{"id":43463,"date":"2024-12-01T10:08:12","date_gmt":"2024-12-01T02:08:12","guid":{"rendered":"https:\/\/fwq.ai\/blog\/43463\/"},"modified":"2024-12-01T10:08:12","modified_gmt":"2024-12-01T02:08:12","slug":"redis%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e5%a6%82%e4%bd%95%e8%87%aa%e5%8a%a8%e7%bb%ad%e6%9c%9f%e7%9a%84%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/43463\/","title":{"rendered":"Redis\u5206\u5e03\u5f0f\u9501\u5982\u4f55\u81ea\u52a8\u7eed\u671f\u7684\u5b9e\u73b0"},"content":{"rendered":"

<\/b> <\/p>\n

Redis\u5206\u5e03\u5f0f\u9501\u5982\u4f55\u81ea\u52a8\u7eed\u671f\u7684\u5b9e\u73b0<\/h1>\n

<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5728\u6570\u636e\u5e93\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929golang\u5b66\u4e60\u7f51\u5c31\u6574\u7406\u5206\u4eab\u300aRedis\u5206\u5e03\u5f0f\u9501\u5982\u4f55\u81ea\u52a8\u7eed\u671f\u7684\u5b9e\u73b0\u300b\uff0c\u804a\u804aRedis\u5206\u5e03\u5f0f\u9501\u81ea\u52a8\u7eed\u671f\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n

Redis \u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/h2>\n
    \n
  • \u6307\u5b9a\u4e00\u4e2a key \u4f5c\u4e3a\u9501\u6807\u8bb0\uff0c\u5b58\u5165 Redis \u4e2d\uff0c\u6307\u5b9a\u4e00\u4e2a \u552f\u4e00\u7684\u7528\u6237\u6807\u8bc6\u4f5c\u4e3a value\u3002<\/li>\n
  • \u5f53 key \u4e0d\u5b58\u5728\u65f6\u624d\u80fd\u8bbe\u7f6e\u503c\uff0c\u786e\u4fdd\u540c\u4e00\u65f6\u95f4\u53ea\u6709\u4e00\u4e2a\u5ba2\u6237\u7aef\u8fdb\u7a0b\u83b7\u5f97\u9501\uff0c\u6ee1\u8db3\u4e92\u65a5\u6027\u7279\u6027\u3002<\/li>\n
  • \u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u9632\u6b62\u56e0\u7cfb\u7edf\u5f02\u5e38\u5bfc\u81f4\u6ca1\u80fd\u5220\u9664\u8fd9\u4e2a key\uff0c\u6ee1\u8db3\u9632\u6b7b\u9501\u7279\u6027\u3002<\/li>\n
  • \u5f53\u5904\u7406\u5b8c\u4e1a\u52a1\u4e4b\u540e\u9700\u8981\u6e05\u9664\u8fd9\u4e2a key \u6765\u91ca\u653e\u9501\uff0c\u6e05\u9664 key \u65f6\u9700\u8981\u6821\u9a8c value \u503c\uff0c\u9700\u8981\u6ee1\u8db3\u53ea\u6709\u52a0\u9501\u7684\u4eba\u624d\u80fd\u91ca\u653e\u9501 \u3002<\/li>\n<\/ul>\n

    \u95ee\u9898<\/h2>\n

    \u5982\u679c\u8fd9\u4e2a\u9501\u7684\u8fc7\u671f\u65f6\u95f4\u662f30\u79d2\uff0c\u4f46\u662f\u4e1a\u52a1\u8fd0\u884c\u8d85\u8fc7\u4e8630\u79d2\uff0c\u6bd4\u598240\u79d2\uff0c\u5f53\u4e1a\u52a1\u8fd0\u884c\u523030\u79d2\u7684\u65f6\u5019\uff0c\u9501\u8fc7\u671f\u4e86\uff0c\u5176\u4ed6\u5ba2\u6237\u7aef\u62ff\u5230\u4e86\u8fd9\u4e2a\u9501\uff0c\u600e\u4e48\u529e<\/p>\n

