{"id":2957,"date":"2021-10-15T17:15:00","date_gmt":"2021-10-16T00:15:00","guid":{"rendered":"https:\/\/www.xh86.me\/?p=2957"},"modified":"2021-10-16T17:03:19","modified_gmt":"2021-10-17T00:03:19","slug":"%e5%8d%81%e4%ba%bf%e7%ba%a7%e6%b5%81%e9%87%8f%e4%b8%8b%ef%bc%8c%e6%88%91%e4%b8%8eredis%e6%97%b6%e5%bb%b6%e5%b0%8f%e7%aa%81%e5%88%ba%e7%9a%84%e6%88%98%e6%96%97%e5%8f%b2","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=2957","title":{"rendered":"\u5341\u4ebf\u7ea7\u6d41\u91cf\u4e0b\uff0c\u6211\u4e0eRedis\u65f6\u5ef6\u5c0f\u7a81\u523a\u7684\u6218\u6597\u53f2"},"content":{"rendered":"
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<\/div><\/p>\n
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<\/section>\n
\u4e00\u3001\u80cc\u666f<\/section>\n

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 <\/p>\n<\/section>\n

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\n
\u67d0\u4e00\u65e5\u6536\u5230\u4e0a\u6e38\u8c03\u7528\u65b9\u7684\u53cd\u9988\uff0c\u63d0\u4f9b\u7684\u67d0\u4e00\u4e2aDubbo\u63a5\u53e3\uff0c\u6bcf\u5929\u5728\u56fa\u5b9a\u7684\u65f6\u95f4\u70b9\u88ab\u77ed\u65f6\u95f4\u7194\u65ad\uff0c\u629b\u51fa\u7684\u5f02\u5e38\u4fe1\u606f\u4e3a\u63d0\u4f9b\u65b9Dubbo\u7ebf\u7a0b\u6c60\u88ab\u8017\u5c3d\u3002\u5f53\u524dDubbo\u63a5\u53e3\u65e5\u8bf7\u6c42\u91cf18\u4ebf\u6b21\uff0c\u62a5\u9519\u8bf7\u6c4294W\/\u5929\uff0c\u81f3\u6b64\u5f00\u59cb\u4e86\u4f18\u5316\u4e4b\u65c5\u3002<\/section>\n<\/section>\n<\/section>\n

 <\/p>\n

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\u4e8c\u3001\u5feb\u901f\u5e94\u6025<\/section>\n

<\/div><\/p>\n

 <\/p>\n<\/section>\n

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2.1 \u5feb\u901f\u5b9a\u4f4d<\/strong><\/section>\n
<\/section>\n
\u9996\u5148\u8fdb\u884c\u5e38\u89c4\u7684\u7cfb\u7edf\u4fe1\u606f\u76d1\u63a7\uff08\u673a\u5668\u3001JVM\u5185\u5b58\u3001GC\u3001\u7ebf\u7a0b\uff09\uff0c\u53d1\u73b0\u867d\u7a0d\u6709\u7a81\u523a\uff0c\u4f46\u90fd\u5728\u5408\u7406\u8303\u56f4\u5185\uff0c\u4e14\u8ddf\u62a5\u9519\u65f6\u95f4\u70b9\u5bf9\u4e0d\u4e0a\uff0c\u5148\u6682\u65f6\u5ffd\u7565\u3002<\/section>\n
<\/section>\n
\u5176\u6b21\u8fdb\u884c\u6d41\u91cf\u5206\u6790\uff0c\u53d1\u73b0\u6bcf\u5929\u56fa\u5b9a\u65f6\u95f4\u70b9\u4f1a\u6709\u6d41\u91cf\u7a81\u589e\u7684\u60c5\u51b5\uff0c\u6d41\u91cf\u7a81\u589e\u7684\u70b9\u8ddf\u62a5\u9519\u7684\u65f6\u95f4\u70b9\u4e5f\u543b\u5408\uff0c\u521d\u6b65\u5224\u65ad\u4e3a\u77ed\u65f6\u5927\u6d41\u91cf\u5bfc\u81f4\u3002<\/section>\n
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<\/div><\/span><\/p>\n<\/section>\n
\u6d41\u91cf\u8d8b\u52bf<\/span><\/section>\n
<\/section>\n
<\/div><\/span><\/p>\n<\/section>\n
\u88ab\u964d\u7ea7\u91cf<\/span><\/section>\n
<\/section>\n
<\/div><\/span><\/p>\n<\/section>\n
\u63a5\u53e399\u7ebf<\/span><\/section>\n<\/section>\n<\/section>\n

 <\/p>\n

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\u4e09\u3001\u5bfb\u627e\u6027\u80fd\u74f6\u9888\u70b9<\/section>\n

