8c03\u7528\u7528\u6237\u67e5\u8be2\u63a5\u53e3\u3001\u79ef\u5206\u67e5\u8be2\u63a5\u53e3 \u548c \u6210\u957f\u503c\u67e5\u8be2\u63a5\u53e3\uff0c\u7136\u540e\u6c47\u603b\u6570\u636e\u7edf\u4e00\u8fd4\u56de\u3002<\/p>\n
    \u90a3\u4e48\uff0c\u6211\u4eec\u80fd\u4e0d\u80fd\u628a\u6570\u636e\u5197\u4f59\u4e00\u4e0b\uff0c\u628a\u7528\u6237\u4fe1\u606f\u3001\u79ef\u5206\u548c\u6210\u957f\u503c\u7684\u6570\u636e\u7edf\u4e00\u5b58\u50a8\u5230\u4e00\u4e2a\u5730\u65b9\uff0c\u6bd4\u5982\uff1aredis\uff0c\u5b58\u7684\u6570\u636e\u7ed3\u6784\u5c31\u662f\u7528\u6237\u4fe1\u606f\u67e5\u8be2\u63a5\u53e3\u6240\u9700\u8981\u7684\u5185\u5bb9\u3002\u7136\u540e\u901a\u8fc7\u7528\u6237id\uff0c\u76f4\u63a5\u4eceredis\u4e2d\u67e5\u8be2\u6570\u636e\u51fa\u6765\uff0c\u4e0d\u5c31OK\u4e86\uff1f<\/p>\n
    \u5982\u679c\u5728\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u4e0b\uff0c\u4e3a\u4e86\u63d0\u5347\u63a5\u53e3\u6027\u80fd\uff0c\u8fdc\u7a0b\u63a5\u53e3\u8c03\u7528\u5927\u6982\u7387\u4f1a\u88ab\u53bb\u6389\uff0c\u800c\u6539\u6210\u4fdd\u5b58\u5197\u4f59\u6570\u636e\u7684\u6570\u636e\u5f02\u6784\u65b9\u6848\u3002<\/p>\n
    <\/div>\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u4f7f\u7528\u4e86\u6570\u636e\u5f02\u6784\u65b9\u6848\uff0c\u5c31\u53ef\u80fd\u4f1a\u51fa\u73b0\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898\u3002<\/p>\n
    \u7528\u6237\u4fe1\u606f\u3001\u79ef\u5206\u548c\u6210\u957f\u503c\u6709\u66f4\u65b0\u7684\u8bdd\uff0c\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\uff0c\u4f1a\u5148\u66f4\u65b0\u5230\u6570\u636e\u5e93\uff0c\u7136\u540e\u540c\u6b65\u5230redis\u3002\u4f46\u8fd9\u79cd\u8de8\u5e93\u7684\u64cd\u4f5c\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e24\u8fb9\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u4ea7\u751f\u3002<\/p>\n
    4. \u91cd\u590d\u8c03\u7528<\/span><\/h2>\n
    \u91cd\u590d\u8c03\u7528<\/code>\u5728\u6211\u4eec\u7684\u65e5\u5e38\u5de5\u4f5c\u4ee3\u7801\u4e2d\u53ef\u4ee5\u8bf4\u968f\u5904\u53ef\u89c1\uff0c\u4f46\u5982\u679c\u6ca1\u6709\u63a7\u5236\u597d\uff0c\u4f1a\u975e\u5e38\u5f71\u54cd\u63a5\u53e3\u7684\u6027\u80fd\u3002<\/p>\n
    \u4e0d\u4fe1\uff0c\u6211\u4eec\u4e00\u8d77\u770b\u770b\u3002<\/p>\n
    4.1 \u5faa\u73af\u67e5\u6570\u636e\u5e93<\/span><\/h3>\n
    \u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u4ece\u6307\u5b9a\u7684\u7528\u6237\u96c6\u5408\u4e2d\uff0c\u67e5\u8be2\u51fa\u6709\u54ea\u4e9b\u662f\u5728\u6570\u636e\u5e93\u4e2d\u5df2\u7ecf\u5b58\u5728\u7684\u3002<\/p>\n
    \u5b9e\u73b0\u4ee3\u7801\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a<\/p>\n
    public<\/span>\u00a0List<User>\u00a0queryUser<\/span>(List<User>\u00a0searchList)<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(CollectionUtils.isEmpty(searchList))\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0Collections.emptyList();\r\n\u00a0\u00a0\u00a0\u00a0}<\/code><\/pre>\n
    List<User>\u00a0result\u00a0=\u00a0Lists.newArrayList();
    \nsearchList.forEach(user\u00a0->\u00a0result.add(userMapper.getUserById(user.getId())));
    \nreturn<\/span>\u00a0result;
    \n}<\/p>\n
    <\/code><\/pre>\n
    \u8fd9\u91cc\u5982\u679c\u670950\u4e2a\u7528\u6237\uff0c\u5219\u9700\u8981\u5faa\u73af50\u6b21\uff0c\u53bb\u67e5\u8be2\u6570\u636e\u5e93\u3002\u6211\u4eec\u90fd\u77e5\u9053\uff0c\u6bcf\u67e5\u8be2\u4e00\u6b21\u6570\u636e\u5e93\uff0c\u5c31\u662f\u4e00\u6b21\u8fdc\u7a0b\u8c03\u7528\u3002<\/p>\n
    \u5982\u679c\u67e5\u8be250\u6b21\u6570\u636e\u5e93\uff0c\u5c31\u670950\u6b21\u8fdc\u7a0b\u8c03\u7528\uff0c\u8fd9\u662f\u975e\u5e38\u8017\u65f6\u7684\u64cd\u4f5c\u3002<\/p>\n
    \u90a3\u4e48\uff0c\u6211\u4eec\u5982\u4f55\u4f18\u5316\u5462\uff1f<\/p>\n
    \u5177\u4f53\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
    public<\/span>\u00a0List<User>\u00a0queryUser<\/span>(List<User>\u00a0searchList)<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(CollectionUtils.isEmpty(searchList))\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0Collections.emptyList();\r\n\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0List<Long>\u00a0ids\u00a0=\u00a0searchList.stream().map(User::getId).collect(Collectors.toList());\r\n\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0userMapper.getUserByIds(ids);\r\n}\r\n<\/code><\/pre>\n
    \u63d0\u4f9b\u4e00\u4e2a\u6839\u636e\u7528\u6237id\u96c6\u5408\u6279\u91cf\u67e5\u8be2\u7528\u6237\u7684\u63a5\u53e3\uff0c\u53ea\u8fdc\u7a0b\u8c03\u7528\u4e00\u6b21\uff0c\u5c31\u80fd\u67e5\u8be2\u51fa\u6240\u6709\u7684\u6570\u636e\u3002<\/p>\n
    \n
    \u8fd9\u91cc\u6709\u4e2a\u9700\u8981\u6ce8\u610f\u7684\u5730\u65b9\u662f\uff1aid\u96c6\u5408\u7684\u5927\u5c0f\u8981\u505a\u9650\u5236\uff0c\u6700\u597d\u4e00\u6b21\u4e0d\u8981\u8bf7\u6c42\u592a\u591a\u7684\u6570\u636e\u3002\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u800c\u5b9a\uff0c\u5efa\u8bae\u63a7\u5236\u6bcf\u6b21\u8bf7\u6c42\u7684\u8bb0\u5f55\u6761\u6570\u5728500\u4ee5\u5185\u3002<\/p>\n<\/blockquote>\n
    4.2 \u6b7b\u5faa\u73af<\/span><\/h3>\n
    \u6709\u4e9b\u5c0f\u4f19\u4f34\u770b\u5230\u8fd9\u4e2a\u6807\u9898\uff0c\u53ef\u80fd\u4f1a\u611f\u5230\u6709\u70b9\u610f\u5916\uff0c\u6b7b\u5faa\u73af\u4e5f\u7b97\uff1f<\/p>\n
    \u4ee3\u7801\u4e2d\u4e0d\u662f\u5e94\u8be5\u907f\u514d\u6b7b\u5faa\u73af\u5417\uff1f\u4e3a\u5565\u8fd8\u662f\u4f1a\u4ea7\u751f\u6b7b\u5faa\u73af\uff1f<\/p>\n
    \u6709\u65f6\u5019\u6b7b\u5faa\u73af\u662f\u6211\u4eec\u81ea\u5df1\u5199\u7684\uff0c\u4f8b\u5982\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\uff1a<\/p>\n
    while<\/span>(true<\/span>)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0if<\/span>(condition)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break<\/span>;\r\n\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0System.out.println(\"do\u00a0samething\"<\/span>);\r\n}\r\n<\/code><\/pre>\n
    \u8fd9\u91cc\u4f7f\u7528\u4e86while(true)\u7684\u5faa\u73af\u8c03\u7528\uff0c\u8fd9\u79cd\u5199\u6cd5\u5728CAS\u81ea\u65cb\u9501<\/code>\u4e2d\u4f7f\u7528\u6bd4\u8f83\u591a\u3002<\/p>\n
    \u5f53\u6ee1\u8db3condition\u7b49\u4e8etrue\u7684\u65f6\u5019\uff0c\u5219\u81ea\u52a8\u9000\u51fa\u8be5\u5faa\u73af\u3002<\/p>\n
    \u5982\u679ccondition\u6761\u4ef6\u975e\u5e38\u590d\u6742\uff0c\u4e00\u65e6\u51fa\u73b0\u5224\u65ad\u4e0d\u6b63\u786e\uff0c\u6216\u8005\u5c11\u5199\u4e86\u4e00\u4e9b\u903b\u8f91\u5224\u65ad\uff0c\u5c31\u53ef\u80fd\u5728\u67d0\u4e9b\u573a\u666f\u4e0b\u51fa\u73b0\u6b7b\u5faa\u73af\u7684\u95ee\u9898\u3002<\/p>\n
    \u51fa\u73b0\u6b7b\u5faa\u73af\uff0c\u5927\u6982\u7387\u662f\u5f00\u53d1\u4eba\u5458\u4eba\u4e3a\u7684bug\u5bfc\u81f4\u7684\uff0c\u4e0d\u8fc7\u8fd9\u79cd\u60c5\u51b5\u5f88\u5bb9\u6613\u88ab\u6d4b\u51fa\u6765\u3002<\/p>\n
    \n
