{"id":3981,"date":"2022-10-25T11:04:19","date_gmt":"2022-10-25T03:04:19","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3981"},"modified":"2022-11-02T13:50:53","modified_gmt":"2022-11-02T05:50:53","slug":"redis%e4%b8%bb%e4%bb%8e%e5%88%87%e6%8d%a2%e5%af%bc%e8%87%b4%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e4%b8%a2%e5%a4%b1%e9%97%ae%e9%a2%98%e6%98%af%e6%80%8e%e4%b9%88%e5%9b%9e%e4%ba%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3981","title":{"rendered":"Redis\u76f8\u5173\u7684\u4e00\u4e9b\u95ee\u9898"},"content":{"rendered":"\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-amber-color\">\u5148\u5f00\u4e00\u4e2a\u9898\u76ee\uff0c\u665a\u70b9\u4e86\u89e3\u4e0b<\/mark><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>1\u3001Redis\u4e3b\u4ece\u5207\u6362\u5bfc\u81f4\u5206\u5e03\u5f0f\u9501\u4e22\u5931\u95ee\u9898\u662f\u600e\u4e48\u56de\u4e8b\uff1f<\/p>\n\n\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group__inner-container\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<pre class=\"wp-block-code\"><code>\u4e3b\u8282\u70b9\u8bbe\u7f6e\u9501\u7684key\u6210\u529f\u4e4b\u540e\uff0c\u8fd8\u6ca1\u6765\u5f97\u53ca\u540c\u6b65\u7ed9\u4ece\u8282\u70b9\uff0c\u5c31\u6302\u6389\u4e86\uff0c\u4ece\u8282\u70b9\u91cd\u65b0\u6210\u4e3a\u4e3b\u8282\u70b9\u4e5f\u6709\u7ebf\u7a0b\u52a0\u9501\u6210\u529f\uff0c\u5bfc\u81f4\u540c\u6b65\u4ee3\u7801\u5931\u6548\u3002\u53ef\u4ee5\u4f7f\u7528zookeeper\u7684\u5206\u5e03\u5f0f\u9501\u6765\u4ee3\u66ff\uff0c\u96c6\u7fa4\u7ed3\u6784\u81f3\u5c11\u6709\u4e09\u4e2a\u8282\u70b9\u4e24\u4e2a\u540c\u6b65\u5b8c\u624d\u7b97\u83b7\u5f97\u9501\u3002<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p>2\u3001Redlock\u5982\u4f55\u89e3\u51b3Redis\u4e3b\u4ece\u5207\u6362\u5206\u5e03\u5f0f\u9501\u4e22\u5931\u95ee\u9898\uff1f<\/p>\n\n\n\n<p>zk\uff0credlock\u7b49\u65b9\u6848\u3002<\/p>\n\n\n\n<p>3\u3001\u4e2d\u5c0f\u516c\u53f8Redis\u7f13\u5b58\u67b6\u6784\u4ee5\u53ca\u7ebf\u4e0a\u95ee\u9898\u5206\u6790\uff1f<\/p>\n\n\n\n<p>4\u3001\u5927\u5382\u7ebf\u4e0a\u5927\u89c4\u6a21\u5546\u54c1\u7f13\u5b58\u6570\u636e\u51b7\u70ed\u5206\u79bb\u5b9e\u6218\uff1f<\/p>\n\n\n\n<p>5\u3001\u5b9e\u6218\u89e3\u51b3\u5927\u89c4\u6a21\u7f13\u5b58\u51fb\u7a7f\u5bfc\u81f4\u7ebf\u4e0a\u6570\u636e\u5e93\u538b\u529b\u66b4\u589e\uff1f<\/p>\n\n\n\n<p>6\u3001\u9762\u8bd5\u5e38\u95ee\u7684\u7f13\u5b58\u7a7f\u900f\u662f\u600e\u4e48\u56de\u4e8b\uff1f<\/p>\n\n\n\n<p>7\u3001\u57fa\u4e8eDCL\u673a\u5236\u89e3\u51b3\u7a81\u53d1\u6027\u70ed\u70b9\u7f13\u5b58\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\u5b9e\u6218<\/p>\n\n\n\n<p>8\u3001Redis\u5206\u5e03\u5f0f\u9501\u89e3\u51b3\u7f13\u5b58\u4e0e\u6570\u636e\u5e93\u53cc\u5199\u4e0d\u4e00\u81f4\u95ee\u9898\u5b9e\u6218<\/p>\n\n\n\n<p>9\u3001\u5927\u4fc3\u538b\u529b\u66b4\u589e\u5bfc\u81f4\u5206\u5e03\u5f0f\u9501\u4e32\u884c\u4e89\u7528\u95ee\u9898\u4f18\u5316\u5b9e\u6218<\/p>\n\n\n\n<p>10\u3001\u5229\u7528\u591a\u7ea7\u7f13\u5b58\u67b6\u6784\u89e3\u51b3Redis\u7ebf\u4e0a\u96c6\u7fa4\u7f13\u5b58\u96ea\u5d29\u95ee\u9898<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u76f4\u63a5\u628a\u4e00\u4e2a\u6587\u7ae0\u6284\u4e0b\u6765\u4e86\uff1a<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Redis\u9ad8\u5e76\u53d1\u7f13\u5b58\u67b6\u6784\u6027\u80fd\u4f18\u5316\u5b9e\u6218\u3010\u5341\u4e8c\u5927\u573a\u666f\u3011<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f1: \u4e2d\u5c0f\u578b\u516c\u53f8Redis\u7f13\u5b58\u67b6\u6784\u4ee5\u53ca\u7ebf\u4e0a\u95ee\u9898\u5b9e\u6218<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"655\" height=\"405\" src=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/11\/image-1.png\" alt=\"\" class=\"wp-image-4010\" srcset=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/11\/image-1.png 655w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/11\/image-1-300x185.png 300w\" sizes=\"(max-width: 655px) 100vw, 655px\" \/><\/figure>\n\n\n\n<p><strong>\u3010\u63a8\u8350\u89c2\u770b\uff1a<a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Fwww.bilibili.com%2Fvideo%2FBV13b4y147Vg%2F\" target=\"_blank\" rel=\"noreferrer