<\/div><\/p>\n

 <\/p>\n<\/section>\n

\n
\n
3.1 \u63a5\u53e3\u6d41\u7a0b\u5206\u6790<\/strong><\/section>\n
<\/section>\n
3.1.1 \u6d41\u7a0b\u56fe<\/strong><\/span><\/section>\n
<\/section>\n
<\/div><\/p>\n<\/section>\n
<\/section>\n
3.1.2 \u6d41\u7a0b\u5206\u6790<\/strong><\/span><\/section>\n
<\/section>\n
\u6536\u5230\u8bf7\u6c42\u540e\u8c03\u7528\u4e0b\u6e38\u63a5\u53e3\uff0c\u4f7f\u7528Hystrix\u7194\u65ad\u5668\uff0c\u7194\u65ad\u65f6\u95f4\u4e3a500MS\u3002<\/section>\n
<\/section>\n
\u6839\u636e\u4e0b\u6e38\u63a5\u53e3\u8fd4\u56de\u7684\u6570\u636e\uff0c\u8fdb\u884c\u8be6\u60c5\u6570\u636e\u7684\u5c01\u88c5\uff0c\u7b2c\u4e00\u6b65\u5148\u5230\u672c\u5730\u7f13\u5b58\u4e2d\u83b7\u53d6\uff0c\u5982\u679c\u672c\u5730\u7f13\u5b58\u6ca1\u6709\uff0c\u5219\u4eceRedis\u8fdb\u884c\u56de\u6e90\uff0cRedis\u4e2d\u65e0\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u5f02\u6b65\u7ebf\u7a0b\u4ece\u6570\u636e\u5e93\u8fdb\u884c\u56de\u6e90\u3002<\/section>\n
<\/section>\n
\u5982\u679c\u7b2c\u4e00\u6b65\u8c03\u7528\u4e0b\u6e38\u63a5\u53e3\u5f02\u5e38\uff0c\u5219\u8fdb\u884c\u6570\u636e\u515c\u5e95\uff0c\u515c\u5e95\u6d41\u7a0b\u4e3a\u5148\u5230\u672c\u5730\u7f13\u5b58\u4e2d\u83b7\u53d6\uff0c\u5982\u679c\u672c\u5730\u7f13\u5b58\u6ca1\u6709\uff0c\u5219\u4eceRedis\u8fdb\u884c\u56de\u6e90\uff0cRedis\u4e2d\u65e0\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u5f02\u6b65\u7ebf\u7a0b\u4ece\u6570\u636e\u5e93\u8fdb\u884c\u56de\u6e90\u3002<\/section>\n
<\/section>\n
3.2 \u6027\u80fd\u74f6\u9888\u70b9\u6392\u67e5<\/strong><\/section>\n
<\/section>\n
3.2.1 \u4e0b\u6e38\u63a5\u53e3\u670d\u52a1\u8017\u65f6\u6bd4\u8f83\u957f<\/strong><\/span><\/section>\n
<\/section>\n
\u8c03\u7528\u94fe\u663e\u793a\uff0c\u867d\u7136\u4e0b\u6e38\u63a5\u53e3\u7684P99\u7ebf\u5728\u5cf0\u503c\u6d41\u91cf\u65f6\u5b58\u5728\u7a81\u523a\uff0c\u8d85\u51fa1S\uff0c\u4f46\u56e0\u4e3a\u7194\u65ad\u8d85\u65f6\u7684\u8bbe\u7f6e\uff08\u7194\u65ad\u65f6\u95f4500MS\uff0ccoreSize&masSize=50\uff0c\u4e0b\u6e38\u63a5\u53e3\u5e73\u5747\u8017\u65f610MS\u4ee5\u4e0b\uff09\uff0c\u5224\u65ad\u4e0b\u6e38\u63a5\u53e3\u4e0d\u662f\u95ee\u9898\u7684\u5173\u952e\u70b9\uff0c\u4e3a\u8fdb\u4e00\u6b65\u6392\u9664\u5e72\u6270\uff0c\u5728\u4e0b\u6e38\u670d\u52a1\u5b58\u5728\u7a81\u523a\u65f6\u80fd\u5feb\u901f\u5931\u8d25\uff0c\u8c03\u6574\u7194\u65ad\u65f6\u95f4\u4e3a100MS\uff0cDubbo\u8d85\u65f6\u65f6\u95f4100MS\u3002<\/section>\n
<\/section>\n
3.2.2 \u83b7\u53d6\u8be6\u60c5\u672c\u5730\u7f13\u5b58\u65e0\u6570\u636e\uff0cRedis\u56de\u6e90<\/strong><\/span><\/section>\n
<\/section>\n
\u501f\u52a9\u8c03\u7528\u94fe\u5e73\u53f0\uff0c\u7b2c\u4e00\u6b65\u5206\u6790Redis\u8bf7\u6c42\u6d41\u91cf\uff0c\u4ee5\u6b64\u6765\u5224\u65ad\u672c\u5730\u7f13\u5b58\u7684\u547d\u4e2d\u7387\uff0c\u53d1\u73b0Redis\u7684\u6d41\u91cf\u662f\u63a5\u53e3\u6d41\u91cf\u76842\u500d\uff0c\u4ece\u8bbe\u8ba1\u4e0a\u6765\u8bf4\u4e0d\u5e94\u8be5\u51fa\u73b0\u8fd9\u4e2a\u73b0\u8c61\u3002\u5f00\u59cb\u4ee3\u7801Review\uff0c\u53d1\u73b0\u5728\u6709\u4e00\u5904\u903b\u8f91\u51fa\u73b0\u4e86\u95ee\u9898\u3002<\/section>\n
<\/section>\n
\u6ca1\u6709\u4ece\u672c\u5730\u7f13\u5b58\u8bfb\u53d6\uff0c\u800c\u662f\u76f4\u63a5\u4eceRedis\u4e2d\u83b7\u53d6\u4e86\u6570\u636e\uff0cRedis\u6700\u5927\u54cd\u5e94\u65f6\u95f4\u4e5f\u786e\u5b9e\u53d1\u73b0\u4e86\u4e0d\u5408\u7406\u7684\u7a81\u523a\uff0c\u7ee7\u7eed\u5206\u6790\u53d1\u73b0Redis\u54cd\u5e94\u65f6\u95f4\u548cDubbo99\u7ebf\u7a81\u523a\u60c5\u51b5\u57fa\u672c\u4e00\u81f4\uff0c\u611f\u89c9\u6b64\u65f6\u5df2\u7ecf\u627e\u5230\u4e86\u95ee\u9898\u7684\u539f\u56e0\uff0c\u5fc3\u4e2d\u6697\u559c\u3002<\/section>\n
<\/section>\n
<\/div><\/span><\/p>\n<\/section>\n
Redis\u8bf7\u6c42\u6d41\u91cf<\/span><\/section>\n
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<\/div><\/span><\/p>\n<\/section>\n
\u670d\u52a1\u63a5\u53e3\u8bf7\u6c42\u6d41\u91cf<\/span><\/section>\n
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<\/div><\/span><\/p>\n<\/section>\n
Dubbo99\u7ebf<\/span><\/section>\n
<\/section>\n
<\/div><\/span><\/p>\n<\/section>\n
Redis\u6700\u5927\u54cd\u5e94\u65f6\u95f4<\/span><\/section>\n
<\/section>\n
3.2.3 \u83b7\u53d6\u515c\u5e95\u6570\u636e\u672c\u5730\u7f13\u5b58\u65e0\u6570\u636e\uff0cRedis\u56de\u6e90<\/strong><\/span><\/section>\n
<\/section>\n
\u6b63\u5e38\u3002<\/section>\n
<\/section>\n
3.2.4 \u8bb0\u5f55\u8bf7\u6c42\u7ed3\u679c\u5165Redis<\/strong><\/span><\/section>\n
<\/section>\n
\u56e0\u4e3a\u5f53\u524dRedis\u505a\u4e86\u8d44\u6e90\u9694\u79bb\uff0c\u4e14\u672a\u5728DB\u540e\u53f0\u67e5\u8be2\u5230\u6162\u65e5\u5fd7\uff0c\u6b64\u65f6\u5206\u6790\u5bfc\u81f4Redis\u53d8\u6162\u7684\u539f\u56e0\u6709\u5f88\u591a\uff0c\u4e0d\u8fc7\u5176\u4ed6\u7684\u90fd\u88ab\u4e3b\u89c2\u5ffd\u7565\u4e86\uff0c\u6ce8\u610f\u529b\u90fd\u5728\u8bf7\u6c42Redis\u6d41\u91cf\u7ffb\u500d\u7684\u95ee\u9898\u4e0a\u4e86\uff0c\u6545\u4f18\u5148\u89e3\u51b33.2.2\u4e2d\u7684\u95ee\u9898\u3002<\/section>\n<\/section>\n<\/section>\n

 <\/p>\n

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\u56db\u3001\u89e3\u51b3\u65b9\u6848<\/section>\n

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 <\/p>\n<\/section>\n

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4.1 3.3.2\u4e2d\u5b9a\u4f4d\u7684\u95ee\u9898\u4e0a\u7ebf<\/strong><\/section>\n
<\/section>\n
<\/div><\/span><\/p>\n<\/section>\n
\u4e0a\u7ebf\u524dRedis\u8bf7\u6c42\u91cf<\/span><\/section>\n
<\/section>\n
<\/div><\/span><\/p>\n<\/section>\n
\u4e0a\u7ebf\u540eRedis\u8bf7\u6c42\u91cf<\/span><\/section>\n
<\/section>\n
\u4e0a\u7ebf\u540eRedis\u6d41\u91cf\u7ffb\u500d\u95ee\u9898\u5f97\u5230\u89e3\u51b3\uff0cRedis\u6700\u5927\u54cd\u5e94\u65f6\u95f4\u7a81\u523a\u6709\u6240\u7f13\u89e3\uff0c\u4f46\u4f9d\u65e7\u6ca1\u80fd\u5f7b\u5e95\u89e3\u51b3\uff0c\u8bf4\u660e\u5927\u6d41\u91cf\u67e5\u8be2\u4e0d\u662f\u6700\u6839\u672c\u7684\u539f\u56e0\u3002<\/section>\n
<\/section>\n
<\/div><\/span><\/p>\n<\/section>\n
Redis\u6700\u5927\u54cd\u5e94\u65f6\u95f4\uff08\u4e0a\u7ebf\u524d\uff09<\/span><\/section>\n
<\/section>\n
<\/div><\/span><\/p>\n<\/section>\n
Redis\u6700\u5927\u54cd\u5e94\u65f6\u95f4\uff08\u4e0a\u7ebf\u540e\uff09<\/span><\/section>\n
<\/section>\n
4.2 Redis\u6269\u5bb9<\/strong><\/section>\n
<\/section>\n
\u5728Redis\u5f02\u5e38\u6d41\u91cf\u95ee\u9898\u89e3\u51b3\u540e\uff0c\u95ee\u9898\u5e76\u672a\u5f97\u5230\u5f7b\u5e95\u89e3\u51b3\uff0c\u6b64\u65f6\u80fd\u505a\u7684\u5c31\u662f\u9759\u4e0b\u5fc3\u6765\uff0c\u4ed4\u7ec6\u53bb\u68b3\u7406\u5bfc\u81f4Redis\u6162\u7684\u539f\u56e0\uff0c\u601d\u8def\u4e3b\u8981\u4ece\u4ee5\u4e0b\u4e09\u4e2a\u65b9\u9762\uff1a<\/section>\n
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\n
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    \n
  • \n