    \u8fd8\u6709\u4e00\u79cd\u9690\u85cf\u7684\u6bd4\u8f83\u6df1\u7684\u6b7b\u5faa\u73af\uff0c\u662f\u7531\u4e8e\u4ee3\u7801\u5199\u7684\u4e0d\u592a\u4e25\u8c28\u5bfc\u81f4\u7684\u3002\u5982\u679c\u7528\u6b63\u5e38\u6570\u636e\uff0c\u53ef\u80fd\u6d4b\u4e0d\u51fa\u95ee\u9898\uff0c\u4f46\u4e00\u65e6\u51fa\u73b0\u5f02\u5e38\u6570\u636e\uff0c\u5c31\u4f1a\u7acb\u5373\u51fa\u73b0\u6b7b\u5faa\u73af\u3002<\/p>\n<\/blockquote>\n
    4.3 \u65e0\u9650\u9012\u5f52<\/span><\/h3>\n
    \u5982\u679c\u60f3\u8981\u6253\u5370\u67d0\u4e2a\u5206\u7c7b\u7684\u6240\u6709\u7236\u5206\u7c7b\uff0c\u53ef\u4ee5\u7528\u7c7b\u4f3c\u8fd9\u6837\u7684\u9012\u5f52\u65b9\u6cd5\u5b9e\u73b0\uff1a<\/p>\n
    public<\/span>\u00a0void<\/span>\u00a0printCategory<\/span>(Category\u00a0category)<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0if<\/span>(category\u00a0==\u00a0null<\/span>\u00a0\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0||\u00a0category.getParentId()\u00a0==\u00a0null<\/span>)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>;\r\n\u00a0\u00a0}\u00a0\r\n\u00a0\u00a0System.out.println(\"\u7236\u5206\u7c7b\u540d\u79f0\uff1a\"<\/span>+\u00a0category.getName());\r\n\u00a0\u00a0Category\u00a0parent\u00a0=\u00a0categoryMapper.getCategoryById(category.getParentId());\r\n\u00a0\u00a0printCategory(parent);\r\n}\r\n<\/code><\/pre>\n
    \u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u8fd9\u6bb5\u4ee3\u7801\u662f\u6ca1\u6709\u95ee\u9898\u7684\u3002<\/p>\n
    \u4f46\u5982\u679c\u67d0\u6b21\u6709\u4eba\u8bef\u64cd\u4f5c\uff0c\u628a\u67d0\u4e2a\u5206\u7c7b\u7684parentId\u6307\u5411\u4e86\u5b83\u81ea\u5df1\uff0c\u8fd9\u6837\u5c31\u4f1a\u51fa\u73b0\u65e0\u9650\u9012\u5f52\u7684\u60c5\u51b5\u3002\u5bfc\u81f4\u63a5\u53e3\u4e00\u76f4\u4e0d\u80fd\u8fd4\u56de\u6570\u636e\uff0c\u6700\u7ec8\u4f1a\u53d1\u751f\u5806\u6808\u6ea2\u51fa\u3002<\/p>\n
    \n
    \u5efa\u8bae\u5199\u9012\u5f52\u65b9\u6cd5\u65f6\uff0c\u8bbe\u5b9a\u4e00\u4e2a\u9012\u5f52\u7684\u6df1\u5ea6\uff0c\u6bd4\u5982\uff1a\u5206\u7c7b\u6700\u5927\u7b49\u7ea7\u67094\u7ea7\uff0c\u5219\u6df1\u5ea6\u53ef\u4ee5\u8bbe\u7f6e\u4e3a4\u3002\u7136\u540e\u5728\u9012\u5f52\u65b9\u6cd5\u4e2d\u505a\u5224\u65ad\uff0c\u5982\u679c\u6df1\u5ea6\u5927\u4e8e4\u65f6\uff0c\u5219\u81ea\u52a8\u8fd4\u56de\uff0c\u8fd9\u6837\u5c31\u80fd\u907f\u514d\u65e0\u9650\u5faa\u73af\u7684\u60c5\u51b5\u3002<\/p>\n<\/blockquote>\n
    5. \u5f02\u6b65\u5904\u7406<\/span><\/h2>\n
    \u6709\u65f6\u5019\uff0c\u6211\u4eec\u63a5\u53e3\u6027\u80fd\u4f18\u5316\uff0c\u9700\u8981\u91cd\u65b0\u68b3\u7406\u4e00\u4e0b\u4e1a\u52a1\u903b\u8f91\uff0c\u770b\u770b\u662f\u5426\u6709\u8bbe\u8ba1\u4e0a\u4e0d\u592a\u5408\u7406\u7684\u5730\u65b9\u3002<\/p>\n
    \u6bd4\u5982\u6709\u4e2a\u7528\u6237\u8bf7\u6c42\u63a5\u53e3\u4e2d\uff0c\u9700\u8981\u505a\u4e1a\u52a1\u64cd\u4f5c\uff0c\u53d1\u7ad9\u5185\u901a\u77e5\uff0c\u548c\u8bb0\u5f55\u64cd\u4f5c\u65e5\u5fd7\u3002\u4e3a\u4e86\u5b9e\u73b0\u8d77\u6765\u6bd4\u8f83\u65b9\u4fbf\uff0c\u901a\u5e38\u6211\u4eec\u4f1a\u5c06\u8fd9\u4e9b\u903b\u8f91\u653e\u5728\u63a5\u53e3\u4e2d\u540c\u6b65\u6267\u884c\uff0c\u52bf\u5fc5\u4f1a\u5bf9\u63a5\u53e3\u6027\u80fd\u9020\u6210\u4e00\u5b9a\u7684\u5f71\u54cd\u3002<\/p>\n
    \u63a5\u53e3\u5185\u90e8\u6d41\u7a0b\u56fe\u5982\u4e0b\uff1a
    <\/div>\u8fd9\u4e2a\u63a5\u53e3\u8868\u9762\u4e0a\u770b\u8d77\u6765\u6ca1\u6709\u95ee\u9898\uff0c\u4f46\u5982\u679c\u4f60\u4ed4\u7ec6\u68b3\u7406\u4e00\u4e0b\u4e1a\u52a1\u903b\u8f91\uff0c\u4f1a\u53d1\u73b0\u53ea\u6709\u4e1a\u52a1\u64cd\u4f5c\u624d\u662f\u6838\u5fc3\u903b\u8f91<\/code>\uff0c\u5176\u4ed6\u7684\u529f\u80fd\u90fd\u662f\u975e\u6838\u5fc3\u903b\u8f91<\/code>\u3002<\/p>\n
    \n
    \u5728\u8fd9\u91cc\u6709\u4e2a\u539f\u5219\u5c31\u662f\uff1a\u6838\u5fc3\u903b\u8f91\u53ef\u4ee5\u540c\u6b65\u6267\u884c\uff0c\u540c\u6b65\u5199\u5e93\u3002\u975e\u6838\u5fc3\u903b\u8f91\uff0c\u53ef\u4ee5\u5f02\u6b65\u6267\u884c\uff0c\u5f02\u6b65\u5199\u5e93\u3002<\/p>\n<\/blockquote>\n
    \u4e0a\u9762\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u53d1\u7ad9\u5185\u901a\u77e5\u548c\u7528\u6237\u64cd\u4f5c\u65e5\u5fd7\u529f\u80fd\uff0c\u5bf9\u5b9e\u65f6\u6027\u8981\u6c42\u4e0d\u9ad8\uff0c\u5373\u4f7f\u665a\u70b9\u5199\u5e93\uff0c\u7528\u6237\u65e0\u975e\u662f\u665a\u70b9\u6536\u5230\u7ad9\u5185\u901a\u77e5\uff0c\u6216\u8005\u8fd0\u8425\u665a\u70b9\u770b\u5230\u7528\u6237\u64cd\u4f5c\u65e5\u5fd7\uff0c\u5bf9\u4e1a\u52a1\u5f71\u54cd\u4e0d\u5927\uff0c\u6240\u4ee5\u5b8c\u5168\u53ef\u4ee5\u5f02\u6b65\u5904\u7406\u3002<\/p>\n
    \u901a\u5e38\u5f02\u6b65\u4e3b\u8981\u6709\u4e24\u79cd\uff1a\u591a\u7ebf\u7a0b<\/code> \u548c mq<\/code>\u3002<\/p>\n
    5.1 \u7ebf\u7a0b\u6c60<\/span><\/h3>\n
    \u4f7f\u7528\u7ebf\u7a0b\u6c60<\/code>\u6539\u9020\u4e4b\u540e\uff0c\u63a5\u53e3\u903b\u8f91\u5982\u4e0b\uff1a
    <\/div>\u53d1\u7ad9\u5185\u901a\u77e5\u548c\u7528\u6237\u64cd\u4f5c\u65e5\u5fd7\u529f\u80fd\uff0c\u88ab\u63d0\u4ea4\u5230\u4e86\u4e24\u4e2a\u5355\u72ec\u7684\u7ebf\u7a0b\u6c60\u4e2d\u3002<\/p>\n
    \u8fd9\u6837\u63a5\u53e3\u4e2d\u91cd\u70b9\u5173\u6ce8\u7684\u662f\u4e1a\u52a1\u64cd\u4f5c\uff0c\u628a\u5176\u4ed6\u7684\u903b\u8f91\u4ea4\u7ed9\u7ebf\u7a0b\u5f02\u6b65\u6267\u884c\uff0c\u8fd9\u6837\u6539\u9020\u4e4b\u540e\uff0c\u8ba9\u63a5\u53e3\u6027\u80fd\u77ac\u95f4\u63d0\u5347\u4e86\u3002<\/p>\n
    \u4f46\u4f7f\u7528\u7ebf\u7a0b\u6c60\u6709\u4e2a\u5c0f\u95ee\u9898\u5c31\u662f\uff1a\u5982\u679c\u670d\u52a1\u5668\u91cd\u542f\u4e86\uff0c\u6216\u8005\u662f\u9700\u8981\u88ab\u6267\u884c\u7684\u529f\u80fd\u51fa\u73b0\u5f02\u5e38\u4e86\uff0c\u65e0\u6cd5\u91cd\u8bd5\uff0c\u4f1a\u4e22\u6570\u636e\u3002<\/p>\n
    \u90a3\u4e48\u8fd9\u4e2a\u95ee\u9898\u8be5\u600e\u4e48\u529e\u5462\uff1f<\/p>\n
    5.2 mq<\/span><\/h3>\n
    \u4f7f\u7528mq<\/code>\u6539\u9020\u4e4b\u540e\uff0c\u63a5\u53e3\u903b\u8f91\u5982\u4e0b\uff1a
    <\/div>\u5bf9\u4e8e\u53d1\u7ad9\u5185\u901a\u77e5\u548c\u7528\u6237\u64cd\u4f5c\u65e5\u5fd7\u529f\u80fd\uff0c\u5728\u63a5\u53e3\u4e2d\u5e76\u6ca1\u771f\u6b63\u5b9e\u73b0\uff0c\u5b83\u53ea\u53d1\u9001\u4e86mq\u6d88\u606f\u5230mq\u670d\u52a1\u5668\u3002\u7136\u540e\u7531mq\u6d88\u8d39\u8005\u6d88\u8d39\u6d88\u606f\u65f6\uff0c\u624d\u771f\u6b63\u7684\u6267\u884c\u8fd9\u4e24\u4e2a\u529f\u80fd\u3002<\/p>\n
    \u8fd9\u6837\u6539\u9020\u4e4b\u540e\uff0c\u63a5\u53e3\u6027\u80fd\u540c\u6837\u63d0\u5347\u4e86\uff0c\u56e0\u4e3a\u53d1\u9001mq\u6d88\u606f\u901f\u5ea6\u662f\u5f88\u5feb\u7684\uff0c\u6211\u4eec\u53ea\u9700\u5173\u6ce8\u4e1a\u52a1\u64cd\u4f5c\u7684\u4ee3\u7801\u5373\u53ef\u3002<\/p>\n
    6. \u907f\u514d\u5927\u4e8b\u52a1<\/span><\/h2>\n
    \u5f88\u591a\u5c0f\u4f19\u4f34\u5728\u4f7f\u7528spring\u6846\u67b6\u5f00\u53d1\u9879\u76ee\u65f6\uff0c\u4e3a\u4e86\u65b9\u4fbf\uff0c\u559c\u6b22\u4f7f\u7528@Transactional<\/code>\u6ce8\u89e3\u63d0\u4f9b\u4e8b\u52a1\u529f\u80fd\u3002<\/p>\n
    \u6ca1\u9519\uff0c\u4f7f\u7528@Transactional\u6ce8\u89e3\u8fd9\u79cd\u58f0\u660e\u5f0f\u4e8b\u52a1\u7684\u65b9\u5f0f\u63d0\u4f9b\u4e8b\u52a1\u529f\u80fd\uff0c\u786e\u5b9e\u80fd\u5c11\u5199\u5f88\u591a\u4ee3\u7801\uff0c\u63d0\u5347\u5f00\u53d1\u6548\u7387\u3002<\/p>\n