    \u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e2a\u5408\u7406\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u8ba9\u4e1a\u52a1\u80fd\u591f\u5728\u8fd9\u4e2a\u65f6\u95f4\u5185\u5b8c\u6210\u4e1a\u52a1\u903b\u8f91\uff0c\u4f46LockTime\u7684\u8bbe\u7f6e\u539f\u672c\u5c31\u5f88\u4e0d\u5bb9\u6613\u3002<\/p>\n

      \n
    • LockTime\u8bbe\u7f6e\u8fc7\u5c0f\uff0c\u9501\u81ea\u52a8\u8d85\u65f6\u7684\u6982\u7387\u5c31\u4f1a\u589e\u52a0\uff0c\u9501\u5f02\u5e38\u5931\u6548\u7684\u6982\u7387\u4e5f\u5c31\u4f1a\u589e\u52a0\uff1b<\/li>\n
    • LockTime\u8bbe\u7f6e\u8fc7\u5927\uff0c\u4e07\u4e00\u670d\u52a1\u51fa\u73b0\u5f02\u5e38\u65e0\u6cd5\u6b63\u5e38\u91ca\u653e\u9501\uff0c\u90a3\u4e48\u51fa\u73b0\u8fd9\u79cd\u5f02\u5e38\u9501\u7684\u65f6\u95f4\u4e5f\u5c31\u8d8a\u957f\u3002<\/li>\n<\/ul>\n

      \u6211\u4eec\u53ea\u80fd\u901a\u8fc7\u7ecf\u9a8c\u53bb\u914d\u7f6e\uff0c\u4e00\u4e2a\u53ef\u4ee5\u63a5\u53d7\u7684\u503c\uff0c\u57fa\u672c\u4e0a\u662f\u8fd9\u4e2a\u670d\u52a1\u5386\u53f2\u4e0a\u7684\u5e73\u5747\u8017\u65f6\u518d\u589e\u52a0\u4e00\u5b9a\u7684buff\u3002\u603b\u4f53\u6765\u8bf4\uff0c\u8bbe\u7f6e\u4e00\u4e2a\u5408\u7406\u7684\u8fc7\u671f\u65f6\u95f4\u5e76\u4e0d\u5bb9\u6613<\/p>\n

      \u6211\u4eec\u4e5f\u53ef\u4ee5\u4e0d\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u8ba9\u4e1a\u52a1\u8fd0\u884c\u7ed3\u675f\u540e\u89e3\u9501\uff0c\u4f46\u662f\u5982\u679c\u5ba2\u6237\u7aef\u51fa\u73b0\u4e86\u5f02\u5e38\u7ed3\u675f\u4e86\u6216\u5b95\u673a\u4e86\uff0c\u90a3\u4e48\u8fd9\u4e2a\u9501\u5c31\u65e0\u6cd5\u89e3\u9501\uff0c\u53d8\u6210\u6b7b\u9501\uff1b<\/p>\n

      \u81ea\u52a8\u7eed\u671f<\/h2>\n

      \u6211\u4eec\u53ef\u4ee5\u5148\u7ed9\u9501\u8bbe\u7f6e\u4e00\u4e2aLockTime\uff0c\u7136\u540e\u542f\u52a8\u4e00\u4e2a\u5b88\u62a4\u7ebf\u7a0b\uff0c\u8ba9\u5b88\u62a4\u7ebf\u7a0b\u5728\u4e00\u6bb5\u65f6\u95f4\u540e\uff0c\u91cd\u65b0\u53bb\u8bbe\u7f6e\u8fd9\u4e2a\u9501\u7684LockTime\u3002<\/p>\n

      \u770b\u8d77\u6765\u5f88\u7b80\u5355\uff0c\u4f46\u5b9e\u73b0\u8d77\u6765\u5e76\u4e0d\u5bb9\u6613<\/p>\n