noopener\">\u5206\u79d2\u5fc5\u4e89\uff01\u80cc\u5e9f\u540a\u6253\u9762\u8bd5\u5b98\uff1aRedis+MYSQL\u7ecf\u5178\u9898\u89e352\u8bb2\uff08\u9644\u6587\u6863\u7248\u5e26\u7b54\u6848\uff09| \u5e95\u5c42\u539f\u7406 \u6e90\u7801 \u8c03\u4f18\u7cbe\u8bb2\uff01<\/a>\u3011<\/strong><\/p>\n\n\n\n<p>\u7ebf\u7a0bA\u5728master\u83b7\u53d6\u9501\u4e4b\u540e\uff0cmaster\u5728\u540c\u6b65\u6570\u636e\u5230slave\u65f6\uff0cmaster\u7a81\u7136\u5b95\u673a(\u6b64\u65f6\u6570\u636e\u8fd8\u6ca1\u6709\u540c\u6b65\u5230slave)\uff0c\u7136\u540eslave\u4f1a\u81ea\u52a8\u9009\u4e3e\u6210\u4e3a\u65b0\u7684master\uff0c\u6b64\u65f6\u7ebf\u7a0bB\u83b7\u53d6\u9501\uff0c\u7ed3\u679c\u6210\u529f\u4e86\uff0c\u8fd9\u6837\u4f1a\u9020\u6210\u591a\u4e2a\u7ebf\u7a0b\u83b7\u53d6\u540c\u4e00\u628a\u9501<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u7f51\u4e0a\u8bf4RedLock\u80fd\u89e3\u51b3\u5206\u5e03\u5f0f\u9501\u5931\u6548\u7684\u95ee\u9898\u3002\u5bf9\u4e8eRedLock\u5b9e\u73b0\u539f\u7406\u662f: \u8d85\u8fc7\u534a\u6570Redis\u8282\u70b9\u52a0\u9501\u6210\u529f\u4e4b\u540e\u624d\u80fd\u7b97\u6210\u529f\uff0c\u5426\u5219\u8fd4\u56defalse\uff0c\u548cZookeeper\u7684&#8221;ZAB&#8221;\u539f\u7406\u5f88\u7c7b\u4f3c\uff0c\u800c\u4e14\u4e0eRedis Cluster\u96c6\u7fa4\u4e2d\u89e3\u51b3\u8111\u88c2\u95ee\u9898\u7684\u65b9\u6848\u7c7b\u4f3c\uff0c\u4f46\u662fRedLock\u65b9\u6848\u6709\u5f88\u5927\u7684\u5f0a\u7aef\uff0c\u4e5f\u5c31\u662f\u4f1a\u9020\u6210Redis\u53ef\u7528\u6027\u7684\u5ef6\u8fdf\uff0c\u4f17\u6240\u5468\u77e5\uff0cRedis\u7684AP(\u53ef\u7528\u6027+\u5206\u533a\u5bb9\u5fcd\u6027)\u673a\u5236\uff0c\u5047\u5982\u628aRedis\u53d8\u6210CP(\u4e00\u81f4\u6027+\u5206\u533a\u5bb9\u5fcd\u6027)\uff0c\u8fd9\u6837\u80af\u5b9a\u4f1a\u727a\u7272\u4e00\u5b9a\u7684\u53ef\u7528\u6027\uff0c\u4e0eRedis\u521d\u8877\u4e0d\u7b26\u5408\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fd8\u4e0d\u5982\u4f7f\u7528Zookeeper\u3002<\/li><li>Zookeeper\u5177\u5907CP\u673a\u5236\u4ee5\u53ca\u5b9e\u73b0\u4e86ZAB\uff0c\u80fd\u591f\u786e\u4fdd\u67d0\u4e00\u4e2a\u8282\u70b9\u5b95\u673a\uff0c\u4e5f\u80fd\u4fdd\u8bc1\u6570\u636e\u4e00\u81f4\u6027\uff0c\u800c\u4e14\u6548\u7387\u4f1a\u6bd4Redis\u9ad8\u5f88\u591a\uff0c\u66f4\u9002\u5408\u505a\u5206\u5e03\u5f0f\u9501<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f2: \u5927\u5382\u7ebf\u4e0a\u5927\u89c4\u6a21\u5546\u54c1\u7f13\u5b58\u6570\u636e\u51b7\u70ed\u5206\u79bb\u5b9e\u6218<\/h2>\n\n\n\n<p>\u95ee\u9898: \u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u4e00\u5b9a\u8981\u628a\u6240\u6709\u7684\u7f13\u5b58\u6570\u636e\u4e00\u76f4\u4fdd\u5b58\u5728\u7f13\u5b58\u4e0d\u8ba9\u5176\u5931\u6548\u5417\uff1f<\/p>\n\n\n\n<p>\u867d\u7136\u4e00\u76f4\u7f13\u5b58\u6240\u6709\u6570\u636e\u6ca1\u4ec0\u4e48\u5927\u95ee\u9898\uff0c\u4f46\u662f\u8003\u8651\u5230\u5982\u679c\u6570\u636e\u592a\u591a\uff0c\u5c31\u4f1a\u4e00\u76f4\u5360\u7528\u7f13\u5b58\u7a7a\u95f4(\u5185\u5b58\u8d44\u6e90\u975e\u5e38\u5b9d\u8d35)\uff0c\u5e76\u4e14\u6570\u636e\u7684\u7ef4\u62a4\u6027\u4e5f\u662f\u9700\u8981\u8017\u65f6\u7684.<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u5bf9\u7f13\u5b58\u6570\u636e\u505a\u51b7\u70ed\u5206\u79bb\u3002\u5728\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5728\u67e5\u8be2\u4ee3\u7801\u4e2d\u518d\u6b21\u66f4\u65b0\u8fc7\u671f\u65f6\u95f4\uff0c\u8fd9\u6837\u5c31\u80fd\u4fdd\u8bc1\u70ed\u70b9\u6570\u636e\u4e00\u76f4\u5728\u7f13\u5b58\u4e2d\uff0c\u800c\u4e0d\u7ecf\u5e38\u8bbf\u95ee\u7684\u6570\u636e\u8fc7\u671f\u4e86\u5c31\u81ea\u52a8\u4ece\u7f13\u5b58\u4e2d\u5220\u9664\u3002<\/li><\/ul>\n\n\n\n<p>\u6d41\u7a0b\u5206\u6790<\/p>\n\n\n\n<ul><li>\u5047\u5982\u4e00\u4e2a\u70ed\u70b9\u6570\u636e\u6bcf\u5929\u8bbf\u95ee\u7279\u522b\u9ad8\uff0c\u4e0d\u505c\u7684\u67e5\u8be2\u8be5\u6570\u636e\uff0c\u6bcf\u6b21\u67e5\u8be2\u65f6\u518d\u6b21\u66f4\u65b0\u8fc7\u671f\u65f6\u95f4\uff0c\u90a3\u4e48\u5728\u8fd9\u4e2a\u8fc7\u671f\u65f6\u95f4\u4e4b\u5185\u53ea\u8981\u6709\u4eba\u8bbf\u95ee\u5c31\u4f1a\u4e00\u76f4\u5b58\u5728\u7f13\u5b58\u4e2d\uff0c\u8fd9\u6837\u5c31\u4fdd\u8bc1\u70ed\u70b9\u5