    \u51fa\u73b0\u4e86\u6162\u67e5\u8be2<\/p>\n<\/li>\n

  • \n

    Redis\u670d\u52a1\u51fa\u73b0\u6027\u80fd\u74f6\u9888<\/p>\n<\/li>\n

  • \n

    \u5ba2\u6237\u7aef\u914d\u7f6e\u4e0d\u5408\u7406<\/p>\n<\/li>\n<\/ul>\n<\/section>\n<\/section>\n

     <\/p>\n

    \u57fa\u4e8e\u4ee5\u4e0a\u601d\u8def\uff0c\u4e00\u4e2a\u4e2a\u7684\u8fdb\u884c\u6392\u67e5\uff1b\u67e5\u8be2Redis\u6162\u67e5\u8be2\u65e5\u5fd7\uff0c\u672a\u53d1\u73b0\u6162\u67e5\u8be2\u3002<\/section>\n
    <\/section>\n
    \u501f\u7528\u8c03\u7528\u94fe\u5e73\u53f0\u8be6\u7ec6\u5206\u6790\u6162\u7684Redis\u547d\u4ee4\uff0c\u6ca1\u6709\u4e86\u5927\u6d41\u91cf\u5bfc\u81f4\u7684\u6162\u67e5\u8be2\u7684\u5e72\u6270\uff0c\u95ee\u9898\u5b9a\u4f4d\u6d41\u7a0b\u5f88\u5feb\uff0c\u5927\u91cf\u7684\u8017\u65f6\u8bf7\u6c42\u5728setex\u65b9\u6cd5\u4e0a\uff0c\u5076\u5c14\u51fa\u73b0\u67e5\u8be2\u7684\u6162\u8bf7\u6c42\u4e5f\u90fd\u662f\u5728setex\u65b9\u6cd5\u4e4b\u540e\uff0c\u6839\u636eRedis\u5355\u7ebf\u7a0b\u7684\u7279\u6027\u5224\u65adsetex\u662fRedis99\u7ebf\u7a81\u523a\u7684\u5143\u51f6\u3002\u627e\u5230\u5177\u4f53\u8bed\u53e5\uff0c\u5b9a\u4f4d\u5230\u5177\u4f53\u4e1a\u52a1\u540e\uff0c\u9996\u5148\u7533\u8bf7\u6269\u5bb9Redis\uff0c\u75316\u4e2aMaster\u6269\u52308\u4e2aMaster\u3002<\/section>\n
    <\/section>\n
    <\/div><\/span><\/p>\n<\/section>\n
    <\/div><\/span><\/p>\n<\/section>\n
    <\/div><\/span><\/p>\n<\/section>\n
    Redis\u6269\u5bb9\u524d<\/span><\/section>\n
    <\/section>\n
    <\/div><\/span><\/p>\n<\/section>\n
    Redis\u6269\u5bb9\u540e<\/span><\/section>\n
    <\/section>\n
    \u4ece\u7ed3\u679c\u4e0a\u770b\uff0c\u6269\u5bb9\u57fa\u672c\u4e0a\u6ca1\u6709\u6548\u679c\uff0c\u8bf4\u660eRedis\u670d\u52a1\u672c\u8eab\u4e0d\u662f\u6027\u80fd\u74f6\u9888\u70b9\uff0c\u6b64\u65f6\u5269\u4e0b\u7684\u4e00\u4e2a\u5c31\u662f\u5ba2\u6237\u7aef\u76f8\u5173\u914d\u7f6e\u4e86\u3002<\/section>\n
    <\/section>\n
    4.3 \u5ba2\u6237\u7aef\u53c2\u6570\u4f18\u5316<\/strong><\/section>\n
    <\/section>\n
    4.3.1 \u8fde\u63a5\u6c60\u4f18\u5316<\/strong><\/span><\/section>\n
    <\/section>\n
    Redis\u6269\u5bb9\u6ca1\u6709\u6548\u679c\uff0c\u9488\u5bf9\u5ba2\u6237\u7aef\u53ef\u80fd\u51fa\u73b0\u7684\u95ee\u9898\uff0c\u6b64\u65f6\u6000\u7591\u7684\u70b9\u6709\u4e24\u4e2a\u65b9\u5411\u3002<\/section>\n
    \u7b2c\u4e00\u4e2a\u662f\u5ba2\u6237\u7aef\u5728\u5904\u7406Redis\u96c6\u7fa4\u6a21\u5f0f\u65f6\uff0c\u5bf9\u8fde\u63a5\u7684\u7ba1\u7406\u4e0a\u5b58\u5728BUG\uff0c\u7b2c\u4e8c\u4e2a\u662f\u8fde\u63a5\u6c60\u53c2\u6570\u8bbe\u7f6e\u4e0d\u5408\u7406\uff0c\u6b64\u65f6\u6e90\u7801\u5206\u6790\u548c\u8fde\u63a5\u6c60\u53c2\u6570\u8c03\u6574\u540c\u6b65\u8fdb\u884c\u3002<\/section>\n
    <\/section>\n
    4.3.1.1 \u5224\u65ad\u5ba2\u6237\u7aef\u8fde\u63a5\u7ba1\u7406\u4e0a\u662f\u5426\u6709BUG<\/section>\n
    <\/section>\n
    \u5728\u5206\u6790\u5b8c\uff0c\u5ba2\u6237\u7aef\u5904\u7406\u8fde\u63a5\u6c60\u7684\u6e90\u7801\u540e\uff0c\u6ca1\u6709\u95ee\u9898\uff0c\u8ddf\u9884\u60f3\u4e00\u81f4\uff0c\u6309\u7167\u69fd\u4f4d\u7f13\u5b58\u8fde\u63a5\u6c60\uff0c\u7b2c\u4e00\u4e2a\u5047\u8bbe\u88ab\u6392\u9664\uff0c\u6e90\u7801\u5982\u4e0b\uff1a<\/section>\n<\/section>\n<\/section>\n

    1\u3001setEx
    \npublic\u00a0String\u00a0setex(final\u00a0byte[]\u00a0key,\u00a0final\u00a0int\u00a0seconds,\u00a0final\u00a0byte[]\u00a0value)\u00a0{
    \nreturn<\/span>\u00a0new\u00a0JedisClusterCommand<String>(connectionHandler,\u00a0maxAttempts)\u00a0{
    \n@Override
    \npublic\u00a0String\u00a0execute(Jedis\u00a0connection)\u00a0{
    \nreturn<\/span>\u00a0connection.setex(key,\u00a0seconds,\u00a0value);
    \n}
    \n}.runBinary(key);
    \n}<\/p>\n

    2\u3001runBinary
    \npublic\u00a0T\u00a0runBinary(byte[]\u00a0key)\u00a0{
    \nif<\/span>\u00a0(key\u00a0==\u00a0null)\u00a0{
    \nthrow\u00a0new\u00a0JedisClusterException(“No\u00a0way\u00a0to\u00a0dispatch\u00a0this\u00a0command\u00a0to\u00a0Redis\u00a0Cluster.”<\/span>);
    \n}<\/p>\n

    return<\/span>\u00a0runWithRetries(key,\u00a0this.maxAttempts,\u00a0false<\/span>,\u00a0false<\/span>);
    \n}
    \n3\u3001runWithRetries
    \nprivate\u00a0T\u00a0runWithRetries(byte[]\u00a0key,\u00a0int\u00a0attempts,\u00a0boolean\u00a0tryRandomNode,\u00a0boolean\u00a0asking)\u00a0{
    \nif<\/span>\u00a0(attempts\u00a0<=\u00a00)\u00a0{
    \nthrow\u00a0new\u00a0JedisClusterMaxRedirectionsException(“Too\u00a0many\u00a0Cluster\u00a0redirections?”<\/span>);
    \n}<\/p>\n