    \u4f46\u4e5f\u5bb9\u6613\u9020\u6210\u5927\u4e8b\u52a1\uff0c\u5f15\u53d1\u5176\u4ed6\u7684\u95ee\u9898\u3002<\/p>\n
    \u4e0b\u9762\u7528\u4e00\u5f20\u56fe\u770b\u770b\u5927\u4e8b\u52a1\u5f15\u53d1\u7684\u95ee\u9898\u3002
    <\/div>\u4ece\u56fe\u4e2d\u80fd\u591f\u770b\u51fa\uff0c\u5927\u4e8b\u52a1\u95ee\u9898\u53ef\u80fd\u4f1a\u9020\u6210\u63a5\u53e3\u8d85\u65f6\uff0c\u5bf9\u63a5\u53e3\u7684\u6027\u80fd\u6709\u76f4\u63a5\u7684\u5f71\u54cd\u3002<\/p>\n
    \u6211\u4eec\u8be5\u5982\u4f55\u4f18\u5316\u5927\u4e8b\u52a1\u5462\uff1f<\/p>\n
      \n
    1. \n
      \u5c11\u7528@Transactional\u6ce8\u89e3<\/section>\n<\/li>\n
    2. \n
      \u5c06\u67e5\u8be2(select)\u65b9\u6cd5\u653e\u5230\u4e8b\u52a1\u5916<\/section>\n<\/li>\n
    3. \n
      \u4e8b\u52a1\u4e2d\u907f\u514d\u8fdc\u7a0b\u8c03\u7528<\/section>\n<\/li>\n
    4. \n
      \u4e8b\u52a1\u4e2d\u907f\u514d\u4e00\u6b21\u6027\u5904\u7406\u592a\u591a\u6570\u636e<\/section>\n<\/li>\n
    5. \n
      \u6709\u4e9b\u529f\u80fd\u53ef\u4ee5\u975e\u4e8b\u52a1\u6267\u884c<\/section>\n<\/li>\n
    6. \n
      \u6709\u4e9b\u529f\u80fd\u53ef\u4ee5\u5f02\u6b65\u5904\u7406<\/section>\n<\/li>\n<\/ol>\n
      \u5173\u4e8e\u5927\u4e8b\u52a1\u95ee\u9898\u6211\u7684\u53e6\u4e00\u7bc7\u6587\u7ae0\u300a\u300b\uff0c\u5b83\u91cc\u9762\u505a\u4e86\u975e\u5e38\u8be6\u7ec6\u7684\u4ecb\u7ecd\uff0c\u5982\u679c\u5927\u5bb6\u611f\u5174\u8da3\u53ef\u4ee5\u770b\u770b\u3002<\/p>\n
      7. \u9501\u7c92\u5ea6<\/span><\/h2>\n
      \u5728\u67d0\u4e9b\u4e1a\u52a1\u573a\u666f\u4e2d\uff0c\u4e3a\u4e86\u9632\u6b62\u591a\u4e2a\u7ebf\u7a0b\u5e76\u53d1\u4fee\u6539\u67d0\u4e2a\u5171\u4eab\u6570\u636e\uff0c\u9020\u6210\u6570\u636e\u5f02\u5e38\u3002<\/p>\n
      \u4e3a\u4e86\u89e3\u51b3\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u4fee\u6539\u6570\u636e\uff0c\u9020\u6210\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4f1a\uff1a\u52a0\u9501<\/code>\u3002<\/p>\n
      \u4f46\u5982\u679c\u9501\u52a0\u5f97\u4e0d\u597d\uff0c\u5bfc\u81f4\u9501\u7684\u7c92\u5ea6\u592a\u7c97\uff0c\u4e5f\u4f1a\u975e\u5e38\u5f71\u54cd\u63a5\u53e3\u6027\u80fd\u3002<\/p>\n
      7.1 synchronized<\/span><\/h3>\n
      \u5728java\u4e2d\u63d0\u4f9b\u4e86synchronized<\/code>\u5173\u952e\u5b57\u7ed9\u6211\u4eec\u7684\u4ee3\u7801\u52a0\u9501\u3002<\/p>\n
      \u901a\u5e38\u6709\u4e24\u79cd\u5199\u6cd5\uff1a\u5728\u65b9\u6cd5\u4e0a\u52a0\u9501<\/code> \u548c \u5728\u4ee3\u7801\u5757\u4e0a\u52a0\u9501<\/code>\u3002<\/p>\n
      \u5148\u770b\u770b\u5982\u4f55\u5728\u65b9\u6cd5\u4e0a\u52a0\u9501\uff1a<\/p>\n
      public<\/span>\u00a0synchronized<\/span>\u00a0doSave<\/span>(String\u00a0fileUrl)<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0\u00a0mkdir();\r\n\u00a0\u00a0\u00a0\u00a0uploadFile(fileUrl);\r\n\u00a0\u00a0\u00a0\u00a0sendMessage(fileUrl);\r\n}\r\n<\/code><\/pre>\n
      \u8fd9\u91cc\u52a0\u9501\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u9632\u6b62\u5e76\u53d1\u7684\u60c5\u51b5\u4e0b\uff0c\u521b\u5efa\u4e86\u76f8\u540c\u7684\u76ee\u5f55\uff0c\u7b2c\u4e8c\u6b21\u4f1a\u521b\u5efa\u5931\u8d25\uff0c\u5f71\u54cd\u4e1a\u52a1\u529f\u80fd\u3002<\/p>\n
      \u4f46\u8fd9\u79cd\u76f4\u63a5\u5728\u65b9\u6cd5\u4e0a\u52a0\u9501\uff0c\u9501\u7684\u7c92\u5ea6\u6709\u70b9\u7c97\u3002\u56e0\u4e3adoSave\u65b9\u6cd5\u4e2d\u7684\u4e0a\u4f20\u6587\u4ef6\u548c\u53d1\u6d88\u606f\u65b9\u6cd5\uff0c\u662f\u4e0d\u9700\u8981\u52a0\u9501\u7684\u3002\u53ea\u6709\u521b\u5efa\u76ee\u5f55\u65b9\u6cd5\uff0c\u624d\u9700\u8981\u52a0\u9501\u3002<\/p>\n
      \u6211\u4eec\u90fd\u77e5\u9053\u6587\u4ef6\u4e0a\u4f20\u64cd\u4f5c\u662f\u975e\u5e38\u8017\u65f6\u7684\uff0c\u5982\u679c\u5c06\u6574\u4e2a\u65b9\u6cd5\u52a0\u9501\uff0c\u90a3\u4e48\u9700\u8981\u7b49\u5230\u6574\u4e2a\u65b9\u6cd5\u6267\u884c\u5b8c\u4e4b\u540e\u624d\u80fd\u91ca\u653e\u9501\u3002\u663e\u7136\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u8be5\u65b9\u6cd5\u7684\u6027\u80fd\u5f88\u5dee\uff0c\u53d8\u5f97\u5f97\u4e0d\u507f\u5931\u3002<\/p>\n
      \u8fd9\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u6539\u6210\u5728\u4ee3\u7801\u5757\u4e0a\u52a0\u9501\u4e86\uff0c\u5177\u4f53\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
      public<\/span>\u00a0void<\/span>\u00a0doSave<\/span>(String\u00a0path,String\u00a0fileUrl)<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0\u00a0synchronized<\/span>(this<\/span>)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>(!exists(path))\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mkdir(path);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0uploadFile(fileUrl);\r\n\u00a0\u00a0\u00a0\u00a0sendMessage(fileUrl);\r\n}\r\n<\/code><\/pre>\n
      \u8fd9\u6837\u6539\u9020\u4e4b\u540e\uff0c\u9501\u7684\u7c92\u5ea6\u4e00\u4e0b\u5b50\u53d8\u5c0f\u4e86\uff0c\u53ea\u6709\u5e76\u53d1\u521b\u5efa\u76ee\u5f55\u529f\u80fd\u624d\u52a0\u4e86\u9501\u3002\u800c\u521b\u5efa\u76ee\u5f55\u662f\u4e00\u4e2a\u975e\u5e38\u5feb\u7684\u64cd\u4f5c\uff0c\u5373\u4f7f\u52a0\u9501\u5bf9\u63a5\u53e3\u7684\u6027\u80fd\u5f71\u54cd\u4e5f\u4e0d\u5927\u3002<\/p>\n
      \u6700\u91cd\u8981\u7684\u662f\uff0c\u5176\u4ed6\u7684\u4e0a\u4f20\u6587\u4ef6\u548c\u53d1\u9001\u6d88\u606f\u529f\u80fd\uff0c\u4efb\u7136\u53ef\u4ee5\u5e76\u53d1\u6267\u884c\u3002<\/p>\n
      \u5f53\u7136\uff0c\u8fd9\u79cd\u505a\u5728\u5355\u673a\u7248\u7684\u670d\u52a1\u4e2d\uff0c\u662f\u6ca1\u6709\u95ee\u9898\u7684\u3002\u4f46\u73b0\u5728\u90e8\u7f72\u7684\u751f\u4ea7\u73af\u5883\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u670d\u52a1\u7684\u7a33\u5b9a\u6027\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u540c\u4e00\u4e2a\u670d\u52a1\u4f1a\u88ab\u90e8\u7f72\u5728\u591a\u4e2a\u8282\u70b9\u4e2d\u3002\u5982\u679c\u54ea\u5929\u6302\u4e86\u4e00\u4e2a\u8282\u70b9\uff0c\u5176\u4ed6\u7684\u8282\u70b9\u670d\u52a1\u4efb\u7136\u53ef\u7528\u3002<\/p>\n
      \u591a\u8282\u70b9\u90e8\u7f72\u907f\u514d\u4e86\u56e0\u4e3a\u67d0\u4e2a\u8282\u70b9\u6302\u4e86\uff0c\u5bfc\u81f4\u670d\u52a1\u4e0d\u53ef\u7528\u7684\u60c5\u51b5\u3002\u540c\u65f6\u4e5f\u80fd\u5206\u644a\u6574\u4e2a\u7cfb\u7edf\u7684\u6d41\u91cf\uff0c\u907f\u514d\u7cfb\u7edf\u538b\u529b\u8fc7\u5927\u3002<\/p>\n
      \u540c\u65f6\u5b83\u4e5f\u5e26\u6765\u4e86\u65b0\u7684\u95ee\u9898\uff1asynchronized\u53ea\u80fd\u4fdd\u8bc1\u4e00\u4e2a\u8282\u70b9\u52a0\u9501\u662f\u6709\u6548\u7684\uff0c\u4f46\u5982\u679c\u6709\u591a\u4e2a\u8282\u70b9\u5982\u4f55\u52a0\u9501\u5462?<\/p>\n
      \u7b54\uff1a\u8fd9\u5c31\u9700\u8981\u4f7f\u7528\uff1a\u5206\u5e03\u5f0f\u9501<\/code>\u4e86\u3002\u76ee\u524d\u4e3b\u6d41\u7684\u5206\u5e03\u5f0f\u9501\u5305\u62ec\uff1aredis\u5206\u5e03\u5f0f\u9501\u3001zookeeper\u5206\u5e03\u5f0f\u9501 \u548c \u6570\u636e\u5e93\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n
      \u7531\u4e8ezookeeper\u5206\u5e03\u5f0f\u9501\u7684\u6027\u80fd\u4e0d\u592a\u597d\uff0c\u771f\u5b9e\u4e1a\u52a1\u573a\u666f\u7528\u7684\u4e0d\u591a\uff0c\u8fd9\u91cc\u5148\u4e0d\u8bb2\u3002<\/p>\n