        \n
      • \u548c\u91ca\u653e\u9501\u7684\u60c5\u51b5\u4e00\u6837\uff0c\u6211\u4eec\u9700\u8981\u5148\u5224\u65ad\u6301\u6709\u9501\u5ba2\u6237\u7aef\u662f\u5426\u6709\u53d8\u5316\u3002\u5426\u5219\u4f1a\u9020\u6210\u65e0\u8bba\u8c01\u6301\u6709\u9501\uff0c\u5b88\u62a4\u7ebf\u7a0b\u90fd\u4f1a\u53bb\u91cd\u65b0\u8bbe\u7f6e\u9501\u7684LockTime\u3002<\/li>\n
      • \u5b88\u62a4\u7ebf\u7a0b\u8981\u5728\u5408\u7406\u7684\u65f6\u95f4\u518d\u53bb\u91cd\u65b0\u8bbe\u7f6e\u9501\u7684LockTime\uff0c\u5426\u5219\u4f1a\u9020\u6210\u8d44\u6e90\u7684\u6d6a\u8d39\u3002\u4e0d\u80fd\u52a8\u4e0d\u52a8\u5c31\u53bb\u7eed\u3002<\/li>\n
      • \u5982\u679c\u6301\u6709\u9501\u7684\u7ebf\u7a0b\u5df2\u7ecf\u5904\u7406\u5b8c\u4e1a\u52a1\u4e86\uff0c\u90a3\u4e48\u5b88\u62a4\u7ebf\u7a0b\u4e5f\u5e94\u8be5\u88ab\u9500\u6bc1\u3002\u4e0d\u80fd\u4e1a\u52a1\u8fd0\u884c\u7ed3\u675f\u4e86\uff0c\u5b88\u62a4\u8005\u8fd8\u5728\u90a3\u91cc\u7ee7\u7eed\u8fd0\u884c\uff0c\u6d6a\u8d39\u8d44\u6e90\u3002<\/li>\n<\/ul>\n

        \u770b\u95e8\u72d7<\/h2>\n

        Redisson\u7684\u770b\u95e8\u72d7\u673a\u5236\u5c31\u662f\u8fd9\u79cd\u673a\u5236\u5b9e\u73b0\u81ea\u52a8\u7eed\u671f\u7684<\/p>\n

        \"Redis\u5206\u5e03\u5f0f\u9501\u5982\u4f55\u81ea\u52a8\u7eed\u671f\u7684\u5b9e\u73b0\u63d2\u56fe\"<\/p>\n