    Jedis\u00a0connection\u00a0=\u00a0null;
    \ntry\u00a0{<\/p>\n

    if<\/span>\u00a0(asking)\u00a0{
    \n\/\/\u00a0TODO:\u00a0Pipeline\u00a0asking\u00a0with\u00a0the\u00a0original\u00a0command<\/span>\u00a0to\u00a0make\u00a0it
    \n\/\/\u00a0faster….
    \nconnection\u00a0=\u00a0askConnection.get();
    \nconnection.asking();<\/p>\n

    \/\/\u00a0if<\/span>\u00a0asking\u00a0success,\u00a0reset\u00a0asking\u00a0flag
    \nasking\u00a0=\u00a0false<\/span>;
    \n}\u00a0else<\/span>\u00a0{
    \nif<\/span>\u00a0(tryRandomNode)\u00a0{
    \nconnection\u00a0=\u00a0connectionHandler.getConnection();
    \n}\u00a0else<\/span>\u00a0{
    \nconnection\u00a0=\u00a0connectionHandler.getConnectionFromSlot(JedisClusterCRC16.getSlot(key));
    \n}
    \n}<\/p>\n

    return<\/span>\u00a0execute(connection);<\/p>\n

    }<\/p>\n

    4\u3001getConnectionFromSlot
    \npublic\u00a0Jedis\u00a0getConnectionFromSlot(int\u00a0slot)\u00a0{
    \nJedisPool\u00a0connectionPool\u00a0=\u00a0cache.getSlotPool(slot);
    \nif<\/span>\u00a0(connectionPool\u00a0!=\u00a0null)\u00a0{
    \n\/\/\u00a0It\u00a0can‘t\u00a0guaranteed\u00a0to\u00a0get\u00a0valid\u00a0connection\u00a0because\u00a0of\u00a0node
    \n\/\/\u00a0assignment
    \nreturn\u00a0connectionPool.getResource();
    \n}\u00a0else\u00a0{
    \nrenewSlotCache();\u00a0\/\/It’<\/span>s\u00a0abnormal\u00a0situation\u00a0for<\/span>\u00a0cluster\u00a0mode,\u00a0that\u00a0we\u00a0have\u00a0just\u00a0nothing\u00a0for<\/span>\u00a0slot,\u00a0try\u00a0to\u00a0rediscover\u00a0state
    \nconnectionPool\u00a0=\u00a0cache.getSlotPool(slot);
    \nif<\/span>\u00a0(connectionPool\u00a0!=\u00a0null)\u00a0{
    \nreturn<\/span>\u00a0connectionPool.getResource();
    \n}\u00a0else<\/span>\u00a0{
    \n\/\/no\u00a0choice,\u00a0fallback\u00a0to\u00a0new\u00a0connection\u00a0to\u00a0random\u00a0node
    \nreturn<\/span>\u00a0getConnection();
    \n}
    \n}
    \n}<\/p>\n