      \u4e0b\u9762\u804a\u4e00\u4e0bredis\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n
      7.2 redis\u5206\u5e03\u5f0f\u9501<\/span><\/h3>\n
      \u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u7531\u4e8eredis\u5206\u5e03\u5f0f\u9501\u76f8\u5bf9\u4e8e\u66f4\u7b80\u5355\u548c\u9ad8\u6548\uff0c\u6210\u4e3a\u4e86\u5206\u5e03\u5f0f\u9501\u7684\u9996\u5148\uff0c\u88ab\u6211\u4eec\u7528\u5230\u4e86\u5f88\u591a\u5b9e\u9645\u4e1a\u52a1\u573a\u666f\u5f53\u4e2d\u3002<\/p>\n
      \u4f7f\u7528redis\u5206\u5e03\u5f0f\u9501\u7684\u4f2a\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
      public<\/span>\u00a0void<\/span>\u00a0doSave<\/span>(String\u00a0path,String\u00a0fileUrl)<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0try<\/span>\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0String\u00a0result\u00a0=\u00a0jedis.set(lockKey,\u00a0requestId,\u00a0\"NX\"<\/span>,\u00a0\"PX\"<\/span>,\u00a0expireTime);\r\n\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(\"OK\"<\/span>.equals(result))\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>(!exists(path))\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mkdir(path);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0uploadFile(fileUrl);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sendMessage(fileUrl);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0true<\/span>;\r\n\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0}\u00a0finally<\/span>{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0unlock(lockKey,requestId);\r\n\u00a0\u00a0}\u00a0\u00a0\r\n\u00a0\u00a0return<\/span>\u00a0false<\/span>;\r\n}\r\n<\/code><\/pre>\n
      \u8ddf\u4e4b\u524d\u4f7f\u7528synchronized<\/code>\u5173\u952e\u5b57\u52a0\u9501\u65f6\u4e00\u6837\uff0c\u8fd9\u91cc\u9501\u7684\u8303\u56f4\u4e5f\u592a\u5927\u4e86\uff0c\u6362\u53e5\u8bdd\u8bf4\u5c31\u662f\u9501\u7684\u7c92\u5ea6\u592a\u7c97\uff0c\u8fd9\u6837\u4f1a\u5bfc\u81f4\u6574\u4e2a\u65b9\u6cd5\u7684\u6267\u884c\u6548\u7387\u5f88\u4f4e\u3002<\/p>\n
      \u5176\u5b9e\u53ea\u6709\u521b\u5efa\u76ee\u5f55\u7684\u65f6\u5019\uff0c\u624d\u9700\u8981\u52a0\u5206\u5e03\u5f0f\u9501\uff0c\u5176\u4f59\u4ee3\u7801\u6839\u672c\u4e0d\u7528\u52a0\u9501\u3002<\/p>\n
      \u4e8e\u662f\uff0c\u6211\u4eec\u9700\u8981\u4f18\u5316\u4e00\u4e0b\u4ee3\u7801\uff1a<\/p>\n
      public<\/span>\u00a0void<\/span>\u00a0doSave<\/span>(String\u00a0path,String\u00a0fileUrl)<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0if<\/span>(this<\/span>.tryLock())\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mkdir(path);\r\n\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0uploadFile(fileUrl);\r\n\u00a0\u00a0\u00a0sendMessage(fileUrl);\r\n}<\/code><\/pre>\n
      private<\/span>\u00a0boolean<\/span>\u00a0tryLock<\/span>()<\/span>\u00a0<\/span>{
      \ntry<\/span>\u00a0{
      \nString\u00a0result\u00a0=\u00a0jedis.set(lockKey,\u00a0requestId,\u00a0“NX”<\/span>,\u00a0“PX”<\/span>,\u00a0expireTime);
      \nif<\/span>\u00a0(“OK”<\/span>.equals(result))\u00a0{
      \nreturn<\/span>\u00a0true<\/span>;
      \n}
      \n}\u00a0finally<\/span>{
      \nunlock(lockKey,requestId);
      \n}
      \nreturn<\/span>\u00a0false<\/span>;
      \n}<\/p>\n
      <\/code><\/pre>\n
      \u4e0a\u9762\u4ee3\u7801\u5c06\u52a0\u9501\u7684\u8303\u56f4\u7f29\u5c0f\u4e86\uff0c\u53ea\u6709\u521b\u5efa\u76ee\u5f55\u65f6\u624d\u52a0\u4e86\u9501\u3002\u8fd9\u6837\u770b\u4f3c\u7b80\u5355\u7684\u4f18\u5316\u4e4b\u540e\uff0c\u63a5\u53e3\u6027\u80fd\u80fd\u63d0\u5347\u5f88\u591a\u3002\u8bf4\u4e0d\u5b9a\uff0c\u4f1a\u6709\u610f\u5916\u7684\u60ca\u559c\u5594\u3002\u54c8\u54c8\u54c8\u3002<\/p>\n
      redis\u5206\u5e03\u5f0f\u9501\u867d\u8bf4\u597d\u7528\uff0c\u4f46\u5b83\u5728\u4f7f\u7528\u65f6\uff0c\u6709\u5f88\u591a\u6ce8\u610f\u7684\u7ec6\u8282\uff0c\u9690\u85cf\u4e86\u5f88\u591a\u5751\uff0c\u5982\u679c\u7a0d\u4e0d\u6ce8\u610f\u5f88\u5bb9\u6613\u8e29\u4e2d\u3002\u8be6\u7ec6\u5185\u5bb9\u53ef\u4ee5\u770b\u770b\u6211\u7684\u53e6\u4e00\u7bc7\u6587\u7ae0\u300a\u300b<\/p>\n
      7.3 \u6570\u636e\u5e93\u5206\u5e03\u5f0f\u9501<\/span><\/h3>\n
      mysql\u6570\u636e\u5e93\u4e2d\u4e3b\u8981\u6709\u4e09\u79cd\u9501\uff1a<\/p>\n
        \n
      • \n
        \u8868\u9501\uff1a\u52a0\u9501\u5feb\uff0c\u4e0d\u4f1a\u51fa\u73b0\u6b7b\u9501\u3002\u4f46\u9501\u5b9a\u7c92\u5ea6\u5927\uff0c\u53d1\u751f\u9501\u51b2\u7a81\u7684\u6982\u7387\u6700\u9ad8\uff0c\u5e76\u53d1\u5ea6\u6700\u4f4e\u3002<\/section>\n<\/li>\n
      • \n
        \u884c\u9501\uff1a\u52a0\u9501\u6162\uff0c\u4f1a\u51fa\u73b0\u6b7b\u9501\u3002\u4f46\u9501\u5b9a\u7c92\u5ea6\u6700\u5c0f\uff0c\u53d1\u751f\u9501\u51b2\u7a81\u7684\u6982\u7387\u6700\u4f4e\uff0c\u5e76\u53d1\u5ea6\u4e5f\u6700\u9ad8\u3002<\/section>\n<\/li>\n
      • \n
        \u95f4\u9699\u9501\uff1a\u5f00\u9500\u548c\u52a0\u9501\u65f6\u95f4\u754c\u4e8e\u8868\u9501\u548c\u884c\u9501\u4e4b\u95f4\u3002\u5b83\u4f1a\u51fa\u73b0\u6b7b\u9501\uff0c\u9501\u5b9a\u7c92\u5ea6\u754c\u4e8e\u8868\u9501\u548c\u884c\u9501\u4e4b\u95f4\uff0c\u5e76\u53d1\u5ea6\u4e00\u822c\u3002<\/section>\n<\/li>\n<\/ul>\n
        \u5e76\u53d1\u5ea6\u8d8a\u9ad8\uff0c\u610f\u5473\u7740\u63a5\u53e3\u6027\u80fd\u8d8a\u597d\u3002<\/p>\n
        \u6240\u4ee5\u6570\u636e\u5e93\u9501\u7684\u4f18\u5316\u65b9\u5411\u662f\uff1a<\/p>\n
        \u4f18\u5148\u4f7f\u7528\u884c\u9501<\/code>\uff0c\u5176\u6b21\u4f7f\u7528\u95f4\u9699\u9501<\/code>\uff0c\u518d\u5176\u6b21\u4f7f\u7528\u8868\u9501<\/code>\u3002<\/p>\n
        \u8d76\u7d27\u770b\u770b\uff0c\u4f60\u7528\u5bf9\u4e86\u6ca1\uff1f<\/p>\n
        8.\u5206\u9875\u5904\u7406<\/span><\/h2>\n
        \u6709\u65f6\u5019\u6211\u4f1a\u8c03\u7528\u67d0\u4e2a\u63a5\u53e3\u6279\u91cf\u67e5\u8be2\u6570\u636e\uff0c\u6bd4\u5982\uff1a\u901a\u8fc7\u7528\u6237id\u6279\u91cf\u67e5\u8be2\u51fa\u7528\u6237\u4fe1\u606f\uff0c\u7136\u540e\u7ed9\u8fd9\u4e9b\u7528\u6237\u9001\u79ef\u5206\u3002<\/p>\n
        \u4f46\u5982\u679c\u4f60\u4e00\u6b21\u6027\u67e5\u8be2\u7684\u7528\u6237\u6570\u91cf\u592a\u591a\u4e86\uff0c\u6bd4\u5982\u4e00\u6b21\u67e5\u8be22000\u4e2a\u7528\u6237\u7684\u6570\u636e\u3002\u53c2\u6570\u4e2d\u4f20\u5165\u4e862000\u4e2a\u7528\u6237\u7684id\uff0c\u8fdc\u7a0b\u8c03\u7528\u63a5\u53e3\uff0c\u4f1a\u53d1\u73b0\u8be5\u7528\u6237\u67e5\u8be2\u63a5\u53e3\u7ecf\u5e38\u8d85\u65f6\u3002<\/p>\n
        \u8c03\u7528\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
        List<User>\u00a0users\u00a0=\u00a0remoteCallUser(ids);\r\n<\/code><\/pre>\n
        \u4f17\u6240\u5468\u77e5\uff0c\u8c03\u7528\u63a5\u53e3\u4ece\u6570\u636e\u5e93\u83b7\u53d6\u6570\u636e\uff0c\u662f\u9700\u8981\u7ecf\u8fc7\u7f51\u7edc\u4f20\u8f93\u7684\u3002\u5982\u679c\u6570\u636e\u91cf\u592a\u5927\uff0c\u65e0\u8bba\u662f\u83b7\u53d6\u6570\u636e\u7684\u901f\u5ea6\uff0c\u8fd8\u662f\u7f51\u7edc\u4f20\u8f93\u53d7\u9650\u4e8e\u5e26\u5bbd\uff0c\u90fd\u4f1a\u5bfc\u81f4\u8017\u65f6\u65f6\u95f4\u6bd4\u8f83\u957f\u3002<\/p>\n