        Redissson tryLock<\/h2>\n
        \npublic boolean tryLock(long waitTime, long leaseTime, TimeUnit unit) throws InterruptedException {\n        long time = unit.toMillis(waitTime);\n        long current = System.currentTimeMillis();\n        long threadId = Thread.currentThread().getId();\n        \/\/ 1.\u5c1d\u8bd5\u83b7\u53d6\u9501\n        Long ttl = tryAcquire(leaseTime, unit, threadId);\n        \/\/ lock acquired\n        if (ttl == null) {\n            return true;\n        }\n\n        \/\/ \u7533\u8bf7\u9501\u7684\u8017\u65f6\u5982\u679c\u5927\u4e8e\u7b49\u4e8e\u6700\u5927\u7b49\u5f85\u65f6\u95f4\uff0c\u5219\u7533\u8bf7\u9501\u5931\u8d25.\n        time -= System.currentTimeMillis() - current;\n        if (time  subscribeFuture = subscribe(threadId);\n        \/\/ await \u65b9\u6cd5\u5185\u90e8\u662f\u7528 CountDownLatch \u6765\u5b9e\u73b0\u963b\u585e\uff0c\u83b7\u53d6 subscribe \u5f02\u6b65\u6267\u884c\u7684\u7ed3\u679c\uff08\u5e94\u7528\u4e86 Netty \u7684 Future\uff09\n        if (!subscribeFuture.await(time, TimeUnit.MILLISECONDS)) {\n            if (!subscribeFuture.cancel(false)) {\n                subscribeFuture.onComplete((res, e) -> {\n                    if (e == null) {\n                        unsubscribe(subscribeFuture, threadId);\n                    }\n                });\n            }\n            acquireFailed(threadId);\n            return false;\n        }\n\n        try {\n            \/\/ \u8ba1\u7b97\u83b7\u53d6\u9501\u7684\u603b\u8017\u65f6\uff0c\u5982\u679c\u5927\u4e8e\u7b49\u4e8e\u6700\u5927\u7b49\u5f85\u65f6\u95f4\uff0c\u5219\u83b7\u53d6\u9501\u5931\u8d25.\n            time -= System.currentTimeMillis() - current;\n            if (time = 0 && ttl \n\n<\/pre>\n
          \n
        • \u5c1d\u8bd5\u83b7\u53d6\u9501\uff0c\u8fd4\u56de null \u5219\u8bf4\u660e\u52a0\u9501\u6210\u529f\uff0c\u8fd4\u56de\u4e00\u4e2a\u6570\u503c\uff0c\u5219\u8bf4\u660e\u5df2\u7ecf\u5b58\u5728\u8be5\u9501\uff0cttl \u4e3a\u9501\u7684\u5269\u4f59\u5b58\u6d3b\u65f6\u95f4\u3002<\/li>\n
        • \u5982\u679c\u6b64\u65f6\u5ba2\u6237\u7aef 2 \u8fdb\u7a0b\u83b7\u53d6\u9501\u5931\u8d25\uff0c\u90a3\u4e48\u4f7f\u7528\u5ba2\u6237\u7aef 2 \u7684\u7ebf\u7a0b id\uff08\u5176\u5b9e\u672c\u8d28\u4e0a\u5c31\u662f\u8fdb\u7a0b id\uff09\u901a\u8fc7 Redis \u7684 channel \u8ba2\u9605\u9501\u91ca\u653e\u7684\u4e8b\u4ef6\u3002\u5982\u679c\u7b49\u5f85\u7684\u8fc7\u7a0b\u4e2d\u4e00\u76f4\u672a\u7b49\u5230\u9501\u7684\u91ca\u653e\u4e8b\u4ef6\u901a\u77e5\uff0c\u5f53\u8d85\u8fc7\u6700\u5927\u7b49\u5f85\u65f6\u95f4\u5219\u83b7\u53d6\u9501\u5931\u8d25\uff0c\u8fd4\u56de false\uff0c\u4e5f\u5c31\u662f\u7b2c 39 \u884c\u4ee3\u7801\u3002\u5982\u679c\u7b49\u5230\u4e86\u9501\u7684\u91ca\u653e\u4e8b\u4ef6\u7684\u901a\u77e5\uff0c\u5219\u5f00\u59cb\u8fdb\u5165\u4e00\u4e2a\u4e0d\u65ad\u91cd\u8bd5\u83b7\u53d6\u9501\u7684\u5faa\u73af\u3002<\/li>\n