    <\/pre>\n
    \n
    \n
    <\/section>\n
    4.3.1.2 \u5206\u6790\u8fde\u63a5\u6c60\u53c2\u6570<\/section>\n
    <\/section>\n
    \u901a\u8fc7\u8ddf\u4e2d\u95f4\u4ef6\u56e2\u961f\u6c9f\u901a\uff0c\u4ee5\u53ca\u53c2\u8003commons-pool2\u5b98\u65b9\u6587\u6863\u4fee\u6539\u5982\u4e0b\uff1a<\/section>\n
    <\/section>\n
    <\/div><\/p>\n<\/section>\n
    <\/section>\n
    \u53c2\u6570\u8c03\u6574\u540e\uff0c1S\u4ee5\u4e0a\u7684\u8bf7\u6c42\u91cf\u5f97\u5230\u51cf\u5c11\uff0c\u4f46\u8fd8\u662f\u5b58\u5728\uff0c\u4e0a\u6e38\u53cd\u9988\u964d\u7ea7\u91cf\u7531\u6bcf\u592990\u4e07\u5de6\u53f3\u964d\u5230\u6bcf\u59296W\u4e2a\uff08\u5173\u4e8emaxWaitMillis\u8bbe\u7f6e\u4e3a200MS\u540e\u4e3a\u4ec0\u4e48\u8fd8\u4f1a\u6709\u8d85\u8fc7200MS\u7684\u8bf7\u6c42\uff0c\u4e0b\u6587\u6709\u89e3\u91ca\uff09\u3002<\/section>\n
    <\/section>\n
    <\/div><\/span><\/p>\n<\/section>\n
    \u53c2\u6570\u4f18\u5316\u540eReds\u6700\u5927\u54cd\u5e94\u65f6\u95f4<\/span><\/section>\n
    <\/section>\n
    <\/div><\/span><\/p>\n<\/section>\n
    \u53c2\u6570\u4f18\u5316\u540e\u63a5\u53e3\u62a5\u9519\u91cf<\/span><\/section>\n
    <\/section>\n
    4.3.2 \u6301\u7eed\u4f18\u5316<\/strong><\/span><\/section>\n
    <\/section>\n
    \u4f18\u5316\u4e0d\u80fd\u505c\u6b62\uff0c\u5982\u4f55\u628aRedis\u7684\u6240\u6709\u5199\u5165\u8bf7\u6c42\u964d\u4f4e\u5230200MS\u4ee5\u5185\uff0c\u6b64\u65f6\u7684\u4f18\u5316\u601d\u8def\u8fd8\u662f\u8c03\u6574\u5ba2\u6237\u7aef\u914d\u7f6e\u53c2\u6570\uff0c\u5206\u6790Jedis\u83b7\u53d6\u8fde\u63a5\u76f8\u5173\u6e90\u7801\u3002<\/section>\n
    <\/section>\n
    Jedis\u83b7\u53d6\u8fde\u63a5\u6e90\u7801\uff1a<\/section>\n<\/section>\n<\/section>\n
    public\u00a0T\u00a0borrowObject(final\u00a0long\u00a0borrowMaxWaitMillis)\u00a0throws\u00a0Exception\u00a0{
    \nassertOpen();<\/p>\n
    final\u00a0AbandonedConfig\u00a0ac\u00a0=\u00a0this.abandonedConfig;
    \nif<\/span>\u00a0(ac\u00a0!=\u00a0null\u00a0&&\u00a0ac.getRemoveAbandonedOnBorrow()\u00a0&&
    \n(getNumIdle()\u00a0<\u00a02)\u00a0&&
    \n(getNumActive()\u00a0>\u00a0getMaxTotal()\u00a0–\u00a03)\u00a0)\u00a0{
    \nremoveAbandoned(ac);
    \n}<\/p>\n
    PooledObject<T>\u00a0p\u00a0=\u00a0null;<\/p>\n
    \/\/\u00a0Get\u00a0local<\/span>\u00a0copy\u00a0of\u00a0current\u00a0config\u00a0so\u00a0it\u00a0is\u00a0consistent\u00a0for<\/span>\u00a0entire
    \n\/\/\u00a0method\u00a0execution
    \nfinal\u00a0boolean\u00a0blockWhenExhausted\u00a0=\u00a0getBlockWhenExhausted();<\/p>\n
    boolean\u00a0create;
    \nfinal\u00a0long\u00a0waitTime\u00a0=\u00a0System.currentTimeMillis();<\/p>\n
    while<\/span>\u00a0(p\u00a0==\u00a0null)\u00a0{
    \ncreate\u00a0=\u00a0false<\/span>;
    \np\u00a0=\u00a0idleObjects.pollFirst();
    \nif<\/span>\u00a0(p\u00a0==\u00a0null)\u00a0{
    \np\u00a0=\u00a0create();
    \nif<\/span>\u00a0(p\u00a0!=\u00a0null)\u00a0{
    \ncreate\u00a0=\u00a0true<\/span>;
    \n}
    \n}
    \nif<\/span>\u00a0(blockWhenExhausted)\u00a0{
    \nif<\/span>\u00a0(p\u00a0==\u00a0null)\u00a0{
    \nif<\/span>\u00a0(borrowMaxWaitMillis\u00a0<\u00a00)\u00a0{
    \np\u00a0=\u00a0idleObjects.takeFirst();
    \n}\u00a0else<\/span>\u00a0{
    \np\u00a0=\u00a0idleObjects.pollFirst(borrowMaxWaitMillis,
    \nTimeUnit.MILLISECONDS);
    \n}
    \n}
    \nif<\/span>\u00a0(p\u00a0==\u00a0null)\u00a0{
    \nthrow\u00a0new\u00a0NoSuchElementException(
    \n“Timeout\u00a0waiting\u00a0for\u00a0idle\u00a0object”<\/span>);
    \n}
    \n}\u00a0else<\/span>\u00a0{
    \nif<\/span>\u00a0(p\u00a0==\u00a0null)\u00a0{
    \nthrow\u00a0new\u00a0NoSuchElementException(“Pool\u00a0exhausted”<\/span>);
    \n}
    \n}
    \nif<\/span>\u00a0(!p.allocate())\u00a0{
    \np\u00a0=\u00a0null;
    \n}<\/p>\n
    if<\/span>\u00a0(p\u00a0!=\u00a0null)\u00a0{
    \ntry\u00a0{
    \nfactory.activateObject(p);
    \n}\u00a0catch\u00a0(final\u00a0Exception\u00a0e)\u00a0{
    \ntry\u00a0{
    \ndestroy(p);
    \n}\u00a0catch\u00a0(final\u00a0Exception\u00a0e1)\u00a0{
    \n\/\/\u00a0Ignore\u00a0–\u00a0activation\u00a0failure\u00a0is\u00a0more\u00a0important
    \n}
    \np\u00a0=\u00a0null;
    \nif<\/span>\u00a0(create)\u00a0{
    \nfinal\u00a0NoSuchElementException\u00a0nsee\u00a0=\u00a0new\u00a0NoSuchElementException(
    \n“Unable\u00a0to\u00a0activate\u00a0object”<\/span>);
    \nnsee.initCause(e);
    \nthrow\u00a0nsee;
    \n}
    \n}
    \nif<\/span>\u00a0(p\u00a0!=\u00a0null\u00a0&&\u00a0(getTestOnBorrow()\u00a0||\u00a0create\u00a0&&\u00a0getTestOnCreate()))\u00a0{
    \nboolean\u00a0validate\u00a0=\u00a0false<\/span>;
    \nThrowable\u00a0validationThrowable\u00a0=\u00a0null;
    \ntry\u00a0{
    \nvalidate\u00a0=\u00a0factory.validateObject(p);
    \n}\u00a0catch\u00a0(final\u00a0Throwable\u00a0t)\u00a0{
    \nPoolUtils.checkRethrow(t);
    \nvalidationThrowable\u00a0=\u00a0t;
    \n}
    \nif<\/span>\u00a0(!validate)\u00a0{
    \ntry\u00a0{
    \ndestroy(p);
    \ndestroyedByBorrowValidationCount.incrementAndGet();
    \n}\u00a0catch\u00a0(final\u00a0Exception\u00a0e)\u00a0{
    \n\/\/\u00a0Ignore\u00a0–\u00a0validation\u00a0failure\u00a0is\u00a0more\u00a0important
    \n}
    \np\u00a0=\u00a0null;
    \nif<\/span>\u00a0(create)\u00a0{
    \nfinal\u00a0NoSuchElementException\u00a0nsee\u00a0=\u00a0new\u00a0NoSuchElementException(
    \n“Unable\u00a0to\u00a0validate\u00a0object”<\/span>);
    \nnsee.initCause(validationThrowable);
    \nthrow\u00a0nsee;
    \n}
    \n}
    \n}
    \n}
    \n}<\/p>\n