        \u90a3\u4e48\uff0c\u8fd9\u79cd\u60c5\u51b5\u8981\u5982\u4f55\u4f18\u5316\u5462\uff1f<\/p>\n
        \u7b54\uff1a\u5206\u9875\u5904\u7406<\/code>\u3002<\/p>\n
        \u5c06\u4e00\u6b21\u83b7\u53d6\u6240\u6709\u7684\u6570\u636e\u7684\u8bf7\u6c42\uff0c\u6539\u6210\u5206\u591a\u6b21\u83b7\u53d6\uff0c\u6bcf\u6b21\u53ea\u83b7\u53d6\u4e00\u90e8\u5206\u7528\u6237\u7684\u6570\u636e\uff0c\u6700\u540e\u8fdb\u884c\u5408\u5e76\u548c\u6c47\u603b\u3002<\/p>\n
        \u5176\u5b9e\uff0c\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\uff0c\u8981\u5206\u4e3a\u4e24\u79cd\u573a\u666f\uff1a\u540c\u6b65\u8c03\u7528<\/code> \u548c \u5f02\u6b65\u8c03\u7528<\/code>\u3002<\/p>\n
        8.1 \u540c\u6b65\u8c03\u7528<\/span><\/h3>\n
        \u5982\u679c\u5728job<\/code>\u4e2d\u9700\u8981\u83b7\u53d62000\u4e2a\u7528\u6237\u7684\u4fe1\u606f\uff0c\u5b83\u8981\u6c42\u53ea\u8981\u80fd\u6b63\u786e\u83b7\u53d6\u5230\u6570\u636e\u5c31\u597d\uff0c\u5bf9\u83b7\u53d6\u6570\u636e\u7684\u603b\u8017\u65f6\u8981\u6c42\u4e0d\u592a\u9ad8\u3002<\/p>\n
        \u4f46\u5bf9\u6bcf\u4e00\u6b21\u8fdc\u7a0b\u63a5\u53e3\u8c03\u7528\u7684\u8017\u65f6\u6709\u8981\u6c42\uff0c\u4e0d\u80fd\u5927\u4e8e500ms\uff0c\u4e0d\u7136\u4f1a\u6709\u90ae\u4ef6\u9884\u8b66\u3002<\/p>\n
        \u8fd9\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u540c\u6b65\u5206\u9875\u8c03\u7528\u6279\u91cf\u67e5\u8be2\u7528\u6237\u4fe1\u606f\u63a5\u53e3\u3002<\/p>\n
        \u5177\u4f53\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
        List<List<Long>>\u00a0allIds\u00a0=\u00a0Lists.partition(ids,200<\/span>);<\/code><\/pre>\n
        for<\/span>(List<Long>\u00a0batchIds:allIds)\u00a0{
        \nList<User>\u00a0users\u00a0=\u00a0remoteCallUser(batchIds);
        \n}<\/p>\n
        <\/code><\/pre>\n
        \u4ee3\u7801\u4e2d\u6211\u7528\u7684google<\/code>\u7684guava<\/code>\u5de5\u5177\u4e2d\u7684Lists.partition<\/code>\u65b9\u6cd5\uff0c\u7528\u5b83\u6765\u505a\u5206\u9875\u7b80\u76f4\u592a\u597d\u7528\u4e86\uff0c\u4e0d\u7136\u8981\u5df4\u62c9\u5df4\u62c9\u5199\u4e00\u5927\u5806\u5206\u9875\u7684\u4ee3\u7801\u3002<\/p>\n
        8.2 \u5f02\u6b65\u8c03\u7528<\/span><\/h3>\n
        \u5982\u679c\u662f\u5728\u67d0\u4e2a\u63a5\u53e3<\/code>\u4e2d\u9700\u8981\u83b7\u53d62000\u4e2a\u7528\u6237\u7684\u4fe1\u606f\uff0c\u5b83\u8003\u8651\u7684\u5c31\u9700\u8981\u66f4\u591a\u4e00\u4e9b\u3002<\/p>\n
        \u9664\u4e86\u9700\u8981\u8003\u8651\u8fdc\u7a0b\u8c03\u7528\u63a5\u53e3\u7684\u8017\u65f6\u4e4b\u5916\uff0c\u8fd8\u9700\u8981\u8003\u8651\u8be5\u63a5\u53e3\u672c\u8eab\u7684\u603b\u8017\u65f6\uff0c\u4e5f\u4e0d\u80fd\u8d85\u65f6500ms\u3002<\/p>\n
        \u8fd9\u65f6\u5019\u7528\u4e0a\u9762\u7684\u540c\u6b65\u5206\u9875\u8bf7\u6c42\u8fdc\u7a0b\u63a5\u53e3\uff0c\u80af\u5b9a\u662f\u884c\u4e0d\u901a\u7684\u3002<\/p>\n
        \u90a3\u4e48\uff0c\u53ea\u80fd\u4f7f\u7528\u5f02\u6b65\u8c03\u7528<\/code>\u4e86\u3002<\/p>\n
        \u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
        List<List<Long>>\u00a0allIds\u00a0=\u00a0Lists.partition(ids,200<\/span>);<\/code><\/pre>\n
        final<\/span>\u00a0List<User>\u00a0result\u00a0=\u00a0Lists.newArrayList();
        \nallIds.stream().forEach((batchIds)\u00a0->\u00a0{
        \nCompletableFuture.supplyAsync(()\u00a0->\u00a0{
        \nresult.addAll(remoteCallUser(batchIds));
        \nreturn<\/span>\u00a0Boolean.TRUE;
        \n},\u00a0executor);
        \n})<\/p>\n
        <\/code><\/pre>\n
        \u4f7f\u7528CompletableFuture\u7c7b\uff0c\u591a\u4e2a\u7ebf\u7a0b\u5f02\u6b65\u8c03\u7528\u8fdc\u7a0b\u63a5\u53e3\uff0c\u6700\u540e\u6c47\u603b\u7ed3\u679c\u7edf\u4e00\u8fd4\u56de\u3002<\/p>\n
        9.\u52a0\u7f13\u5b58<\/span><\/h2>\n
        \u89e3\u51b3\u63a5\u53e3\u6027\u80fd\u95ee\u9898\uff0c\u52a0\u7f13\u5b58<\/code>\u662f\u4e00\u4e2a\u975e\u5e38\u9ad8\u6548\u7684\u65b9\u6cd5\u3002<\/p>\n
        \u4f46\u4e0d\u80fd\u4e3a\u4e86\u7f13\u5b58\u800c\u7f13\u5b58\uff0c\u8fd8\u662f\u8981\u770b\u5177\u4f53\u7684\u4e1a\u52a1\u573a\u666f\u3002\u6bd5\u7adf\u52a0\u4e86\u7f13\u5b58\uff0c\u4f1a\u5bfc\u81f4\u63a5\u53e3\u7684\u590d\u6742\u5ea6\u589e\u52a0\uff0c\u5b83\u4f1a\u5e26\u6765\u6570\u636e\u4e0d\u4e00\u81f4\u95ee\u9898\u3002<\/p>\n
        \u5728\u6709\u4e9b\u5e76\u53d1\u91cf\u6bd4\u8f83\u4f4e\u7684\u573a\u666f\u4e2d\uff0c\u6bd4\u5982\u7528\u6237\u4e0b\u5355\uff0c\u53ef\u4ee5\u4e0d\u7528\u52a0\u7f13\u5b58\u3002<\/p>\n
        \u8fd8\u6709\u4e9b\u573a\u666f\uff0c\u6bd4\u5982\u5728\u5546\u57ce\u9996\u9875\u663e\u793a\u5546\u54c1\u5206\u7c7b\u7684\u5730\u65b9\uff0c\u5047\u8bbe\u8fd9\u91cc\u7684\u5206\u7c7b\u662f\u8c03\u7528\u63a5\u53e3\u83b7\u53d6\u5230\u7684\u6570\u636e\uff0c\u4f46\u9875\u9762\u6682\u65f6\u6ca1\u6709\u505a\u9759\u6001\u5316\u3002<\/p>\n
        \u5982\u679c\u67e5\u8be2\u5206\u7c7b\u6811\u7684\u63a5\u53e3\u6ca1\u6709\u4f7f\u7528\u7f13\u5b58\uff0c\u800c\u76f4\u63a5\u4ece\u6570\u636e\u5e93\u67e5\u8be2\u6570\u636e\uff0c\u6027\u80fd\u4f1a\u975e\u5e38\u5dee\u3002<\/p>\n
        \u90a3\u4e48\u5982\u4f55\u4f7f\u7528\u7f13\u5b58\u5462\uff1f<\/p>\n
        9.1 redis\u7f13\u5b58<\/span><\/h3>\n
        \u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4f7f\u7528\u6700\u591a\u7684\u7f13\u5b58\u53ef\u80fd\u662f\uff1aredis<\/code>\u548cmemcached<\/code>\u3002<\/p>\n
        \u4f46\u5bf9\u4e8ejava\u5e94\u7528\u6765\u8bf4\uff0c\u7edd\u5927\u591a\u6570\u90fd\u662f\u4f7f\u7528\u7684redis\uff0c\u6240\u4ee5\u63a5\u4e0b\u6765\u6211\u4eec\u4ee5redis\u4e3a\u4f8b\u3002<\/p>\n
        \u7531\u4e8e\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u6bd4\u5982\uff1amysql\u4e2d\uff0c\u83dc\u5355\u662f\u6709\u4e0a\u4e0b\u7ea7\u5173\u7cfb\u7684\u3002\u67d0\u4e2a\u56db\u7ea7\u5206\u7c7b\u662f\u67d0\u4e2a\u4e09\u7ea7\u5206\u7c7b\u7684\u5b50\u5206\u7c7b\uff0c\u8fd9\u4e2a\u4e09\u7ea7\u5206\u7c7b\uff0c\u53c8\u662f\u67d0\u4e2a\u4e8c\u7ea7\u5206\u7c7b\u7684\u5b50\u5206\u7c7b\uff0c\u800c\u8fd9\u4e2a\u4e8c\u7ea7\u5206\u7c7b\uff0c\u53c8\u662f\u67d0\u4e2a\u4e00\u7ea7\u5206\u7c7b\u7684\u5b50\u5206\u7c7b\u3002<\/p>\n
        \u8fd9\u79cd\u5b58\u50a8\u7ed3\u6784\u51b3\u5b9a\u4e86\uff0c\u60f3\u4e00\u6b21\u6027\u67e5\u51fa\u8fd9\u4e2a\u5206\u7c7b\u6811\uff0c\u5e76\u975e\u662f\u4e00\u4ef6\u975e\u5e38\u5bb9\u6613\u7684\u4e8b\u60c5\u3002\u8fd9\u5c31\u9700\u8981\u4f7f\u7528\u7a0b\u5e8f\u9012\u5f52\u67e5\u8be2\u4e86\uff0c\u5982\u679c\u5206\u7c7b\u591a\u7684\u8bdd\uff0c\u8fd9\u4e2a\u9012\u5f52\u662f\u6bd4\u8f83\u8017\u65f6\u7684\u3002<\/p>\n
        \u6240\u4ee5\uff0c\u5982\u679c\u6bcf\u6b21\u90fd\u76f4\u63a5\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u5206\u7c7b\u6811\u7684\u6570\u636e\uff0c\u662f\u4e00\u4e2a\u975e\u5e38\u8017\u65f6\u7684\u64cd\u4f5c\u3002<\/p>\n