        • \u5faa\u73af\u4e2d\u6bcf\u6b21\u90fd\u5148\u8bd5\u7740\u83b7\u53d6\u9501\uff0c\u5e76\u5f97\u5230\u5df2\u5b58\u5728\u7684\u9501\u7684\u5269\u4f59\u5b58\u6d3b\u65f6\u95f4\u3002\u5982\u679c\u5728\u91cd\u8bd5\u4e2d\u62ff\u5230\u4e86\u9501\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u3002\u5982\u679c\u9501\u5f53\u524d\u8fd8\u662f\u88ab\u5360\u7528\u7684\uff0c\u90a3\u4e48\u7b49\u5f85\u91ca\u653e\u9501\u7684\u6d88\u606f\uff0c\u5177\u4f53\u5b9e\u73b0\u4f7f\u7528\u4e86\u4fe1\u53f7\u91cf Semaphore \u6765\u963b\u585e\u7ebf\u7a0b\uff0c\u5f53\u9501\u91ca\u653e\u5e76\u53d1\u5e03\u91ca\u653e\u9501\u7684\u6d88\u606f\u540e\uff0c\u4fe1\u53f7\u91cf\u7684 release() \u65b9\u6cd5\u4f1a\u88ab\u8c03\u7528\uff0c\u6b64\u65f6\u88ab\u4fe1\u53f7\u91cf\u963b\u585e\u7684\u7b49\u5f85\u961f\u5217\u4e2d\u7684\u4e00\u4e2a\u7ebf\u7a0b\u5c31\u53ef\u4ee5\u7ee7\u7eed\u5c1d\u8bd5\u83b7\u53d6\u9501\u4e86\u3002<\/li>\n
        • \u5f53\u9501\u6b63\u5728\u88ab\u5360\u7528\u65f6\uff0c\u7b49\u5f85\u83b7\u53d6\u9501\u7684\u8fdb\u7a0b\u5e76\u4e0d\u662f\u901a\u8fc7\u4e00\u4e2a while(true) \u6b7b\u5faa\u73af\u53bb\u83b7\u53d6\u9501\uff0c\u800c\u662f\u5229\u7528\u4e86 Redis \u7684\u53d1\u5e03\u8ba2\u9605\u673a\u5236,\u901a\u8fc7 await \u65b9\u6cd5\u963b\u585e\u7b49\u5f85\u9501\u7684\u8fdb\u7a0b\uff0c\u6709\u6548\u7684\u89e3\u51b3\u4e86\u65e0\u6548\u7684\u9501\u7533\u8bf7\u6d6a\u8d39\u8d44\u6e90\u7684\u95ee\u9898\u3002<\/li>\n<\/ul>\n
          \u770b\u95e8\u72d7\u5982\u4f55\u81ea\u52a8\u7eed\u671f<\/h2>\n
          Redisson\u770b\u95e8\u72d7\u673a\u5236\uff0c \u53ea\u8981\u5ba2\u6237\u7aef\u52a0\u9501\u6210\u529f\uff0c\u5c31\u4f1a\u542f\u52a8\u4e00\u4e2a Watch Dog\u3002<\/p>\n
          \nprivate \n   \n     RFuture\n    \n      tryAcquireAsync(long leaseTime, TimeUnit unit, long threadId) { if (leaseTime != -1) { return tryLockInnerAsync(leaseTime, unit, threadId, RedisCommands.EVAL_LONG); } RFuture\n     \n       ttlRemainingFuture = tryLockInnerAsync(commandExecutor.getConnectionManager().getCfg().getLockWatchdogTimeout(), TimeUnit.MILLISECONDS, threadId, RedisCommands.EVAL_LONG); ttlRemainingFuture.onComplete((ttlRemaining, e) -> { if (e != null) { return; } \/\/ lock acquired if (ttlRemaining == null) { scheduleExpirationRenewal(threadId); } }); return ttlRemainingFuture; } \n     \n    \n   <\/pre>\n
          leaseTime \u5fc5\u987b\u662f -1 \u624d\u4f1a\u5f00\u542f Watch Dog \u673a\u5236\uff0c\u5982\u679c\u9700\u8981\u5f00\u542f Watch Dog \u673a\u5236\u5c31\u5fc5\u987b\u4f7f\u7528\u9ed8\u8ba4\u7684\u52a0\u9501\u65f6\u95f4\u4e3a 30s\u3002<\/p>\n