546\u54c1\u6570\u636e\u4e0d\u4f1a\u56e0\u4e3a\u8fc7\u671f\u65f6\u95f4\u800c\u4ece\u7f13\u5b58\u4e2d\u79fb\u9664\uff1b<\/li><li>\u800c\u5bf9\u4e8e\u4e0d\u7ecf\u5e38\u8bbf\u95ee\u7684\u51b7\u95e8\u6570\u636e\u5230\u4e86\u8fc7\u671f\u65f6\u95f4\u5c31\u53ef\u4ee5\u81ea\u52a8\u91ca\u653e\u4e86\uff0c\u540c\u65f6\u4e5f\u91ca\u653e\u9664\u4e86\u4e00\u90e8\u5206\u7f13\u5b58\u7a7a\u95f4\uff0c\u800c\u4e14\u5f53\u518d\u6b21\u8bbf\u95ee\u51b7\u95e8\u6570\u636e\u7684\u65f6\u5019\uff0c\u4ece\u6570\u636e\u5e93\u62ff\u5230\u7684\u6c38\u8fdc\u662f\u6700\u65b0\u7684\u6570\u636e\uff0c\u4e5f\u51cf\u5c11\u4e86\u7ef4\u62a4\u6210\u672c\u3002<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f3: \u57fa\u4e8eDCL\u673a\u5236\u89e3\u51b3\u70ed\u70b9\u7f13\u5b58\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\u5b9e\u6218<\/h2>\n\n\n\n<p>DCL(\u53cc\u91cd\u68c0\u6d4b\u9501)<\/p>\n\n\n\n<p>\u95ee\u9898: \u51b7\u95e8\u6570\u636e\u7a81\u7136\u53d8\u6210\u4e86\u70ed\u95e8\u6570\u636e\uff0c\u5927\u91cf\u7684\u8bf7\u6c42\u7a81\u53d1\u6027\u7684\u5bf9\u70ed\u70b9\u6570\u636e\u8fdb\u884c\u7f13\u5b58\u91cd\u5efa\u5bfc\u81f4\u7cfb\u7edf\u538b\u529b\u66b4\u589e<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u6700\u5bb9\u6613\u60f3\u5230\u7684\u5c31\u662f\u52a0\u9501<\/li><li>DCL\u673a\u5236\u3002\u5148\u67e5\u4e00\u6b21\uff0c\u7f13\u5b58\u6709\u6570\u636e\u5c31\u76f4\u63a5\u8fd4\u56de\uff0c\u6ca1\u6709\u6570\u636e\uff0c\u5c31\u52a0\u9501\uff0c\u5728\u9501\u7684\u4ee3\u7801\u5757\u4e2d\u518d\u6b21\u5148\u67e5\u8be2\u7f13\u5b58\u3002\u8fd9\u6837\u9501\u7684\u76ee\u7684\u5c31\u662f\u4e3a\u4e86\u5f53\u7b2c\u4e00\u6b21\u7f13\u5b58\u4ece\u6570\u636e\u5e93\u67e5\u8be2\u66f4\u65b0\u5230\u7f13\u5b58\u4e2d\uff0c\u4ee3\u7801\u5757\u6267\u884c\u5b8c\uff0c\u5176\u4ed6\u7ebf\u7a0b\u518d\u6b21\u8fdb\u6765\uff0c\u6b64\u65f6\u7f13\u5b58\u4e2d\u5c31\u5df2\u7ecf\u5b58\u5728\u6570\u636e\u4e86\uff0c\u8fd9\u6837\u5c31\u51cf\u5c11\u4e86\u67e5\u8be2\u6570\u636e\u5e93\u7684\u6b21\u6570<\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\npublic Product get(Long productId) {\n    Product product = null;\n    String productCacheKey = RedisKeyPrefixConst.PRODUCT_CACHE + productId;\n    \/\/DCL\u673a\u5236\uff1a\u7b2c\u4e00\u6b21\u5148\u4ece\u7f13\u5b58\u91cc\u67e5\u6570\u636e\n    product = getProductFromCache(productCacheKey);\n    if (product != null) {\n        return product;\n    }\n\n    \/\/\u52a0\u5206\u5e03\u5f0f\u9501\u89e3\u51b3\u70ed\u70b9\u7f13\u5b58\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\n    RLock hotCreateCacheLock = redisson.getLock(LOCK_PRODUCT_HOT_CACHE_CREATE_PREFIX + productId);\n    hotCreateCacheLock.lock();\n    \/\/ \u8fd9\u4e2a\u4f18\u5316\u8c28\u614e\u4f7f\u7528\uff0c\u9632\u6b62\u8d85\u65f6\u5bfc\u81f4\u7684\u5927\u89c4\u6a21\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\n    \/\/ hotCreateCacheLock.tryLock(1, TimeUnit.SECONDS);\n    try {\n        \/\/DCL\u673a\u5236\uff1a\u5728\u5206\u5e03\u5f0f\u9501\u91cc\u9762\u7b2c\u4e8c\u6b21\u67e5\u8be2\n        product = getProductFromCache(productCacheKey);\n        if (product != null) {\n            return product;\n        }\n\n        \/\/RLock productUpdateLock = redisson.getLock(LOCK_PRODUCT_UPDATE_PREFIX + productId);\n        RReadWriteLock productUpdateLock = redisson.getReadWriteLock(LOCK_PRODUCT_UPDATE_PREFIX + productId);\n        RLock rLock = productUpdateLock.readLock();\n        \/\/\u52a0\u5206\u5e03\u5f0f\u8bfb\u9501\u89e3\u51b3\u7f13\u5b58\u53cc\u5199\u4e0d\u4e00\u81f4\u95ee\u9898\n        rLock.lock();\n        try {\n            product = productDao.get(productId);\n            if (product != null) {\n                redisUtil.set(productCacheKey, JSON.toJSONString(product),\n                        genProductCacheTimeout(), TimeUnit.SECONDS);\n            } else {\n                \/\/\u8bbe\u7f6e\u7a7a\u7f13\u5b58\u89e3\u51b3\u7f13\u5b58\u7a7f\u900f\u95ee\u9898\n                redisUtil.set(productCacheKey, EMPTY_CACHE, genEmptyCacheTimeout(), TimeUnit.SECONDS);\n            }\n        } finally {\n            rLock.unlock();\n        }\n    } finally {\n        hotCreateCacheLock.unlock();\n    }\n\n    return product;\n}\n\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f4: \u7a81\u53d1\u6027\u70ed\u70b9\u7f13\u5b58\u91cd\u5efa\u5bfc\u81f4\u7cfb\u7edf\u538b\u529b\u66b4\u589e<\/h2>\n\n\n\n<p>\u95ee\u9898: \u5047\u5982\u5f53\u524d\u670910w\u4e2a\u7ebf\u7a0b\u6ca1\u6709\u62ff\u5230\u9501\u6b63\u5728\u6392\u961f\uff0c\u8fd9\u79cd\u60c5\u51b5\u53ea\u80fd\u7b49\u5230\u83b7\u53d6\u9501\u7684\u7ebf\u7a0b\u6267\u884c\u5b8c\u4ee3\u7801\u91ca\u653e\u9501\u540e\uff0c\u90a3\u6392\u961f\u768410w\u4e2a\u7ebf\u7a0b\u624d\u80fd\u518d\u6b21\u7ade\u4e89\u9501\u3002\u8fd9\u91cc\u9700\u8981\u5173\u6ce8\u7684\u95ee\u9898\u70b9\u5c31\u662f\u53c8\u8981\u518d\u6b21\u7ade\u4e89\u9501\uff0c\u610f\u5473\u7740\u7ebf\u7a0b\u7ade\u4e89\u9501\u7684\u6b21\u6570\u53ef\u80fd\u6700\u5c11&gt;1\uff0c\u9891\u7e41\u7684\u7ade\u4e89\u9501\u5bf9Redis\u6027\u80fd\u4e5f\u662f\u6709\u6d88\u8017\u7684\uff0c\u6709\u6ca1\u6709\u66f4\u597d\u7684\u529e\u6cd5\u8ba9\u6bcf\u4e2a\u7ebf\u7a0b\u7ade\u4e89\u9501\u7684\u6b21\u6570\u5c3d\u53ef\u80fd\u51cf\u5c11\u5462\uff1f<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u53ef\u4ee5\u901a\u8fc7tryLock(time,TimeUnit)\u5148\u8ba9\u6240\u6709\u7ebf\u7a0b\u5c1d\u8bd5\u83b7\u53d6\u9501<\/li><li>\u5047\u5982\u83b7\u53d6\u9501\u7684\u7ebf\u7a0b\u6267\u884c\u6570\u636e\u5e93\u67e5\u8be2\u7136\u540e\u5c06\u6570\u636e\u66f4\u65b0\u5230\u7f13\u5b58\u6240\u9700\u8981\u7684\u65f6\u95f4\u4e3a1s\uff0c\u90a3\u4e48\u5f53\u5176\u4ed6\u7ebf\u7a0b\u83b7\u53d6\u9501\u65f6\u95f4\u7ed3\u675f\u540e\uff0c\u4f1a\u89e3\u9664\u963b\u585e\u72b6\u6001\u76f4\u63a5\u5f80\u4e0b\u6267\u884c\uff0c\u7136\u540e\u518d\u6b21\u67e5\u8be2\u7f13\u5b58\u7684\u65f6\u5019\u53d1\u73b0\u7f13\u5b58\u6709\u6570\u636e\u4e86\u5c31\u76f4\u63a5\u8fd4\u56de\u3002<\/li><li>\u8fd9\u6837\u8bbe\u8ba1\u7684\u597d\u5904\u5c31\u662f\u628a\u5206\u5e03\u5f0f\u9501\u5728\u67d0\u4e9b\u7279\u5b9a\u7684\u573a\u666f\u4f7f\u5176&#8221;\u4e32\u884c\u53d8\u5e76\u53d1&#8221;\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u4f18\u5316\u9700\u8981\u8c28\u614e\u4f7f\u7528\uff0c\u9632\u6b62\u8d85\u65f6\u5bfc\u81f4\u7684\u5927\u89c4\u6a21\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\u3002\u6bd5\u7adf\u6ca1\u6709\u4efb\u4f55\u65b9\u6848\u662f\u5b8c\u5168\u89e3\u51b3\u95ee\u9898\u7684\uff0c\u4e3b\u8981\u662f\u6839\u636e\u516c\u53f8\u4e1a\u52a1\u800c\u5b9a.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f5: \u89e3\u51b3\u5927\u89c4\u6a21\u7f13\u5b58\u51fb\u7a7f\u5bfc\u81f4\u7ebf\u4e0a\u6570\u636e\u5e93\u538b\u529b\u66b4\u589e<\/h2>\n\n\n\n<p>\u7f13\u5b58\u51fb\u7a7f\/\u7f13\u5b58\u5931\u6548: \u53ef\u80fd\u540c\u4e00\u65f6\u95f4\u70ed\u70b9\u6570\u636e\u5168\u90e8\u8fc7\u671f\u800c\u9020\u6210\u7f13\u5b58\u67e5\u4e0d\u5230\u6570\u636e\uff0c\u8bf7\u6c42\u5c31\u4f1a\u4ece\u6570\u636e\u5e93\u67e5\u8be2\uff0c\u9ad8\u5e76\u53d1\u60c5\u51b5\u4e0b\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u538b\u529b<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u5bf9\u4e8e\u8fd9\u4e2a\u573a\u666f\uff0c\u53ef\u4ee5\u7ed9\u6570\u636e\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u65f6\uff0c\u4e0d\u8981\u5c06\u6240\u6709\u7f13\u5b58\u6570\u636e\u7684\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u4e3a\u76f8\u540c\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u6700\u597d\u53ef\u4ee5\u7ed9\u6bcf\u4e2a\u6570\u636e\u7684\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u4e00\u4e2a\u968f\u673a\u6570\uff0c\u4fdd\u8bc1\u6570\u636e\u5728\u4e0d\u540c\u7684\u65f6\u95f4\u6bb5\u8fc7\u671f\u3002<\/li><\/ul>\n\n\n\n<p>\u4ee3\u7801\u6848\u4f8b<em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\nprivate Integer genProductCacheTimeout() {\n  \/\/\u52a0\u968f\u673a\u8d85\u65f6\u673a\u5236\u89e3\u51b3\u7f13\u5b58\u6279\u91cf\u5931\u6548(\u51fb\u7a7f)\u95ee\u9898\n  return PRODUCT_CACHE_TIMEOUT + new Random().nextInt(5) * 60 * 60;\n}\n\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f6: \u9ed1\u5ba2\u5de5\u8d44\u5bfc\u81f4\u7f13\u5b58\u7a7f\u900f\u7ebf\u4e0a\u6570\u636e\u5e93\u5b95\u673a<\/h2>\n\n\n\n<p>\u7f13\u5b58\u7a7f\u900f: \u5982\u679c\u9ed1\u5ba2\u901a\u8fc7\u811a\u672c\u6587\u4ef6\u4e0d\u505c\u7684\u4f20\u4e00\u4e9b\u4e0d\u5b58\u5728\u7684\u53c2\u6570\u5237\u7f51\u7ad9\u7684\u63a5\u53e3\uff0c\u800c\u8fd9\u79cd\u5783\u573e\u53c2\u6570\u5728\u7f13\u5b58\u548c\u6570\u636e\u5e93\u53c8\u4e0d\u5b58\u5728\uff0c\u8fd9\u6837\u5c31\u4f1a\u4e00\u76f4\u5730\u67e5\u6570\u636e\u5e93\uff0c\u6700\u7ec8\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5e93\u5e76\u53d1\u91cf\u8fc7\u5927\u800c\u5361\u6b7b\u5b95\u673a\u3002<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u7f51\u5173\u9650\u6d41\u3002Nginx\u3001Sentinel\u3001Hystrix\u90fd\u53ef\u4ee5\u5b9e\u73b0<\/li><li>\u4ee3\u7801\u5c42\u9762\u3002\u53ef\u4ee5\u4f7f\u7528\u591a\u7ea7\u7f13\u5b58\uff0c\u6bd4\u5982\u4e00\u7ea7\u7f13\u5b58\u91c7\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u4e8c\u7ea7\u7f13\u5b58\u53ef\u4ee5\u4f7f\u7528guava\u4e2d\u7684Cache\uff0c\u4e09\u7ea7\u7f13\u5b58\u4f7f\u7528Redis\uff0c\u4e3a\u4ec0\u4e48\u4e00\u7ea7\u7f13\u5b58\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\u5462\uff0c\u5176\u7ed3\u6784\u548cbitmap\u7c7b\u4f3c\uff0c\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u72b6\u6001\uff0c\u80fd\u5b58\u5927\u91cf\u7684key<\/li><\/ul>\n\n\n\n<p>\u5e03\u9686\u8fc7\u6ee4\u5668<\/p>\n\n\n\n<ul><li>\u5e03\u9686\u8fc7\u6ee4\u5668\u5c31\u662f\u4e00\u4e2a\u5927\u578b\u7684\u4f4d\u6570\u7ec4\u548c\u51e0\u4e2a\u4e0d\u4e00\u6837\u7684\u65e0\u504fHash\u51fd\u6570.\u5f53\u5e03\u9686\u8fc7\u6ee4\u5668\u8bf4\u67d0\u4e2a\u503c\u5b58\u5728\u65f6\uff0c\u8fd9\u4e2a\u503c\u53ef\u80fd\u4e0d\u5b58\u5728\uff0c\u5f53\u8bf4\u4e0d\u5b58\u5728\u65f6\uff0c\u90a3\u5c31\u80af\u5b9a\u4e0d\u5b58\u5728\u3002<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"653\" height=\"257\" src=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/11\/image.png\" alt=\"\" class=\"wp-image-4007\" srcset=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/11\/image.png 653w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/11\/image-300x118.png 300w\" sizes=\"(max-width: 653px) 100vw, 653px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f7: \u5927V\u76f4\u64ad\u5e26\u8d27\u5bfc\u81f4\u7ebf\u4e0a\u5546\u54c1\u7cfb\u7edf\u5d29\u6e83\u539f\u56e0\u5206\u6790<\/h2>\n\n\n\n<p>\u95ee\u9898: \u8fd9\u79cd\u573a\u666f\u53ef\u80fd\u662f\u5728\u67d0\u4e2a\u65f6\u523b\u628a\u51b7\u95e8\u5546\u54c1\u4e00\u4e0b\u5b50\u53d8\u6210\u4e86\u70ed\u95e8\u5546\u54c1\u3002\u56e0\u4e3a\u51b7\u95e8\u7684\u6570\u636e\u53ef\u80fd\u5728\u7f13\u5b58\u65f6\u95f4\u8fc7\u671f\u5c31\u5220\u9664\uff0c\u800c\u6b64\u65f6\u521a\u597d\u6709\u5927\u91cf\u8bf7\u6c42\uff0c\u6bd4\u5982\u76f4\u64ad\u671f\u95f4\u63a8\u9001\u4e00\u4e2a\u5546\u54c1\u8fde\u63a5\uff0c\u5047\u5982\u540c\u65f6\u6709\u51e0\u5341\u4e07\u4eba\u62a2\u8d2d\uff0c\u800c\u7f13\u5b58\u6ca1\u6709\u7684\u8bdd\uff0c\u610f\u5473\u7740\u6240\u6709\u7684\u8bf7\u6c42\u5168\u90e8\u8fbe\u5230\u4e86\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\uff0c\u800c\u5bf9\u4e8e\u6570\u636e\u5e93\u5355\u8282\u70b9\u652f\u6491\u5e76\u53d1\u91cf\u4e5f\u5c31\u4e0d\u52301w\uff0c\u6b64\u65f6\u8fd9\u4e48\u5927\u7684\u8bf7\u6c42\u91cf\uff0c\u80af\u5b9a\u4f1a\u628a\u6570\u636e\u5e93\u6574\u5b95\u673a(\u8fd9\u79cd\u573a\u666f\u6bd4\u8f83\u5c11\uff0c\u4f46\u662f\u5c0f\u6982\u7387\u8fd8\u662f\u4f1a\u6709)<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u53ef\u4ee5\u901a\u8fc7tryLock(time,TimeUnit)\u5148\u8ba9\u6240\u6709\u7ebf\u7a0b\u5c1d\u8bd5\u83b7\u53d6\u9501<\/li><li>\u5047\u5982\u83b7\u53d6\u9501\u7684\u7ebf\u7a0b\u6267\u884c\u6570\u636e\u5e93\u67e5\u8be2\u7136\u540e\u5c06\u6570\u636e\u66f4\u65b0\u5230\u7f13\u5b58\u6240\u9700\u8981\u7684\u65f6\u95f4\u4e3a1s\uff0c\u90a3\u4e48\u5f53\u5176\u4ed6\u7ebf\u7a0b\u83b7\u53d6\u9501\u65f6\u95f4\u7ed3\u675f\u540e\uff0c\u4f1a\u89e3\u9664\u963b\u585e\u72b6\u6001\u76f4\u63a5\u5f80\u4e0b\u6267\u884c\uff0c\u7136\u540e\u518d\u6b21\u67e5\u8be2\u7f13\u5b58\u7684\u65f6\u5019\u53d1\u73b0\u7f13\u5b58\u6709\u6570\u636e\u4e86\u5c31\u76f4\u63a5\u8fd4\u56de\u3002<\/li><li>\u8fd9\u6837\u8bbe\u8ba1\u7684\u597d\u5904\u5c31\u662f\u628a\u5206\u5e03\u5f0f\u9501\u5728\u67d0\u4e9b\u7279\u5b9a\u7684\u573a\u666f\u4f7f\u5176&#8221;\u4e32\u884c\u53d8\u5e76\u53d1&#8221;\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u4f18\u5316\u9700\u8981\u8c28\u614e\u4f7f\u7528\uff0c\u9632\u6b62\u8d85\u65f6\u5bfc\u81f4\u7684\u5927\u89c4\u6a21\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\u3002\u6bd5\u7adf\u6ca1\u6709\u4efb\u4f55\u65b9\u6848\u662f\u5b8c\u5168\u89e3\u51b3\u95ee\u9898\u7684\uff0c\u4e3b\u8981\u662f\u6839\u636e\u516c\u53f8\u4e1a\u52a1\u800c\u5b9a.