        \u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7f13\u5b58\uff0c\u5927\u90e8\u5206\u60c5\u51b5\uff0c\u63a5\u53e3\u90fd\u76f4\u63a5\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e\u3002\u64cd\u4f5credis\u53ef\u4ee5\u4f7f\u7528\u6210\u719f\u7684\u6846\u67b6\uff0c\u6bd4\u5982\uff1ajedis\u548credisson\u7b49\u3002<\/p>\n
        \u7528jedis\u4f2a\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
        String\u00a0json\u00a0=\u00a0jedis.get(key);\r\nif<\/span>(StringUtils.isNotEmpty(json))\u00a0{\r\n\u00a0\u00a0\u00a0CategoryTree\u00a0categoryTree\u00a0=\u00a0JsonUtil.toObject(json);\r\n\u00a0\u00a0\u00a0return<\/span>\u00a0categoryTree;\r\n}\r\nreturn<\/span>\u00a0queryCategoryTreeFromDb();\r\n<\/code><\/pre>\n
        \u5148\u4eceredis\u4e2d\u6839\u636e\u67d0\u4e2akey\u67e5\u8be2\u662f\u5426\u6709\u83dc\u5355\u6570\u636e\uff0c\u5982\u679c\u6709\u5219\u8f6c\u6362\u6210\u5bf9\u8c61\uff0c\u76f4\u63a5\u8fd4\u56de\u3002\u5982\u679credis\u4e2d\u6ca1\u6709\u67e5\u5230\u83dc\u5355\u6570\u636e\uff0c\u5219\u518d\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u83dc\u5355\u6570\u636e\uff0c\u6709\u5219\u8fd4\u56de\u3002<\/p>\n
        \u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u6709\u4e2ajob\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\uff0c\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u83dc\u5355\u6570\u636e\uff0c\u66f4\u65b0\u5230redis\u5f53\u4e2d\uff0c\u8fd9\u6837\u4ee5\u540e\u6bcf\u6b21\u90fd\u80fd\u76f4\u63a5\u4eceredis\u4e2d\u83b7\u53d6\u83dc\u5355\u7684\u6570\u636e\uff0c\u800c\u65e0\u9700\u8bbf\u95ee\u6570\u636e\u5e93\u4e86\u3002
        <\/div>\u8fd9\u6837\u6539\u9020\u4e4b\u540e\uff0c\u80fd\u5feb\u901f\u7684\u63d0\u5347\u6027\u80fd\u3002<\/p>\n
        \u4f46\u8fd9\u6837\u505a\u6027\u80fd\u63d0\u5347\u4e0d\u662f\u6700\u4f73\u7684\uff0c\u8fd8\u6709\u5176\u4ed6\u7684\u65b9\u6848\uff0c\u6211\u4eec\u4e00\u8d77\u770b\u770b\u4e0b\u9762\u7684\u5185\u5bb9\u3002<\/p>\n
        9.2 \u4e8c\u7ea7\u7f13\u5b58<\/span><\/h3>\n
        \u4e0a\u9762\u7684\u65b9\u6848\u662f\u57fa\u4e8eredis\u7f13\u5b58\u7684\uff0c\u867d\u8bf4redis\u8bbf\u95ee\u901f\u5ea6\u5f88\u5feb\u3002\u4f46\u6bd5\u7adf\u662f\u4e00\u4e2a\u8fdc\u7a0b\u8c03\u7528\uff0c\u800c\u4e14\u83dc\u5355\u6811\u7684\u6570\u636e\u5f88\u591a\uff0c\u5728\u7f51\u7edc\u4f20\u8f93\u7684\u8fc7\u7a0b\u4e2d\uff0c\u662f\u6709\u4e9b\u8017\u65f6\u7684\u3002<\/p>\n
        \u6709\u6ca1\u6709\u529e\u6cd5\uff0c\u4e0d\u7ecf\u8fc7\u8bf7\u6c42\u8fdc\u7a0b\uff0c\u5c31\u80fd\u76f4\u63a5\u83b7\u53d6\u5230\u6570\u636e\u5462\uff1f<\/p>\n
        \u7b54\uff1a\u4f7f\u7528\u4e8c\u7ea7\u7f13\u5b58<\/code>\uff0c\u5373\u57fa\u4e8e\u5185\u5b58\u7684\u7f13\u5b58\u3002<\/p>\n
        \u9664\u4e86\u81ea\u5df1\u624b\u5199\u7684\u5185\u5b58\u7f13\u5b58\u4e4b\u540e\uff0c\u76ee\u524d\u4f7f\u7528\u6bd4\u8f83\u591a\u7684\u5185\u5b58\u7f13\u5b58\u6846\u67b6\u6709\uff1aguava\u3001Ehcache\u3001caffine\u7b49\u3002<\/p>\n
        \u6211\u4eec\u5728\u8fd9\u91cc\u4ee5caffeine<\/code>\u4e3a\u4f8b\uff0c\u5b83\u662fspring\u5b98\u65b9\u63a8\u8350\u7684\u3002<\/p>\n
        \u7b2c\u4e00\u6b65\uff0c\u5f15\u5165caffeine\u7684\u76f8\u5173jar\u5305<\/p>\n
        <dependency>\r\n\u00a0\u00a0\u00a0\u00a0<groupId>org.springframework.boot<\/groupId>\r\n\u00a0\u00a0\u00a0\u00a0<artifactId>spring-boot-starter-cache<\/artifactId>\r\n<\/dependency>\r\n<dependency>\r\n\u00a0\u00a0\u00a0\u00a0<groupId>com.github.ben-manes.caffeine<\/groupId>\r\n\u00a0\u00a0\u00a0\u00a0<artifactId>caffeine<\/artifactId>\r\n\u00a0\u00a0\u00a0\u00a0<version>2.6<\/span>.0<\/span><\/version>\r\n<\/dependency>\r\n<\/code><\/pre>\n
        \u7b2c\u4e8c\u6b65\uff0c\u914d\u7f6eCacheManager\uff0c\u5f00\u542fEnableCaching<\/p>\n
        @Configuration<\/span>\r\n@EnableCaching<\/span>\r\npublic<\/span>\u00a0class<\/span>\u00a0CacheConfig<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0\u00a0@Bean<\/span>\r\n\u00a0\u00a0\u00a0\u00a0public<\/span>\u00a0CacheManager\u00a0cacheManager<\/span>()<\/span><\/span>{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CaffeineCacheManager\u00a0cacheManager\u00a0=\u00a0new<\/span>\u00a0CaffeineCacheManager();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/Caffeine\u914d\u7f6e<\/span>\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Caffeine<Object,\u00a0Object>\u00a0caffeine\u00a0=\u00a0Caffeine.newBuilder()\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u6700\u540e\u4e00\u6b21\u5199\u5165\u540e\u7ecf\u8fc7\u56fa\u5b9a\u65f6\u95f4\u8fc7\u671f<\/span>\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0.expireAfterWrite(10<\/span>,\u00a0TimeUnit.SECONDS)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u7f13\u5b58\u7684\u6700\u5927\u6761\u6570<\/span>\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0.maximumSize(1000<\/span>);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cacheManager.setCaffeine(caffeine);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0cacheManager;\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}\r\n<\/code><\/pre>\n
        \u7b2c\u4e09\u6b65\uff0c\u4f7f\u7528Cacheable\u6ce8\u89e3\u83b7\u53d6\u6570\u636e<\/p>\n
        @Service<\/span>\r\npublic<\/span>\u00a0class<\/span>\u00a0CategoryService<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0\r\n\u00a0\u00a0\u00a0@Cacheable<\/span>(value\u00a0=\u00a0\"category\"<\/span>,\u00a0key\u00a0=\u00a0\"#categoryKey\"<\/span>)\r\n\u00a0\u00a0\u00a0public<\/span>\u00a0CategoryModel\u00a0getCategory<\/span>(String\u00a0categoryKey)<\/span>\u00a0<\/span>{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0String\u00a0json\u00a0=\u00a0jedis.get(categoryKey);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>(StringUtils.isNotEmpty(json))\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CategoryTree\u00a0categoryTree\u00a0=\u00a0JsonUtil.toObject(json);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0categoryTree;\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0queryCategoryTreeFromDb();\r\n\u00a0\u00a0\u00a0}\r\n}\r\n<\/code><\/pre>\n
        \u8c03\u7528categoryService.getCategory()\u65b9\u6cd5\u65f6\uff0c\u5148\u4ececaffine\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u5982\u679c\u80fd\u591f\u83b7\u53d6\u5230\u6570\u636e\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u8be5\u6570\u636e\uff0c\u4e0d\u8fdb\u5165\u65b9\u6cd5\u4f53\u3002<\/p>\n
        \u5982\u679c\u4e0d\u80fd\u83b7\u53d6\u5230\u6570\u636e\uff0c\u5219\u518d\u4eceredis\u4e2d\u67e5\u4e00\u6b21\u6570\u636e\u3002\u5982\u679c\u67e5\u8be2\u5230\u4e86\uff0c\u5219\u8fd4\u56de\u6570\u636e\uff0c\u5e76\u4e14\u653e\u5165caffine\u4e2d\u3002<\/p>\n
        \u5982\u679c\u8fd8\u662f\u6ca1\u6709\u67e5\u5230\u6570\u636e\uff0c\u5219\u76f4\u63a5\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u5230\u6570\u636e\uff0c\u7136\u540e\u653e\u5230caffine\u7f13\u5b58\u4e2d\u3002<\/p>\n
        \u5177\u4f53\u6d41\u7a0b\u56fe\u5982\u4e0b\uff1a