          \u5982\u679c\u4f60\u81ea\u5df1\u81ea\u5b9a\u4e49\u65f6\u95f4\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u65f6\u95f4\uff0c\u9501\u5c31\u4f1a\u81ea\u5b9a\u91ca\u653e\uff0c\u5e76\u4e0d\u4f1a\u81ea\u52a8\u7eed\u671f\u3002<\/p>\n
          \u7eed\u671f\u539f\u7406<\/h2>\n
          \u7eed\u671f\u539f\u7406\u5176\u5b9e\u5c31\u662f\u7528lua\u811a\u672c\uff0c\u5c06\u9501\u7684\u65f6\u95f4\u91cd\u7f6e\u4e3a30s<\/p>\n
          \nprivate void scheduleExpirationRenewal(long threadId) {\n    ExpirationEntry entry = new ExpirationEntry();\n    ExpirationEntry oldEntry = EXPIRATION_RENEWAL_MAP.putIfAbsent(getEntryName(), entry);\n    if (oldEntry != null) {\n        oldEntry.addThreadId(threadId);\n    } else {\n        entry.addThreadId(threadId);\n        renewExpiration();\n    }\n}\n\nprotected RFuture\n   \n     renewExpirationAsync(long threadId) {\n    return commandExecutor.evalWriteAsync(getName(), LongCodec.INSTANCE, RedisCommands.EVAL_BOOLEAN,\n            \"if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then \" +\n                \"redis.call('pexpire', KEYS[1], ARGV[1]); \" +\n                \"return 1; \" +\n            \"end; \" +\n            \"return 0;\",\n        Collections.\n    singletonList(getName()), internalLockLeaseTime, getLockName(threadId)); } \n   <\/pre>\n
          Watch Dog \u673a\u5236\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u540e\u53f0\u5b9a\u65f6\u4efb\u52a1\u7ebf\u7a0b\uff0c\u83b7\u53d6\u9501\u6210\u529f\u4e4b\u540e\uff0c\u4f1a\u5c06\u6301\u6709\u9501\u7684\u7ebf\u7a0b\u653e\u5165\u5230\u4e00\u4e2a RedissonLock.EXPIRATION_RENEWAL_MAP\u91cc\u9762\uff0c\u7136\u540e\u6bcf\u9694 10 \u79d2 \uff08internalLockLeaseTime \/ 3\uff09 \u68c0\u67e5\u4e00\u4e0b\uff0c\u5982\u679c\u5ba2\u6237\u7aef \u8fd8\u6301\u6709\u9501 key\uff08\u5224\u65ad\u5ba2\u6237\u7aef\u662f\u5426\u8fd8\u6301\u6709 key\uff0c\u5176\u5b9e\u5c31\u662f\u904d\u5386 EXPIRATION_RENEWAL_MAP \u91cc\u9762\u7ebf\u7a0b id \u7136\u540e\u6839\u636e\u7ebf\u7a0b id \u53bb Redis \u4e2d\u67e5\uff0c\u5982\u679c\u5b58\u5728\u5c31\u4f1a\u5ef6\u957f key \u7684\u65f6\u95f4\uff09\uff0c\u90a3\u4e48\u5c31\u4f1a\u4e0d\u65ad\u7684\u5ef6\u957f\u9501 key \u7684\u751f\u5b58\u65f6\u95f4\u3002<\/p>\n
          \u5982\u679c\u670d\u52a1\u5b95\u673a\u4e86\uff0cWatch Dog \u673a\u5236\u7ebf\u7a0b\u4e5f\u5c31\u6ca1\u6709\u4e86\uff0c\u6b64\u65f6\u5c31\u4e0d\u4f1a\u5ef6\u957f key \u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u5230\u4e86 30s \u4e4b\u540e\u5c31\u4f1a\u81ea\u52a8\u8fc7\u671f\u4e86\uff0c\u5176\u4ed6\u7ebf\u7a0b\u5c31\u53ef\u4ee5\u83b7\u53d6\u5230\u9501\u3002<\/p>\n
          \u4eca\u5929\u5173\u4e8e\u300aRedis\u5206\u5e03\u5f0f\u9501\u5982\u4f55\u81ea\u52a8\u7eed\u671f\u7684\u5b9e\u73b0\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728golang\u5b66\u4e60\u7f51\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n