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f8: Redis\u5206\u5e03\u5f0f\u9501\u89e3\u51b3\u7f13\u5b58\u4e0e\u6570\u636e\u5e93\u53cc\u5199\u4e0d\u4e00\u81f4\u95ee\u9898\u5b9e\u6218<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/upload-images.jianshu.io\/upload_images\/26522304-f5942f3270f470a5.jpg?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/720\/format\/webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>23.jpg<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u91cd\u5165\u9501\u4fdd\u8bc1\u5e76\u53d1\u5b89\u5168\u3002\u901a\u5e38\u8bf4\u5728\u5206\u5e03\u5f0f\u9501\u4e2d\u518d\u52a0\u4e00\u628a\u9501\uff0c\u9501\u592a\u91cd\uff0c\u6027\u80fd\u4e0d\u662f\u5f88\u597d\uff0c\u8fd8\u6709\u4f18\u5316\u7a7a\u95f4<\/li><li>\u5206\u5e03\u5f0f\u8bfb\u5199\u9501(ReadWriteLock)\uff0c\u5b9e\u73b0\u673a\u5236\u548cReentranReadWriteLock\u4e00\u76f4\uff0c\u9002\u5408\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f\uff0c\u6ce8\u610f\u8bfb\u5199\u9501\u7684key\u5f97\u4e00\u81f4<\/li><li>\u4f7f\u7528canal\u901a\u8fc7\u76d1\u542cbinlog\u65e5\u5fd7\u53ca\u65f6\u53bb\u4fee\u6539\u7f13\u5b58\uff0c\u4f46\u662f\u5f15\u5165\u4e2d\u95f4\u4ef6\uff0c\u589e\u52a0\u7cfb\u7edf\u7684\u7ef4\u62a4\u5ea6<\/li><\/ul>\n\n\n\n<p>Lua\u811a\u672c\u8bbe\u7f6e\u8bfb\u5199\u9501<em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>local mode = redis.call('hget', KEYS&#91;1], 'mode');\nif (mode == false) \nthen redis.call('hset', KEYS&#91;1], 'mode', 'read'); \nredis.call('hset', KEYS&#91;1], ARGV&#91;2], 1); \nredis.call('set', KEYS&#91;2] .. ':1', 1); \nredis.call('pexpire', KEYS&#91;2] .. ':1', ARGV&#91;1]);\nredis.call('pexpire', KEYS&#91;1], ARGV&#91;1]); \nreturn nil; \nend; \nif (mode == 'read') or (mode == 'write' and redis.call('hexists', KEYS&#91;1], ARGV&#91;3]) == 1) \nthen local ind = redis.call('hincrby', KEYS&#91;1], ARGV&#91;2], 1); \nlocal key = KEYS&#91;2] .. ':' .. ind;\nredis.call('set', key, 1); \nredis.call('pexpire', key, ARGV&#91;1]); redis.call('pexpire', KEYS&#91;1], ARGV&#91;1]); \nreturn nil; \nend;\nreturn redis.call('pttl', KEYS&#91;1]);\n\n<\/code><\/pre>\n\n\n\n<p>ReadWriteLock\u4ee3\u7801\u6848\u4f8b<em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Transactional\npublic Product update(Product product) {\n  Product productResult = null;\n  \/\/RLock productUpdateLock = redisson.getLock(LOCK_PRODUCT_UPDATE_PREFIX + product.getId());\n  RReadWriteLock productUpdateLock = redisson.getReadWriteLock(LOCK_PRODUCT_UPDATE_PREFIX + product.getId());\n  \/\/ \u6dfb\u52a0\u5199\u9501\n  RLock writeLock = productUpdateLock.writeLock();\n  \/\/\u52a0\u5206\u5e03\u5f0f\u5199\u9501\u89e3\u51b3\u7f13\u5b58\u53cc\u5199\u4e0d\u4e00\u81f4\u95ee\u9898\n  writeLock.lock();\n  try {\n      productResult = productDao.update(product);\n      redisUtil.set(RedisKeyPrefixConst.PRODUCT_CACHE + productResult.getId(), JSON.toJSONString(productResult),\n      genProductCacheTimeout(), TimeUnit.SECONDS);\n   } finally {\n          writeLock.unlock();\n   }\n  return productResult;\n}\n\npublic Product get(Long productId) {\n    Product product = null;\n    String productCacheKey = RedisKeyPrefixConst.PRODUCT_CACHE + productId;\n\n    \/\/\u4ece\u7f13\u5b58\u91cc\u67e5\u6570\u636e\n    product = getProductFromCache(productCacheKey);\n    if (product != null) {\n        return product;\n    }\n\n    \/\/\u52a0\u5206\u5e03\u5f0f\u9501\u89e3\u51b3\u70ed\u70b9\u7f13\u5b58\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\n    RLock