    updateStatsBorrow(p,\u00a0System.currentTimeMillis()\u00a0–\u00a0waitTime);<\/p>\n
    return<\/span>\u00a0p.getObject();
    \n}<\/p>\n
    <\/pre>\n
    \n
    \n
    \u83b7\u53d6\u8fde\u63a5\u7684\u5927\u81f4\u6d41\u7a0b\u5982\u4e0b\uff1a<\/section>\n
    <\/section>\n
    \n
    \n
      \n
    1. \n
      \u662f\u5426\u6709\u7a7a\u95f2\u8fde\u63a5\uff0c\u6709\u7a7a\u95f2\u8fde\u63a5\u5c31\u76f4\u63a5\u8fd4\u56de\uff0c\u6ca1\u6709\u5c31\u521b\u5efa\u3002<\/span><\/p>\n<\/li>\n
    2. \n
      \u521b\u5efa\u65f6\u5982\u679c\u8d85\u51fa\u6700\u5927\u8fde\u63a5\u6570\uff0c\u5219\u5224\u65ad\u662f\u5426\u6709\u5176\u4ed6\u7ebf\u7a0b\u5728\u521b\u5efa\u8fde\u63a5\uff0c\u5982\u679c\u6ca1\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u5982\u679c\u6709\u5219\u7b49\u5f85maxWaitMis\u65f6\u95f4\uff08\u5176\u4ed6\u7ebf\u7a0b\u53ef\u80fd\u521b\u5efa\u5931\u8d25\uff09\uff0c\u5982\u679c\u672a\u8d85\u51fa\u6700\u5927\u8fde\u63a5\uff0c\u5219\u6267\u884c\u521b\u5efa\u8fde\u63a5\u64cd\u4f5c\uff08\u6b64\u65f6\u83b7\u53d6\u8fde\u63a5\u7b49\u5f85\u65f6\u95f4\u53ef\u80fd\u4f1a\u5927\u4e8emaxWaitMs\uff09\u3002<\/span><\/p>\n<\/li>\n
    3. \n
      \u5982\u679c\u521b\u5efa\u4e0d\u6210\u529f\uff0c\u5219\u5224\u65ad\u662f\u5426\u662f\u963b\u585e\u83b7\u53d6\u8fde\u63a5\uff0c\u5982\u679c\u4e0d\u662f\u5219\u76f4\u63a5\u629b\u51fa\u5f02\u5e38\uff0c\u8fde\u63a5\u6c60\u4e0d\u591f\u7528\uff0c\u5982\u679c\u662f\u5219\u5224\u65admaxWaitMillis\u662f\u5426\u5c0f\u4e8e0\uff0c\u5982\u679c\u5c0f\u4e8e0\u5219\u963b\u585e\u7b49\u5f85\uff0c\u5982\u679c\u5927\u4e8e0\u5219\u963b\u585e\u7b49\u5f85maxWaitMillis\u3002<\/span><\/p>\n<\/li>\n
    4. \n
      \u540e\u7eed\u5c31\u662f\u6839\u636e\u53c2\u6570\u6765\u5224\u65ad\u662f\u5426\u9700\u8981\u505a\u8fde\u63a5check\u7b49\u3002<\/span><\/p>\n<\/li>\n<\/ol>\n<\/section>\n<\/section>\n
       <\/p>\n
      \u6839\u636e\u4ee5\u4e0a\u6d41\u7a0b\u5206\u6790\uff0cmaxWaitMills\u76ee\u524d\u8bbe\u7f6e\u7684\u4e3a200\uff0c\u4ee5\u4e0a\u6d41\u7a0b\u52a0\u8d77\u6765\u6700\u5927\u963b\u585e\u65f6\u95f4\u4e3a400MS\uff0c\u5927\u90e8\u5206\u60c5\u51b5\u4e3a200MS\uff0c\u4e0d\u5e94\u8be5\u51fa\u73b0\u8d85\u51fa400MS\u7684\u7a81\u523a\u3002<\/section>\n
      <\/section>\n
      \u6b64\u65f6\u95ee\u9898\u53ef\u80fd\u51fa\u73b0\u5728\u521b\u5efa\u8fde\u63a5\u4e0a\uff0c\u56e0\u4e3a\u521b\u5efa\u8fde\u63a5\u6bd4\u8f83\u8017\u65f6\uff0c\u4e14\u521b\u5efa\u65f6\u95f4\u4e0d\u5b9a\uff0c\u91cd\u70b9\u5206\u6790\u662f\u5426\u6709\u8fd9\u4e2a\u573a\u666f\uff0c\u901a\u8fc7DB\u540e\u53f0\u76d1\u63a7Redis\u8fde\u63a5\u60c5\u51b5\u3002<\/section>\n
      <\/section>\n
      <\/div><\/span><\/p>\n<\/section>\n
      DB\u540e\u53f0\u76d1\u63a7Redis\u670d\u52a1\u8fde\u63a5<\/span><\/section>\n
      <\/section>\n
      \u5206\u6790\u4e0a\u56fe\u53d1\u73b0\uff0c\u786e\u5b9e\u5728\u51e0\u4e2a\u65f6\u95f4\u70b9\uff089:00\uff0c12:00\uff0c19:00\u2026\u2026\uff09\uff0cRedis\u8fde\u63a5\u6570\u5b58\u5728\u4e0a\u6da8\u60c5\u51b5\uff0c\u8ddfRedis\u7a81\u523a\u65f6\u95f4\u57fa\u672c\u543b\u5408\u3002\u611f\u89c9\uff08\u4e4b\u524d\u7684\u5404\u79cd\u5c1d\u8bd5\u540e\uff0c\u5df2\u7ecf\u4e0d\u6562\u7528\u786e\u5b9a\u4e86\uff09\u95ee\u9898\u5230\u6b64\u5b9a\u4f4d\u6e05\u6670\uff08\u5728\u7a81\u589e\u6d41\u91cf\u8fc7\u6765\u65f6\uff0c\u8fde\u63a5\u6c60\u53ef\u7528\u8fde\u63a5\u6ee1\u8db3\u4e0d\u4e86\u9700\u6c42\uff0c\u4f1a\u521b\u5efa\u8fde\u63a5\uff0c\u9020\u6210\u8bf7\u6c42\u7b49\u5f85\uff09\u3002<\/section>\n
      <\/section>\n
      \u6b64\u65f6\u7684\u60f3\u6cd5\u662f\u5728\u670d\u52a1\u542f\u52a8\u65f6\u5c31\u8fdb\u884c\u8fde\u63a5\u6c60\u7684\u521b\u5efa\uff0c\u5c3d\u91cf\u51cf\u5c11\u65b0\u8fde\u63a5\u7684\u521b\u5efa\uff0c\u4fee\u6539\u8fde\u63a5\u6c60\u53c2\u6570vivo.cache.depend.common.poolConfig.minIdle\uff0c\u7ed3\u679c\u7adf\u7136\u65e0\u6548\uff1f<\/section>\n
      <\/section>\n
      \u5565\u90fd\u4e0d\u8bf4\u4e86\uff0c\u5f00\u59cb\u64b8\u6e90\u7801\uff0cJedis\u5e95\u5c42\u4f7f\u7528\u7684\u662fcommons-pool2\u6765\u7ba1\u7406\u8fde\u63a5\u7684\uff0c\u67e5\u770b\u9879\u76ee\u4e2d\u4f7f\u7528\u7684commons-pool2-2.6.2.jar\u90e8\u5206\u6e90\u7801\u3002<\/section>\n
      <\/section>\n
      CommonPool2\u6e90\u7801\uff1a<\/section>\n<\/section>\n<\/section>\n
      public\u00a0GenericObjectPool(final\u00a0PooledObjectFactory<T>\u00a0factory,
      \nfinal\u00a0GenericObjectPoolConfig<T>\u00a0config)\u00a0{<\/p>\n
      super(config,\u00a0ONAME_BASE,\u00a0config.getJmxNamePrefix());<\/p>\n
      if<\/span>\u00a0(factory\u00a0==\u00a0null)\u00a0{
      \njmxUnregister();\u00a0\/\/\u00a0tidy\u00a0up
      \nthrow\u00a0new\u00a0IllegalArgumentException(“factory\u00a0may\u00a0not\u00a0be\u00a0null”<\/span>);
      \n}
      \nthis.factory\u00a0=\u00a0factory;<\/p>\n
      idleObjects\u00a0=\u00a0new\u00a0LinkedBlockingDeque<>(config.getFairness());<\/p>\n
      setConfig(config);
      \n}<\/p>\n
      <\/pre>\n
      \n
      \n
      \u7adf\u7136\u53d1\u73b0\u6ca1\u6709\u521d\u59cb\u5316\u8fde\u63a5\u7684\u5730\u65b9\uff0c\u5f00\u59cb\u54a8\u8be2\u4e2d\u95f4\u4ef6\u56e2\u961f\uff0c\u4e2d\u95f4\u4ef6\u56e2\u961f\u7ed9\u51fa\u7684\u6e90\u7801\uff08commons-pool2-2.4.2.jar\uff09\u5982\u4e0b\uff0c\u65b9\u6cd5\u6267\u884c\u540e\u591a\u4e86\u4e00\u6b21startEvictor\u65b9\u6cd5\u7684\u8c03\u7528\uff1f<\/section>\n
      <\/section>\n
      CommonPool2\u6e90\u7801\uff1a<\/section>\n<\/section>\n<\/section>\n
      1\u3001\u521d\u59cb\u5316\u8fde\u63a5\u6c60
      \npublic\u00a0GenericObjectPool(PooledObjectFactory<T>\u00a0factory,