        <\/div>\u8be5\u65b9\u6848\u7684\u6027\u80fd\u66f4\u597d\uff0c\u4f46\u6709\u4e2a\u7f3a\u70b9\u5c31\u662f\uff0c\u5982\u679c\u6570\u636e\u66f4\u65b0\u4e86\uff0c\u4e0d\u80fd\u53ca\u65f6\u5237\u65b0\u7f13\u5b58\u3002\u6b64\u5916\uff0c\u5982\u679c\u6709\u591a\u53f0\u670d\u52a1\u5668\u8282\u70b9\uff0c\u53ef\u80fd\u5b58\u5728\u5404\u4e2a\u8282\u70b9\u4e0a\u6570\u636e\u4e0d\u4e00\u6837\u7684\u60c5\u51b5\u3002<\/p>\n
        \u7531\u6b64\u53ef\u89c1\uff0c\u4e8c\u7ea7\u7f13\u5b58\u7ed9\u6211\u4eec\u5e26\u6765\u6027\u80fd\u63d0\u5347\u7684\u540c\u65f6\uff0c\u4e5f\u5e26\u6765\u4e86\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002\u4f7f\u7528\u4e8c\u7ea7\u7f13\u5b58\u4e00\u5b9a\u8981\u7ed3\u5408\u5b9e\u9645\u7684\u4e1a\u52a1\u573a\u666f\uff0c\u5e76\u975e\u6240\u6709\u7684\u4e1a\u52a1\u573a\u666f\u90fd\u9002\u7528\u3002<\/p>\n
        \u4f46\u4e0a\u9762\u6211\u5217\u4e3e\u7684\u5206\u7c7b\u573a\u666f\uff0c\u662f\u9002\u5408\u4f7f\u7528\u4e8c\u7ea7\u7f13\u5b58\u7684\u3002\u56e0\u4e3a\u5b83\u5c5e\u4e8e\u7528\u6237\u4e0d\u654f\u611f\u6570\u636e\uff0c\u5373\u4f7f\u51fa\u73b0\u4e86\u7a0d\u5fae\u6709\u70b9\u6570\u636e\u4e0d\u4e00\u81f4\u4e5f\u6ca1\u6709\u5173\u7cfb\uff0c\u7528\u6237\u6709\u53ef\u80fd\u90fd\u6ca1\u6709\u5bdf\u89c9\u51fa\u6765\u3002<\/p>\n
        10. \u5206\u5e93\u5206\u8868<\/span><\/h2>\n
        \u6709\u65f6\u5019\uff0c\u63a5\u53e3\u6027\u80fd\u53d7\u9650\u7684\u4e0d\u662f\u522b\u7684\uff0c\u800c\u662f\u6570\u636e\u5e93\u3002<\/p>\n
        \u5f53\u7cfb\u7edf\u53d1\u5c55\u5230\u4e00\u5b9a\u7684\u9636\u6bb5\uff0c\u7528\u6237\u5e76\u53d1\u91cf\u5927\uff0c\u4f1a\u6709\u5927\u91cf\u7684\u6570\u636e\u5e93\u8bf7\u6c42\uff0c\u9700\u8981\u5360\u7528\u5927\u91cf\u7684\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u540c\u65f6\u4f1a\u5e26\u6765\u78c1\u76d8IO\u7684\u6027\u80fd\u74f6\u9888\u95ee\u9898\u3002<\/p>\n
        \u6b64\u5916\uff0c\u968f\u7740\u7528\u6237\u6570\u91cf\u8d8a\u6765\u8d8a\u591a\uff0c\u4ea7\u751f\u7684\u6570\u636e\u4e5f\u8d8a\u6765\u8d8a\u591a\uff0c\u4e00\u5f20\u8868\u6709\u53ef\u80fd\u5b58\u4e0d\u4e0b\u3002\u7531\u4e8e\u6570\u636e\u91cf\u592a\u5927\uff0csql\u8bed\u53e5\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u5373\u4f7f\u8d70\u4e86\u7d22\u5f15\u4e5f\u4f1a\u975e\u5e38\u8017\u65f6\u3002<\/p>\n
        \u8fd9\u65f6\u8be5\u600e\u4e48\u529e\u5462\uff1f<\/p>\n
        \u7b54\uff1a\u9700\u8981\u505a\u5206\u5e93\u5206\u8868<\/code>\u3002<\/p>\n
        \u5982\u4e0b\u56fe\u6240\u793a\uff1a
        <\/div>\u56fe\u4e2d\u5c06\u7528\u6237\u5e93\u62c6\u5206\u6210\u4e86\u4e09\u4e2a\u5e93\uff0c\u6bcf\u4e2a\u5e93\u90fd\u5305\u542b\u4e86\u56db\u5f20\u7528\u6237\u8868\u3002<\/p>\n
        \u5982\u679c\u6709\u7528\u6237\u8bf7\u6c42\u8fc7\u6765\u7684\u65f6\u5019\uff0c\u5148\u6839\u636e\u7528\u6237id\u8def\u7531\u5230\u5176\u4e2d\u4e00\u4e2a\u7528\u6237\u5e93\uff0c\u7136\u540e\u518d\u5b9a\u4f4d\u5230\u67d0\u5f20\u8868\u3002<\/p>\n
        \u8def\u7531\u7684\u7b97\u6cd5\u633a\u591a\u7684\uff1a<\/p>\n
          \n
        • \n
          \u6839\u636eid\u53d6\u6a21<\/code>\uff0c\u6bd4\u5982\uff1aid=7\uff0c\u67094\u5f20\u8868\uff0c\u52197%4=3\uff0c\u6a21\u4e3a3\uff0c\u8def\u7531\u5230\u7528\u6237\u88683\u3002<\/section>\n<\/li>\n
        • \n
          \u7ed9id\u6307\u5b9a\u4e00\u4e2a\u533a\u95f4\u8303\u56f4<\/code>\uff0c\u6bd4\u5982\uff1aid\u7684\u503c\u662f0-10\u4e07\uff0c\u5219\u6570\u636e\u5b58\u5728\u7528\u6237\u88680\uff0cid\u7684\u503c\u662f10-20\u4e07\uff0c\u5219\u6570\u636e\u5b58\u5728\u7528\u6237\u88681\u3002<\/section>\n<\/li>\n
        • \n
          \u4e00\u81f4\u6027hash\u7b97\u6cd5<\/code><\/section>\n<\/li>\n<\/ul>\n
          \u5206\u5e93\u5206\u8868\u4e3b\u8981\u6709\u4e24\u4e2a\u65b9\u5411\uff1a\u5782\u76f4<\/code>\u548c\u6c34\u5e73<\/code>\u3002<\/p>\n
          \u8bf4\u5b9e\u8bdd\u5782\u76f4\u65b9\u5411\uff08\u5373\u4e1a\u52a1\u65b9\u5411\uff09\u66f4\u7b80\u5355\u3002<\/p>\n
          \u5728\u6c34\u5e73\u65b9\u5411\uff08\u5373\u6570\u636e\u65b9\u5411\uff09\u4e0a\uff0c\u5206\u5e93\u548c\u5206\u8868\u7684\u4f5c\u7528\uff0c\u5176\u5b9e\u662f\u6709\u533a\u522b\u7684\uff0c\u4e0d\u80fd\u6df7\u4e3a\u4e00\u8c08\u3002<\/p>\n
            \n
          • \n
            \u5206\u5e93<\/code>\uff1a\u662f\u4e3a\u4e86\u89e3\u51b3\u6570\u636e\u5e93\u8fde\u63a5\u8d44\u6e90\u4e0d\u8db3\u95ee\u9898\uff0c\u548c\u78c1\u76d8IO\u7684\u6027\u80fd\u74f6\u9888\u95ee\u9898\u3002<\/section>\n<\/li>\n
          • \n
            \u5206\u8868<\/code>\uff1a\u662f\u4e3a\u4e86\u89e3\u51b3\u5355\u8868\u6570\u636e\u91cf\u592a\u5927\uff0csql\u8bed\u53e5\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u5373\u4f7f\u8d70\u4e86\u7d22\u5f15\u4e5f\u975e\u5e38\u8017\u65f6\u95ee\u9898\u3002\u6b64\u5916\u8fd8\u53ef\u4ee5\u89e3\u51b3\u6d88\u8017cpu\u8d44\u6e90\u95ee\u9898\u3002<\/section>\n<\/li>\n
          • \n
            \u5206\u5e93\u5206\u8868<\/code>\uff1a\u53ef\u4ee5\u89e3\u51b3 \u6570\u636e\u5e93\u8fde\u63a5\u8d44\u6e90\u4e0d\u8db3\u3001\u78c1\u76d8IO\u7684\u6027\u80fd\u74f6\u9888\u3001\u68c0\u7d22\u6570\u636e\u8017\u65f6 \u548c \u6d88\u8017cpu\u8d44\u6e90\u7b49\u95ee\u9898\u3002<\/section>\n<\/li>\n<\/ul>\n
            \u5982\u679c\u5728\u6709\u4e9b\u4e1a\u52a1\u573a\u666f\u4e2d\uff0c\u7528\u6237\u5e76\u53d1\u91cf\u5f88\u5927\uff0c\u4f46\u662f\u9700\u8981\u4fdd\u5b58\u7684\u6570\u636e\u91cf\u5f88\u5c11\uff0c\u8fd9\u65f6\u53ef\u4ee5\u53ea\u5206\u5e93\uff0c\u4e0d\u5206\u8868\u3002<\/p>\n
            \u5982\u679c\u5728\u6709\u4e9b\u4e1a\u52a1\u573a\u666f\u4e2d\uff0c\u7528\u6237\u5e76\u53d1\u91cf\u4e0d\u5927\uff0c\u4f46\u662f\u9700\u8981\u4fdd\u5b58\u7684\u6570\u91cf\u5f88\u591a\uff0c\u8fd9\u65f6\u53ef\u4ee5\u53ea\u5206\u8868\uff0c\u4e0d\u5206\u5e93\u3002<\/p>\n
            \u5982\u679c\u5728\u6709\u4e9b\u4e1a\u52a1\u573a\u666f\u4e2d\uff0c\u7528\u6237\u5e76\u53d1\u91cf\u5927\uff0c\u5e76\u4e14\u9700\u8981\u4fdd\u5b58\u7684\u6570\u91cf\u4e5f\u5f88\u591a\u65f6\uff0c\u53ef\u4ee5\u5206\u5e93\u5206\u8868\u3002<\/p>\n
            \u5173\u4e8e\u5206\u5e93\u5206\u8868\u66f4\u8be6\u7ec6\u7684\u5185\u5bb9\uff0c\u53ef\u4ee5\u770b\u770b\u6211\u53e6\u4e00\u7bc7\u6587\u7ae0\uff0c\u91cc\u9762\u8bb2\u7684\u66f4\u6df1\u5165\u300a\u300b<\/p>\n
            11. \u8f85\u52a9\u529f\u80fd<\/span><\/h2>\n
            \u4f18\u5316\u63a5\u53e3\u6027\u80fd\u95ee\u9898\uff0c\u9664\u4e86\u4e0a\u9762\u63d0\u5230\u7684\u8fd9\u4e9b\u5e38\u7528\u65b9\u6cd5\u4e4b\u5916\uff0c\u8fd8\u9700\u8981\u914d\u5408\u4f7f\u7528\u4e00\u4e9b\u8f85\u52a9\u529f\u80fd\uff0c\u56e0\u4e3a\u5b83\u4eec\u771f\u7684\u53ef\u4ee5\u5e2e\u6211\u4eec\u63d0\u5347\u67e5\u627e\u95ee\u9898\u7684\u6548\u7387\u3002<\/p>\n
            11.1 \u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7<\/span><\/h3>\n
            \u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4e3a\u4e86\u5b9a\u4f4dsql\u7684\u6027\u80fd\u74f6\u9888\uff0c\u6211\u4eec\u9700\u8981\u5f00\u542fmysql\u7684\u6162\u67e5\u8be2\u65e5\u5fd7\u3002\u628a\u8d85\u8fc7\u6307\u5b9a\u65f6\u95f4\u7684sql\u8bed\u53e5\uff0c\u5355\u72ec\u8bb0\u5f55\u4e0b\u6765\uff0c\u65b9\u9762\u4ee5\u540e\u5206\u6790\u548c\u5b9a\u4f4d\u95ee\u9898\u3002<\/p>\n