             \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1a\u811a\u672c\u4e4b\u5bb6 \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb \u5220\u9664  <\/p>\n
          \n
          \n <\/dt>\n
          \n   Redis\u5728\u9879\u76ee\u4e2d\u7684\u4f7f\u7528(JedisPool\u65b9\u5f0f)\n <\/dd>\n<\/dl>\n
          \n
          \n <\/dt>\n
          \n   redis\u4e13\u5c5e\u94fe\u8868ziplist\u7684\u4f7f\u7528\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
          Redis\u5206\u5e03\u5f0f\u9501\u5982\u4f55\u81ea\u52a8\u7eed\u671f\u7684\u5b9e\u73b0 0\u6d4f\u89c8 \u6536\u85cf \u5728\u6570\u636e\u5e93\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929golang\u5b66\u4e60\u7f51\u5c31\u6574\u7406\u5206\u4eab\u300aRedis\u5206\u5e03\u5f0f\u9501\u5982\u4f55\u81ea\u52a8\u7eed\u671f\u7684\u5b9e\u73b0\u300b\uff0c\u804a\u804aRedis\u5206\u5e03\u5f0f\u9501\u81ea\u52a8\u7eed\u671f\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002 Redis \u5b9e\u73b0\u5206\u5e03\u5f0f\u9501 \u6307\u5b9a\u4e00\u4e2a key \u4f5c\u4e3a\u9501\u6807\u8bb0\uff0c\u5b58\u5165 Redis \u4e2d\uff0c\u6307\u5b9a\u4e00\u4e2a \u552f\u4e00\u7684\u7528\u6237\u6807\u8bc6\u4f5c\u4e3a value\u3002 \u5f53 key \u4e0d\u5b58\u5728\u65f6\u624d\u80fd\u8bbe\u7f6e\u503c\uff0c\u786e\u4fdd\u540c\u4e00\u65f6\u95f4\u53ea\u6709\u4e00\u4e2a\u5ba2\u6237\u7aef\u8fdb\u7a0b\u83b7\u5f97\u9501\uff0c\u6ee1\u8db3\u4e92\u65a5\u6027\u7279\u6027\u3002 \u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u9632\u6b62\u56e0\u7cfb\u7edf\u5f02\u5e38\u5bfc\u81f4\u6ca1\u80fd\u5220\u9664\u8fd9\u4e2a key\uff0c\u6ee1\u8db3\u9632\u6b7b\u9501\u7279\u6027\u3002 \u5f53\u5904\u7406\u5b8c\u4e1a\u52a1\u4e4b\u540e\u9700\u8981\u6e05\u9664\u8fd9\u4e2a key \u6765\u91ca\u653e\u9501\uff0c\u6e05\u9664 key \u65f6\u9700\u8981\u6821\u9a8c value \u503c\uff0c\u9700\u8981\u6ee1\u8db3\u53ea\u6709\u52a0\u9501\u7684\u4eba\u624d\u80fd\u91ca\u653e\u9501 \u3002 \u95ee\u9898 \u5982\u679c\u8fd9\u4e2a\u9501\u7684\u8fc7\u671f\u65f6\u95f4\u662f30\u79d2\uff0c\u4f46\u662f\u4e1a\u52a1\u8fd0\u884c\u8d85\u8fc7\u4e8630\u79d2\uff0c\u6bd4\u598240\u79d2\uff0c\u5f53\u4e1a\u52a1\u8fd0\u884c\u523030\u79d2\u7684\u65f6\u5019\uff0c\u9501\u8fc7\u671f\u4e86\uff0c\u5176\u4ed6\u5ba2\u6237\u7aef\u62ff\u5230\u4e86\u8fd9\u4e2a\u9501\uff0c\u600e\u4e48\u529e \u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e2a\u5408\u7406\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u8ba9\u4e1a\u52a1\u80fd\u591f\u5728\u8fd9\u4e2a\u65f6\u95f4\u5185\u5b8c\u6210\u4e1a\u52a1\u903b\u8f91\uff0c\u4f46LockTime\u7684\u8bbe\u7f6e\u539f\u672c\u5c31\u5f88\u4e0d\u5bb9\u6613\u3002 LockTime\u8bbe\u7f6e\u8fc7\u5c0f\uff0c\u9501\u81ea\u52a8\u8d85\u65f6\u7684\u6982\u7387\u5c31\u4f1a\u589e\u52a0\uff0c\u9501\u5f02\u5e38\u5931\u6548\u7684\u6982\u7387\u4e5f\u5c31\u4f1a\u589e\u52a0\uff1b