      \nGenericObjectPoolConfig\u00a0config)\u00a0{
      \nsuper(config,\u00a0ONAME_BASE,\u00a0config.getJmxNamePrefix());
      \nif<\/span>\u00a0(factory\u00a0==\u00a0null)\u00a0{
      \njmxUnregister();\u00a0\/\/\u00a0tidy\u00a0up
      \nthrow\u00a0new\u00a0IllegalArgumentException(“factory\u00a0may\u00a0not\u00a0be\u00a0null”<\/span>);
      \n}
      \nthis.factory\u00a0=\u00a0factory;
      \nidleObjects\u00a0=\u00a0new\u00a0LinkedBlockingDeque<PooledObject<T>>(config.getFairness());
      \nsetConfig(config);
      \nstartEvictor(getTimeBetweenEvictionRunsMillis());
      \n}<\/p>\n
      <\/pre>\n
      \n
      \n
      \u4e3a\u5565\u4e0d\u4e00\u6837\uff1f\u5f00\u59cb\u68c0\u67e5Jar\u5305\uff0c\u7248\u672c\u4e0d\u4e00\u6837\uff0c\u4e2d\u95f4\u4ef6\u7ed9\u51fa\u7684\u7248\u672c\u662f\u5728V2.4.2\uff0c\u9879\u76ee\u5b9e\u9645\u4f7f\u7528\u7684\u662fV2.6.2\uff0c\u5206\u6790startEvictor\u6709\u4e00\u6b65\u903b\u8f91\u6b63\u662f\u5904\u7406\u8fde\u63a5\u6c60\u9884\u70ed\u903b\u8f91\u3002<\/section>\n
      <\/section>\n
      Jedis\u8fde\u63a5\u6c60\u9884\u70ed\uff1a<\/section>\n<\/section>\n<\/section>\n
      1\u3001final\u00a0void\u00a0startEvictor(long\u00a0delay)\u00a0{
      \nsynchronized\u00a0(evictionLock)\u00a0{
      \nif<\/span>\u00a0(null\u00a0!=\u00a0evictor)\u00a0{
      \nEvictionTimer.cancel(evictor);
      \nevictor\u00a0=\u00a0null;
      \nevictionIterator\u00a0=\u00a0null;
      \n}
      \nif<\/span>\u00a0(delay\u00a0>\u00a00)\u00a0{
      \nevictor\u00a0=\u00a0new\u00a0Evictor();
      \nEvictionTimer.schedule(evictor,\u00a0delay,\u00a0delay);
      \n}
      \n}
      \n}
      \n2\u3001class\u00a0Evictor\u00a0extends\u00a0TimerTask\u00a0{
      \n\/**
      \n*\u00a0Run\u00a0pool\u00a0maintenance.\u00a0\u00a0Evict\u00a0objects\u00a0qualifying\u00a0for<\/span>\u00a0eviction\u00a0and\u00a0then<\/span>
      \n*\u00a0ensure\u00a0that\u00a0the\u00a0minimum\u00a0number\u00a0of\u00a0idle\u00a0instances\u00a0are\u00a0available.
      \n*\u00a0Since\u00a0the\u00a0Timer\u00a0that\u00a0invokes\u00a0Evictors\u00a0is\u00a0shared\u00a0for<\/span>\u00a0all\u00a0Pools\u00a0but
      \n*\u00a0pools\u00a0may\u00a0exist\u00a0in<\/span>\u00a0different\u00a0class\u00a0loaders,\u00a0the\u00a0Evictor\u00a0ensures\u00a0that
      \n*\u00a0any\u00a0actions\u00a0taken\u00a0are\u00a0under\u00a0the\u00a0class\u00a0loader\u00a0of\u00a0the\u00a0factory
      \n*\u00a0associated\u00a0with\u00a0the\u00a0pool.
      \n*\/
      \n@Override
      \npublic\u00a0void\u00a0run<\/span><\/span>()\u00a0{
      \nClassLoader\u00a0savedClassLoader\u00a0=
      \nThread.currentThread().getContextClassLoader();
      \ntry\u00a0{
      \nif<\/span>\u00a0(factoryClassLoader\u00a0!=\u00a0null)\u00a0{
      \n\/\/\u00a0Set\u00a0the\u00a0class\u00a0loader\u00a0for<\/span>\u00a0the\u00a0factory
      \nClassLoader\u00a0cl\u00a0=\u00a0factoryClassLoader.get();
      \nif<\/span>\u00a0(cl\u00a0==\u00a0null)\u00a0{
      \n\/\/\u00a0The\u00a0pool\u00a0has\u00a0been\u00a0dereferenced\u00a0and\u00a0the\u00a0class\u00a0loader
      \n\/\/\u00a0GC‘d.\u00a0Cancel\u00a0this\u00a0timer\u00a0so\u00a0the\u00a0pool\u00a0can\u00a0be\u00a0GC’<\/span>d\u00a0as
      \n\/\/\u00a0well.
      \ncancel();
      \nreturn<\/span>;
      \n}
      \nThread.currentThread().setContextClassLoader(cl);
      \n}<\/p>\n
      \/\/\u00a0Evict\u00a0from\u00a0the\u00a0pool
      \ntry\u00a0{
      \nevict();
      \n}\u00a0catch(Exception\u00a0e)\u00a0{
      \nswallowException(e);
      \n}\u00a0catch(OutOfMemoryError\u00a0oome)\u00a0{
      \n\/\/\u00a0Log\u00a0problem\u00a0but\u00a0give\u00a0evictor\u00a0thread\u00a0a\u00a0chance\u00a0to\u00a0continue<\/span>
      \n\/\/\u00a0in<\/span>\u00a0case<\/span>\u00a0error\u00a0is\u00a0recoverable
      \noome.printStackTrace(System.err);
      \n}
      \n\/\/\u00a0Re-create\u00a0idle\u00a0instances.
      \ntry\u00a0{
      \nensureMinIdle();
      \n}\u00a0catch\u00a0(Exception\u00a0e)\u00a0{
      \nswallowException(e);
      \n}
      \n}\u00a0finally\u00a0{
      \n\/\/\u00a0Restore\u00a0the\u00a0previous\u00a0CCL
      \nThread.currentThread().setContextClassLoader(savedClassLoader);
      \n}
      \n}
      \n}
      \n3\u3001\u00a0void\u00a0ensureMinIdle()\u00a0throws\u00a0Exception\u00a0{
      \nensureIdle(getMinIdle(),\u00a0true<\/span>);
      \n}
      \n4\u3001\u00a0private\u00a0void\u00a0ensureIdle(int\u00a0idleCount,\u00a0boolean\u00a0always)\u00a0throws\u00a0Exception\u00a0{
      \nif<\/span>\u00a0(idleCount\u00a0<\u00a01\u00a0||\u00a0isClosed()\u00a0||\u00a0(!always\u00a0&&\u00a0!idleObjects.hasTakeWaiters()))\u00a0{
      \nreturn<\/span>;
      \n}<\/p>\n
      while<\/span>\u00a0(idleObjects.size()\u00a0<\u00a0idleCount)\u00a0{
      \nPooledObject<T>\u00a0p\u00a0=\u00a0create();
      \nif<\/span>\u00a0(p\u00a0==\u00a0null)\u00a0{
      \n\/\/\u00a0Can‘t\u00a0create\u00a0objects,\u00a0no\u00a0reason\u00a0to\u00a0think\u00a0another\u00a0call\u00a0to
      \n\/\/\u00a0create\u00a0will\u00a0work.\u00a0Give\u00a0up.
      \nbreak;
      \n}
      \nif\u00a0(getLifo())\u00a0{
      \nidleObjects.addFirst(p);
      \n}\u00a0else\u00a0{
      \nidleObjects.addLast(p);
      \n}
      \n}
      \nif\u00a0(isClosed())\u00a0{
      \n\/\/\u00a0Pool\u00a0closed\u00a0while\u00a0object\u00a0was\u00a0being\u00a0added\u00a0to\u00a0idle\u00a0objects.
      \n\/\/\u00a0Make\u00a0sure\u00a0the\u00a0returned\u00a0object\u00a0is\u00a0destroyed\u00a0rather\u00a0than\u00a0left