            \u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7\u9700\u8981\u91cd\u70b9\u5173\u6ce8\u4e09\u4e2a\u53c2\u6570\uff1a<\/p>\n
              \n
            • \n
              slow_query_log<\/code> \u6162\u67e5\u8be2\u5f00\u5173<\/section>\n<\/li>\n
            • \n
              slow_query_log_file<\/code> \u6162\u67e5\u8be2\u65e5\u5fd7\u5b58\u653e\u7684\u8def\u5f84<\/section>\n<\/li>\n
            • \n
              long_query_time<\/code> \u8d85\u8fc7\u591a\u5c11\u79d2\u624d\u4f1a\u8bb0\u5f55\u65e5\u5fd7<\/section>\n<\/li>\n<\/ul>\n
              \u901a\u8fc7mysql\u7684set<\/code>\u547d\u4ee4\u53ef\u4ee5\u8bbe\u7f6e\uff1a<\/p>\n
              set<\/span>\u00a0global<\/span>\u00a0slow_query_log='ON'<\/span>;\u00a0\r\nset<\/span>\u00a0global<\/span>\u00a0slow_query_log_file='\/usr\/local\/mysql\/data\/slow.log'<\/span>;\r\nset<\/span>\u00a0global<\/span>\u00a0long_query_time=2<\/span>;\r\n<\/code><\/pre>\n
              \u8bbe\u7f6e\u5b8c\u4e4b\u540e\uff0c\u5982\u679c\u67d0\u6761sql\u7684\u6267\u884c\u65f6\u95f4\u8d85\u8fc7\u4e862\u79d2\uff0c\u4f1a\u88ab\u81ea\u52a8\u8bb0\u5f55\u5230slow.log\u6587\u4ef6\u4e2d\u3002<\/p>\n
              \u5f53\u7136\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\u914d\u7f6e\u6587\u4ef6my.cnf<\/code><\/p>\n
              [mysqld]\r\nslow_query_log\u00a0=\u00a0ON\r\nslow_query_log_file\u00a0=\u00a0\/usr\/local\/mysql\/data\/slow.log\r\nlong_query_time\u00a0=\u00a02<\/span>\r\n<\/code><\/pre>\n
              \u4f46\u8fd9\u79cd\u65b9\u5f0f\u9700\u8981\u91cd\u542fmysql\u670d\u52a1\u3002<\/p>\n
              \u5f88\u591a\u516c\u53f8\u6bcf\u5929\u65e9\u4e0a\u90fd\u4f1a\u53d1\u4e00\u5c01\u6162\u67e5\u8be2\u65e5\u5fd7\u7684\u90ae\u4ef6\uff0c\u5f00\u53d1\u4eba\u5458\u6839\u636e\u8fd9\u4e9b\u4fe1\u606f\u4f18\u5316sql\u3002<\/p>\n
              11.2 \u52a0\u76d1\u63a7<\/span><\/h3>\n
              \u4e3a\u4e86\u51fa\u73b0sql\u95ee\u9898\u65f6\uff0c\u80fd\u591f\u8ba9\u6211\u4eec\u53ca\u65f6\u53d1\u73b0\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u7cfb\u7edf\u505a\u76d1\u63a7<\/code>\u3002<\/p>\n
              \u76ee\u524d\u4e1a\u754c\u4f7f\u7528\u6bd4\u8f83\u591a\u7684\u5f00\u6e90\u76d1\u63a7\u7cfb\u7edf\u662f\uff1aPrometheus<\/code>\u3002<\/p>\n
              \u5b83\u63d0\u4f9b\u4e86 \u76d1\u63a7<\/code> \u548c \u9884\u8b66<\/code> \u7684\u529f\u80fd\u3002<\/p>\n
              \u67b6\u6784\u56fe\u5982\u4e0b\uff1a
              <\/div><\/p>\n
              \u6211\u4eec\u53ef\u4ee5\u7528\u5b83\u76d1\u63a7\u5982\u4e0b\u4fe1\u606f\uff1a<\/p>\n
                \n
              • \n
                \u63a5\u53e3\u54cd\u5e94\u65f6\u95f4<\/section>\n<\/li>\n
              • \n
                \u8c03\u7528\u7b2c\u4e09\u65b9\u670d\u52a1\u8017\u65f6<\/section>\n<\/li>\n
              • \n
                \u6162\u67e5\u8be2sql\u8017\u65f6<\/section>\n<\/li>\n
              • \n
                cpu\u4f7f\u7528\u60c5\u51b5<\/section>\n<\/li>\n
              • \n
                \u5185\u5b58\u4f7f\u7528\u60c5\u51b5<\/section>\n<\/li>\n
              • \n
                \u78c1\u76d8\u4f7f\u7528\u60c5\u51b5<\/section>\n<\/li>\n
              • \n
                \u6570\u636e\u5e93\u4f7f\u7528\u60c5\u51b5<\/section>\n<\/li>\n<\/ul>\n
                \u7b49\u7b49\u3002\u3002\u3002<\/p>\n
                \u5b83\u7684\u754c\u9762\u5927\u6982\u957f\u8fd9\u6837\u5b50\uff1a
                <\/div>\u53ef\u4ee5\u770b\u5230mysql\u5f53\u524dqps\uff0c\u6d3b\u8dc3\u7ebf\u7a0b\u6570\uff0c\u8fde\u63a5\u6570\uff0c\u7f13\u5b58\u6c60\u7684\u5927\u5c0f\u7b49\u4fe1\u606f\u3002<\/p>\n
                \u5982\u679c\u53d1\u73b0\u6570\u636e\u91cf\u8fde\u63a5\u6c60\u5360\u7528\u592a\u591a\uff0c\u5bf9\u63a5\u53e3\u7684\u6027\u80fd\u80af\u5b9a\u4f1a\u6709\u5f71\u54cd\u3002<\/p>\n
                \u8fd9\u65f6\u53ef\u80fd\u662f\u4ee3\u7801\u4e2d\u5f00\u542f\u4e86\u8fde\u63a5\u5fd8\u4e86\u5173\uff0c\u6216\u8005\u5e76\u53d1\u91cf\u592a\u5927\u4e86\u5bfc\u81f4\u7684\uff0c\u9700\u8981\u505a\u8fdb\u4e00\u6b65\u6392\u67e5\u548c\u7cfb\u7edf\u4f18\u5316\u3002<\/p>\n
                \u622a\u56fe\u4e2d\u53ea\u662f\u5b83\u4e00\u5c0f\u90e8\u5206\u529f\u80fd\uff0c\u5982\u679c\u4f60\u60f3\u4e86\u89e3\u66f4\u591a\u529f\u80fd\uff0c\u53ef\u4ee5\u8bbf\u95eePrometheus\u7684\u5b98\u7f51\uff1ahttps:\/\/prometheus.io\/<\/p>\n
                11.3 \u94fe\u8def\u8ddf\u8e2a<\/span><\/h3>\n
                \u6709\u65f6\u5019\u67d0\u4e2a\u63a5\u53e3\u6d89\u53ca\u7684\u903b\u8f91\u5f88\u591a\uff0c\u6bd4\u5982\uff1a\u67e5\u6570\u636e\u5e93\u3001\u67e5redis\u3001\u8fdc\u7a0b\u8c03\u7528\u63a5\u53e3\uff0c\u53d1mq\u6d88\u606f\uff0c\u6267\u884c\u4e1a\u52a1\u4ee3\u7801\u7b49\u7b49\u3002<\/p>\n
                \u8be5\u63a5\u53e3\u4e00\u6b21\u8bf7\u6c42\u7684\u94fe\u8def\u5f88\u957f\uff0c\u5982\u679c\u9010\u4e00\u6392\u67e5\uff0c\u9700\u8981\u82b1\u8d39\u5927\u91cf\u7684\u65f6\u95f4\uff0c\u8fd9\u65f6\u5019\uff0c\u6211\u4eec\u5df2\u7ecf\u6ca1\u6cd5\u7528\u4f20\u7edf\u7684\u529e\u6cd5\u5b9a\u4f4d\u95ee\u9898\u4e86\u3002<\/p>\n
                \u6709\u6ca1\u6709\u529e\u6cd5\u89e3\u51b3\u8fd9\u95ee\u9898\u5462\uff1f<\/p>\n
                \u7528\u5206\u5e03\u5f0f\u94fe\u8def\u8ddf\u8e2a\u7cfb\u7edf\uff1askywalking<\/code>\u3002<\/p>\n
                \u67b6\u6784\u56fe\u5982\u4e0b\uff1a
                <\/div>\u901a\u8fc7skywalking\u5b9a\u4f4d\u6027\u80fd\u95ee\u9898\uff1a
                <\/div>\u5728skywalking\u4e2d\u53ef\u4ee5\u901a\u8fc7traceId<\/code>\uff08\u5168\u5c40\u552f\u4e00\u7684id\uff09\uff0c\u4e32\u8054\u4e00\u4e2a\u63a5\u53e3\u8bf7\u6c42\u7684\u5b8c\u6574\u94fe\u8def\u3002\u53ef\u4ee5\u770b\u5230\u6574\u4e2a\u63a5\u53e3\u7684\u8017\u65f6\uff0c\u8c03\u7528\u7684\u8fdc\u7a0b\u670d\u52a1\u7684\u8017\u65f6\uff0c\u8bbf\u95ee\u6570\u636e\u5e93\u6216\u8005redis\u7684\u8017\u65f6\u7b49\u7b49\uff0c\u529f\u80fd\u975e\u5e38\u5f3a\u5927\u3002<\/p>\n
                \u4e4b\u524d\u6ca1\u6709\u8fd9\u4e2a\u529f\u80fd\u7684\u65f6\u5019\uff0c\u4e3a\u4e86\u5b9a\u4f4d\u7ebf\u4e0a\u63a5\u53e3\u6027\u80fd\u95ee\u9898\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5728\u4ee3\u7801\u4e2d\u52a0\u65e5\u5fd7\uff0c\u624b\u52a8\u6253\u5370\u51fa\u94fe\u8def\u4e2d\u5404\u4e2a\u73af\u8282\u7684\u8017\u65f6\u60c5\u51b5\uff0c\u7136\u540e\u518d\u9010\u4e00\u6392\u67e5\u3002<\/p>\n
                \u5982\u679c\u4f60\u7528\u8fc7skywalking\u6392\u67e5\u63a5\u53e3\u6027\u80fd\u95ee\u9898\uff0c\u4e0d\u81ea\u89c9\u7684\u4f1a\u7231\u4e0a\u5b83\u7684\u3002\u5982\u679c\u4f60\u60f3\u4e86\u89e3\u66f4\u591a\u529f\u80fd\uff0c\u53ef\u4ee5\u8bbf\u95eeskywalking\u7684\u5b98\u7f51\uff1ahttps:\/\/skywalking.apache.org\/<\/p>\n
                \n<\/section>\n<\/section>\n
                <\/section>\n
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