LockTime\u8bbe\u7f6e\u8fc7\u5927\uff0c\u4e07\u4e00\u670d\u52a1\u51fa\u73b0\u5f02\u5e38\u65e0\u6cd5\u6b63\u5e38\u91ca\u653e\u9501\uff0c\u90a3\u4e48\u51fa\u73b0\u8fd9\u79cd\u5f02\u5e38\u9501\u7684\u65f6\u95f4\u4e5f\u5c31\u8d8a\u957f\u3002 \u6211\u4eec\u53ea\u80fd\u901a\u8fc7\u7ecf\u9a8c\u53bb\u914d\u7f6e\uff0c\u4e00\u4e2a\u53ef\u4ee5\u63a5\u53d7\u7684\u503c\uff0c\u57fa\u672c\u4e0a\u662f\u8fd9\u4e2a\u670d\u52a1\u5386\u53f2\u4e0a\u7684\u5e73\u5747\u8017\u65f6\u518d\u589e\u52a0\u4e00\u5b9a\u7684buff\u3002\u603b\u4f53\u6765\u8bf4\uff0c\u8bbe\u7f6e\u4e00\u4e2a\u5408\u7406\u7684\u8fc7\u671f\u65f6\u95f4\u5e76\u4e0d\u5bb9\u6613 \u6211\u4eec\u4e5f\u53ef\u4ee5\u4e0d\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u8ba9\u4e1a\u52a1\u8fd0\u884c\u7ed3\u675f\u540e\u89e3\u9501\uff0c\u4f46\u662f\u5982\u679c\u5ba2\u6237\u7aef\u51fa\u73b0\u4e86\u5f02\u5e38\u7ed3\u675f\u4e86\u6216\u5b95\u673a\u4e86\uff0c\u90a3\u4e48\u8fd9\u4e2a\u9501\u5c31\u65e0\u6cd5\u89e3\u9501\uff0c\u53d8\u6210\u6b7b\u9501\uff1b \u81ea\u52a8\u7eed\u671f \u6211\u4eec\u53ef\u4ee5\u5148\u7ed9\u9501\u8bbe\u7f6e\u4e00\u4e2aLockTime\uff0c\u7136\u540e\u542f\u52a8\u4e00\u4e2a\u5b88\u62a4\u7ebf\u7a0b\uff0c\u8ba9\u5b88\u62a4\u7ebf\u7a0b\u5728\u4e00\u6bb5\u65f6\u95f4\u540e\uff0c\u91cd\u65b0\u53bb\u8bbe\u7f6e\u8fd9\u4e2a\u9501\u7684LockTime\u3002 \u770b\u8d77\u6765\u5f88\u7b80\u5355\uff0c\u4f46\u5b9e\u73b0\u8d77\u6765\u5e76\u4e0d\u5bb9\u6613 \u548c\u91ca\u653e\u9501\u7684\u60c5\u51b5\u4e00\u6837\uff0c\u6211\u4eec\u9700\u8981\u5148\u5224\u65ad\u6301\u6709\u9501\u5ba2\u6237\u7aef\u662f\u5426\u6709\u53d8\u5316\u3002\u5426\u5219\u4f1a\u9020\u6210\u65e0\u8bba\u8c01\u6301\u6709\u9501\uff0c\u5b88\u62a4\u7ebf\u7a0b\u90fd\u4f1a\u53bb\u91cd\u65b0\u8bbe\u7f6e\u9501\u7684LockTime\u3002 \u5b88\u62a4\u7ebf\u7a0b\u8981\u5728\u5408\u7406\u7684\u65f6\u95f4\u518d\u53bb\u91cd\u65b0\u8bbe\u7f6e\u9501\u7684LockTime\uff0c\u5426\u5219\u4f1a\u9020\u6210\u8d44\u6e90\u7684\u6d6a\u8d39\u3002\u4e0d\u80fd\u52a8\u4e0d\u52a8\u5c31\u53bb\u7eed\u3002 \u5982\u679c\u6301\u6709\u9501\u7684\u7ebf\u7a0b\u5df2\u7ecf\u5904\u7406\u5b8c\u4e1a\u52a1\u4e86\uff0c\u90a3\u4e48\u5b88\u62a4\u7ebf\u7a0b\u4e5f\u5e94\u8be5\u88ab\u9500\u6bc1\u3002\u4e0d\u80fd\u4e1a\u52a1\u8fd0\u884c\u7ed3\u675f\u4e86\uff0c\u5b88\u62a4\u8005\u8fd8\u5728\u90a3\u91cc\u7ee7\u7eed\u8fd0\u884c\uff0c\u6d6a\u8d39\u8d44\u6e90\u3002 \u770b\u95e8\u72d7 Redisson\u7684\u770b\u95e8\u72d7\u673a\u5236\u5c31\u662f\u8fd9\u79cd\u673a\u5236\u5b9e\u73b0\u81ea\u52a8\u7eed\u671f\u7684 Redissson tryLock public boolean tryLock(long waitTime, long leaseTime, TimeUnit unit) throws InterruptedException { long 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