      \n\/\/\u00a0in\u00a0the\u00a0idle\u00a0object\u00a0pool\u00a0(which\u00a0would\u00a0effectively\u00a0be\u00a0a\u00a0leak)
      \nclear();
      \n}
      \n}<\/span><\/p>\n
      <\/pre>\n
      \n
      \n
      \u4fee\u6539Jar\u7248\u672c\uff0c\u914d\u7f6e\u4e2d\u5fc3\u589e\u52a0vivo.cache.depend.common.poolConfig.timeBetweenEvictionRunsMillis\uff08\u68c0\u67e5\u4e00\u6b21\u8fde\u63a5\u6c60\u4e2d\u7a7a\u95f2\u7684\u8fde\u63a5\uff0c\u628a\u7a7a\u95f2\u65f6\u95f4\u8d85\u8fc7minEvictableIdleTimeMillis\u6beb\u79d2\u7684\u8fde\u63a5\u65ad\u5f00\uff0c\u76f4\u5230\u8fde\u63a5\u6c60\u4e2d\u7684\u8fde\u63a5\u6570\u5230minIdle\u4e3a\u6b62\uff09\uff0cvivo.cache.depend.common.poolConfig.minEvictableIdleTimeMillis\uff08\u8fde\u63a5\u6c60\u4e2d\u8fde\u63a5\u53ef\u7a7a\u95f2\u7684\u65f6\u95f4\uff0c\u6beb\u79d2\uff09\u4e24\u4e2a\u53c2\u6570\uff0c\u91cd\u542f\u670d\u52a1\u540e\uff0c\u8fde\u63a5\u6c60\u6b63\u5e38\u9884\u70ed\uff0c\u6700\u7ec8\u4eceRedis\u5c42\u9762\u4e0a\u89e3\u51b3\u95ee\u9898\u3002<\/section>\n
      <\/section>\n
      \u4f18\u5316\u7ed3\u679c\u5982\u4e0b\uff0c\u6027\u80fd\u95ee\u9898\u57fa\u672c\u5f97\u5230\u89e3\u51b3\u3002<\/section>\n
      <\/section>\n
      <\/div><\/span><\/p>\n<\/section>\n
      Redis\u54cd\u5e94\u65f6\u95f4\uff08\u4f18\u5316\u524d\uff09<\/span><\/section>\n
      <\/section>\n
      <\/div><\/span><\/p>\n<\/section>\n
      Redis\u54cd\u5e94\u65f6\u95f4\uff08\u4f18\u5316\u540e\uff09<\/span><\/section>\n
      <\/section>\n
      <\/div><\/span><\/p>\n<\/section>\n
      \u63a5\u53e399\u7ebf\uff08\u4f18\u5316\u524d\uff09<\/span><\/section>\n
      <\/section>\n
      <\/div><\/span><\/p>\n<\/section>\n
      \u63a5\u53e399\u7ebf\uff08\u4f18\u5316\u540e\uff09<\/span><\/section>\n<\/section>\n<\/section>\n
       <\/p>\n
      \n
      \u4e94\u3001\u603b\u7ed3<\/section>\n
      <\/div><\/p>\n
       <\/p>\n<\/section>\n
      \n
      \n
      \u51fa\u73b0\u7ebf\u4e0a\u95ee\u9898\u65f6\uff0c\u9996\u5148\u8981\u8003\u8651\u7684\u8fd8\u662f\u5feb\u901f\u6062\u590d\u7ebf\u4e0a\u4e1a\u52a1\uff0c\u5c06\u4e1a\u52a1\u7684\u5f71\u54cd\u5ea6\u964d\u5230\u6700\u4f4e\uff0c\u6240\u4ee5\u9488\u5bf9\u7ebf\u4e0a\u7684\u4e1a\u52a1\uff0c\u8981\u63d0\u524d\u505a\u597d\u9650\u6d41\u3001\u7194\u65ad\u3001\u964d\u7ea7\u7b49\u7b56\u7565\uff0c\u5728\u7ebf\u4e0a\u51fa\u73b0\u95ee\u9898\u65f6\u80fd\u5feb\u901f\u627e\u5230\u6062\u590d\u65b9\u6848\u3002\u5bf9\u516c\u53f8\u5404\u76d1\u63a7\u5e73\u53f0\u7684\u719f\u7ec3\u4f7f\u7528\u7a0b\u5ea6\uff0c\u51b3\u5b9a\u4e86\u5b9a\u4f4d\u95ee\u9898\u7684\u901f\u5ea6\uff0c\u6bcf\u4e2a\u5f00\u53d1\u90fd\u8981\u628a\u719f\u7ec3\u4f7f\u7528\u76d1\u63a7\u5e73\u53f0\uff08\u673a\u5668\u3001\u670d\u52a1\u3001\u63a5\u53e3\u3001DB\u7b49\uff09\u4f5c\u4e3a\u4e00\u4e2a\u57fa\u672c\u80fd\u529b\u3002<\/section>\n
      <\/section>\n
      Redis\u51fa\u73b0\u54cd\u5e94\u6162\u65f6\uff0c\u53ef\u4ee5\u4f18\u5148\u4eceRedis\u96c6\u7fa4\u670d\u52a1\u7aef\uff08\u673a\u5668\u8d1f\u8f7d\u3001\u670d\u52a1\u662f\u5426\u6709\u6162\u67e5\u8be2\uff09\u3001\u4e1a\u52a1\u4ee3\u7801\uff08\u662f\u5426\u6709BUG\uff09\u3001\u5ba2\u6237\u7aef\uff08\u8fde\u63a5\u6c60\u914d\u7f6e\u662f\u5426\u5408\u7406\uff09\u4e09\u4e2a\u65b9\u9762\u53bb\u6392\u67e5\uff0c\u57fa\u672c\u4e0a\u80fd\u6392\u67e5\u51fa\u5927\u90e8\u5206Redis\u6162\u54cd\u5e94\u95ee\u9898\u3002<\/section>\n
      <\/section>\n
      Redis\u8fde\u63a5\u6c60\u5728\u7cfb\u7edf\u51b7\u542f\u52a8\u65f6\uff0c\u5bf9\u8fde\u63a5\u6c60\u7684\u9884\u70ed\uff0c\u4e0d\u540ccommons-pool2\u7684\u7248\u672c\uff0c\u51b7\u542f\u52a8\u7684\u7b56\u7565\u4e5f\u4e0d\u540c\uff0c\u4f46\u90fd\u9700\u8981\u914d\u7f6eminEvictableIdleTimeMillis\u53c2\u6570\u624d\u4f1a\u751f\u6548\uff0c\u53ef\u4ee5\u770b\u4e0bcommon-pool2\u5b98\u65b9\u6587\u6863\uff0c\u5bf9\u5e38\u7528\u53c2\u6570\u90fd\u505a\u5230\u5fc3\u4e2d\u6709\u6570\uff0c\u5728\u95ee\u9898\u51fa\u73b0\u65f6\u80fd\u5feb\u901f\u5b9a\u4f4d\u3002<\/section>\n
      <\/section>\n
      \u8fde\u63a5\u6c60\u9ed8\u8ba4\u53c2\u6570\u5728\u89e3\u51b3\u5927\u6d41\u91cf\u7684\u4e1a\u52a1\u4e0a\u7a0d\u663e\u4e4f\u529b\uff0c\u9700\u8981\u9488\u5bf9\u5927\u6d41\u91cf\u573a\u666f\u8fdb\u884c\u8c03\u4f18\u5904\u7406\uff0c\u5982\u679c\u4e1a\u52a1\u4e0a\u6d41\u91cf\u4e0d\u662f\u5f88\u5927\u76f4\u63a5\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u5373\u53ef\u3002<\/section>\n
      <\/section>\n
      \u5177\u4f53\u95ee\u9898\u8981\u5177\u4f53\u5206\u6790\uff0c\u4e0d\u80fd\u89e3\u51b3\u95ee\u9898\u7684\u65f6\u5019\u8981\u53d8\u901a\u601d\u8def\uff0c\u901a\u8fc7\u5404\u79cd\u65b9\u6cd5\u53bb\u5c1d\u8bd5\u89e3\u51b3\u95ee\u9898\u3002<\/section>\n<\/section>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
      \u4e00\u3001\u80cc\u666f   \u67d0\u4e00\u65e5\u6536\u5230\u4e0a\u6e38\u8c03\u7528\u65b9\u7684\u53cd\u9988\uff0c\u63d0\u4f9b\u7684\u67d0\u4e00\u4e2aDubbo\u63a5\u53e3\uff0c\u6bcf\u5929\u5728\u56fa\u5b9a\u7684\u65f6\u95f4\u70b9\u88ab\u77ed\u65f6\u95f4\u7194\u65ad […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-2957","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/2957","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2957"}],"version-history":[{"count":1,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/2957\/revisions"}],"predecessor-version":[{"id":3001,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/2957\/revisions\/3001"}],"wp:attachment":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}