hotCreateCacheLock = redisson.getLock(LOCK_PRODUCT_HOT_CACHE_CREATE_PREFIX + productId);\n    hotCreateCacheLock.lock();\n    \/\/ \u8fd9\u4e2a\u4f18\u5316\u8c28\u614e\u4f7f\u7528\uff0c\u9632\u6b62\u8d85\u65f6\u5bfc\u81f4\u7684\u5927\u89c4\u6a21\u5e76\u53d1\u91cd\u5efa\u95ee\u9898\n    \/\/ hotCreateCacheLock.tryLock(1, TimeUnit.SECONDS);\n    try {\n        product = getProductFromCache(productCacheKey);\n        if (product != null) {\n            return product;\n        }\n\n        \/\/RLock productUpdateLock = redisson.getLock(LOCK_PRODUCT_UPDATE_PREFIX + productId);\n        RReadWriteLock productUpdateLock = redisson.getReadWriteLock(LOCK_PRODUCT_UPDATE_PREFIX + productId);\n        \/\/ \u6dfb\u52a0\u8bfb\u9501\n        RLock rLock = productUpdateLock.readLock();\n        \/\/\u52a0\u5206\u5e03\u5f0f\u8bfb\u9501\u89e3\u51b3\u7f13\u5b58\u53cc\u5199\u4e0d\u4e00\u81f4\u95ee\u9898\n        rLock.lock();\n        try {\n            product = productDao.get(productId);\n            if (product != null) {\n                redisUtil.set(productCacheKey, JSON.toJSONString(product),\n                        genProductCacheTimeout(), TimeUnit.SECONDS);\n            } else {\n                \/\/\u8bbe\u7f6e\u7a7a\u7f13\u5b58\u89e3\u51b3\u7f13\u5b58\u7a7f\u900f\u95ee\u9898\n                redisUtil.set(productCacheKey, EMPTY_CACHE, genEmptyCacheTimeout(), TimeUnit.SECONDS);\n            }\n        } finally {\n            rLock.unlock();\n        }\n    } finally {\n        hotCreateCacheLock.unlock();\n    }\n\n    return product;\n}\n\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f9: \u5927\u4fc3\u538b\u529b\u66b4\u589e\u5bfc\u81f4\u5206\u5e03\u5f0f\u9501\u4e32\u884c\u4e89\u7528\u95ee\u9898\u4f18\u5316<\/h2>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u53ef\u4ee5\u91c7\u7528\u5206\u6bb5\u9501\uff0c\u548cJDK7\u7684ConcurrentHashMap\u7684\u5b9e\u73b0\u539f\u7406\u5f88\u7c7b\u4f3c\uff0c\u5c06\u4e00\u4e2a\u9501\uff0c\u5206\u6210\u591a\u4e2a\u9501\uff0c\u6bd4\u5982lock\uff0c\u5206\u6210lock_1\u3001lock_2&#8230;<\/li><li>\u7136\u540e\u5c06\u5e93\u5b58\u5e73\u5747\u5206\u644a\u5230\u6bcf\u628a\u9501\uff0c\u8fd9\u6837\u505a\u7684\u76ee\u7684\u662f\u5206\u644a\u5206\u5e03\u5f0f\u9501\u7684\u538b\u529b\uff0c\u672c\u6765\u53ea\u6709\u4e00\u4e2a\u9501\uff0c\u610f\u5473\u7740\u6240\u6709\u7684\u7ebf\u7a0b\u8fdb\u6765\u53ea\u80fd\u4e00\u4e2a\u7ebf\u7a0b\u83b7\u53d6\u5230\u9501\uff0c\u5982\u679c\u5206\u644a\u4e3a10\u628a\u9501\uff0c\u90a3\u4e48\u540c\u4e00\u65f6\u95f4\u53ef\u4ee5\u670910\u4e2a\u7ebf\u7a0b\u540c\u65f6\u83b7\u53d6\u5230\u9501\u5bf9\u540c\u4e00\u4e2a\u5546\u54c1\u8fdb\u884c\u64cd\u4f5c\uff0c\u4e5f\u5c31\u610f\u5473\u7740\u5728\u540c\u7b49\u73af\u5883\u4e0b\uff0c\u5206\u6bb5\u9501\u7684\u6548\u7387\u6bd4\u53ea\u7528\u4e00\u4e2a\u9501\u8981\u9ad8\u5f97\u591a<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f10: \u5229\u7528\u591a\u7ea7\u7f13\u5b58\u89e3\u51b3Redis\u7ebf\u4e0a\u96c6\u7fa4\u7f13\u5b58\u96ea\u5d29\u95ee\u9898<\/h2>\n\n\n\n<p>\u7f13\u5b58\u96ea\u5d29: \u7f13\u5b58\u652f\u6491\u4e0d\u4f4f\u6216\u8005\u5b95\u673a\uff0c\u7136\u540e\u5927\u91cf\u8bf7\u6c42\u6d8c\u5165\u6570\u636e\u5e93\u3002<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u7f51\u5173\u9650\u6d41\u3002Nginx\u3001Sentinel\u3001Hystrix\u90fd\u53ef\u4ee5\u5b9e\u73b0<\/li><li>\u4ee3\u7801\u5c42\u9762\u3002\u53ef\u4ee5\u4f7f\u7528\u591a\u7ea7\u7f13\u5b58\uff0c\u6bd4\u5982\u4e00\u7ea7\u7f13\u5b58\u91c7\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u4e8c\u7ea7\u7f13\u5b58\u53ef\u4ee5\u4f7f\u7528guava\u4e2d\u7684Cache\uff0c\u4e09\u7ea7\u7f13\u5b58\u4f7f\u7528Redis\uff0c\u4e3a\u4ec0\u4e48\u4e00\u7ea7\u7f13\u5b58\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\u5462\uff0c\u5176\u7ed3\u6784\u548cbitmap\u7c7b\u4f3c\uff0c\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u72b6\u6001\uff0c\u80fd\u5b58\u5927\u91cf\u7684key<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f11: \u4e00\u6b21\u5fae\u535a\u660e\u663e\u70ed\u70b9\u4e8b\u4ef6\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\u539f\u56e0\u5206\u6790<\/h2>\n\n\n\n<p>\u95ee\u9898: \u6bd4\u5982\u5fae\u535a\u4e0a\u67d0\u4e00\u5929\u67d0\u4e2a\u660e\u661f\u4e8b\u4ef6\u6210\u4e3a\u4e86\u70ed\u70b9\u65b0\u95fb\uff0c\u6b64\u65f6\u5f88\u591a\u5403\u74dc\u7fa4\u4f17\u5168\u90e8\u6d8c\u5165\u8fd9\u4e2a\u70ed\u70b9\uff0c\u5982\u679c\u5e76\u53d1\u6bcf\u79d2\u8fbe\u5230\u51e0\u5341\u4e07\u751a\u81f3\u4e0a\u767e\u4e07\u7684\u5e76\u53d1\u91cf\uff0c\u4f46\u662fRedis\u670d\u52a1\u5668\u5355\u8282\u70b9\u53ea\u80fd\u652f\u6491\u5e76\u53d110w\u800c\u5df2\uff0c\u90a3\u4e48\u53ef\u80fd\u56e0\u4e3a\u8fd9\u4e48\u9ad8\u7684\u5e76\u53d1\u91cf\u5bfc\u81f4\u5f88\u591a\u8bf7\u6c42\u5361\u6b7b\u5728\u90a3\uff0c\u8981\u77e5\u9053\u6211\u4eec\u5176\u4ed6\u4e1a\u52a1\u670d\u52a1\u4e5f\u4f1a\u7528\u5230Redis\uff0c\u4e00\u65e6Redis\u5361\u6b7b\uff0c\u5c31\u4f1a\u5f71\u54cd\u5230\u5176\u4ed6\u4e1a\u52a1\uff0c\u5bfc\u81f4\u6574\u4e2a\u4e1a\u52a1\u762b\u75ea\uff0c\u8fd9\u5c31\u662f\u5178\u578b\u7684\u7f13\u5b58\u96ea\u5d29\u95ee\u9898<\/p>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848: \u53c2\u8003\u573a\u666f10<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u573a\u666f12: \u5927\u5382\u5bf9\u70ed\u70b9\u6570\u636e\u5904\u7406\u65b9\u6848<\/h2>\n\n\n\n<p>\u89e3\u51b3\u65b9\u6848<\/p>\n\n\n\n<ul><li>\u5982\u679c\u6309\u7167\u573a\u666f10\u7684\u65b9\u6848\u53bb\u5b9e\u73b0\uff0c\u9700\u8981\u8003\u8651\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898\uff0c\u8fd9\u6837\u5c31\u4e0d\u5f97\u4e0d\u6bcf\u6b21\u5bf9\u6570\u636e\u8fdb\u884c\u589e\u52a0\u3001\u5220\u9664\u3001\u66f4\u65b0\u90fd\u8981\u7acb\u9a6c\u901a\u77e5\u5176\u4ed6\u8282\u70b9\u66f4\u65b0\u6570\u636e\uff0c\u80fd\u505a\u5230\u53ca\u65f6\u66f4\u65b0\u6570\u636e\u7684\u65b9\u6848\u53ef\u80fd\u5c31\u662f\uff1aRedis\u53d1\u5e03\/\u8ba2\u9605\u3001MQ\u7b49<\/li><li>\u867d\u7136\u8bf4\u8fd9\u4e9b\u65b9\u6848\u5b9e\u73b0\u4e5f\u53ef\u4ee5\uff0c\u4f46\u662f\u4e0d\u53ef\u907f\u514d\u7684\u6211\u4eec\u9700\u8981\u518d\u7ef4\u62a4\u76f8\u5173\u7684\u4e2d\u95f4\u4ef6\uff0c\u63d0\u9ad8\u4e86\u7ef4\u62a4\u6210\u672c<\/li><li>\u76ee\u524d\u5927\u5382\u5bf9\u4e8e\u70ed\u70b9\u6570\u636e\u4e13\u95e8\u4f1a\u6709\u4e00\u4e2a\u7c7b\u4f3c\u4e8e\u70ed\u70b9\u7f13\u5b58\u7cfb\u7edf\u6765\u7ef4\u62a4\uff0c\u6240\u6709\u7684web\u5e94\u7528\u53ea\u9700\u8981\u76d1\u542c\u8fd9\u4e2a\u7cfb\u7edf\uff0c\u53ea\u8981\u6709\u70ed\u70b9\u65f6\uff0c\u76f4\u63a5\u66f4\u65b0\u7f13\u5b58\uff0c\u8fd9\u6837\u65e2\u80fd\u51cf\u5c11\u4ee3\u7801\u8026\u5408\uff0c\u8fd8\u80fd\u66f4\u597d\u7684\u7ef4\u62a4\u70ed\u70b9\u6570\u636e\u3002<\/li><li>\u90a3\u4e48\u70ed\u70b9\u6570\u636e\u6765\u6e90\u600e\u4e48\u83b7\u53d6\u5462\uff1f\u53ef\u4ee5\u5728\u8bbe\u8ba1\u67e5\u8be2\u7684\u63a5\u53e3\u4f7f\u7528\u7c7b\u4f3c\u4e8eSpring AOP\u7684\u65b9\u5f0f\uff0c\u6bcf\u6b21\u67e5\u8be2\u5c31\u628a\u6570\u636e\u4f20\u9001\u5230\u70ed\u70b9\u6570\u636e\uff0c\u4e00\u822c\u5927\u5382\u90fd\u4f1a\u6709\u6570\u636e\u5206\u6790\u5c97\u4f4d\uff0c\u6839\u636e\u70ed\u70b9\u89c4\u5219\u5c06\u6570\u636e\u5206\u7c7b<\/li><\/ul>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u4f5c\u8005\uff1a\u67ab\u5ea6\u67da\u5b50<br>\u539f\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Fjuejin.cn%2Fpost%2F7095768648551235598\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/juejin.cn\/post\/7095768648551235598<\/a><\/p><\/blockquote>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u5f00\u4e00\u4e2a\u9898\u76ee\uff0c\u665a\u70b9\u4e86\u89e3\u4e0b 1\u3001Redis\u4e3b\u4ece\u5207\u6362\u5bfc\u81f4\u5206\u5e03\u5f0f\u9501\u4e22\u5931\u95ee\u9898\u662f\u600e\u4e48\u56de\u4e8b\uff1f 2\u3001Redlock\u5982\u4f55\u89e3\u51b3R [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[51,257],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3981"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3981"}],"version-history":[{"count":16,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3981\/revisions"}],"predecessor-version":[{"id":4012,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3981\/revisions\/4012"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}