{"id":163469,"date":"2024-11-04T23:46:20","date_gmt":"2024-11-04T15:46:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163469\/"},"modified":"2024-11-04T23:46:21","modified_gmt":"2024-11-04T15:46:21","slug":"%e8%a7%a3%e6%b1%baredis%e7%b7%a9%e5%ad%98%e6%93%8a%e7%a9%bf%e8%88%87%e7%a9%bf%e9%80%8f%e7%9a%84%e6%9c%80%e4%bd%b3%e6%96%b9%e6%a1%88%ef%bc%88redis-%e7%b7%a9%e5%ad%98%e6%93%8a%e7%a9%bf%e7%a9%bf%e9%80%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163469\/","title":{"rendered":"\u89e3\u6c7aredis\u7de9\u5b58\u64ca\u7a7f\u8207\u7a7f\u900f\u7684\u6700\u4f73\u65b9\u6848\uff08redis \u7de9\u5b58\u64ca\u7a7f\u7a7f\u900f\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%b1%baredis%e7%b7%a9%e5%ad%98%e6%93%8a%e7%a9%bf%e8%88%87%e7%a9%bf%e9%80%8f%e7%9a%84%e6%9c%80%e4%bd%b3%e6%96%b9%e6%a1%88-qmAAGRVZlb\">\u89e3\u6c7aRedis\u7de9\u5b58\u64ca\u7a7f\u8207\u7a7f\u900f\u7684\u6700\u4f73\u65b9\u6848<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u7de9\u5b58\u89e3\u6c7a\u65b9\u6848\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u3002\u7136\u800c\uff0c\u96a8\u8457\u4f7f\u7528\u91cf\u7684\u589e\u52a0\uff0c\u7de9\u5b58\u64ca\u7a7f\u548c\u7de9\u5b58\u7a7f\u900f\u7684\u554f\u984c\u4e5f\u65e5\u76ca\u51f8\u986f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u5169\u7a2e\u554f\u984c\u7684\u6210\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 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id=\"%e7%b7%a9%e5%ad%98%e6%93%8a%e7%a9%bf%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-qmAAGRVZlb\">\u7de9\u5b58\u64ca\u7a7f\u7684\u89e3\u6c7a\u65b9\u6848<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e4%ba%92%e6%96%a5%e9%8e%96-qmAAGRVZlb\">1. \u4f7f\u7528\u4e92\u65a5\u9396<\/h3>\n<p>\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e92\u65a5\u9396\u4f86\u4fdd\u8b77\u6578\u64da\u7684\u52a0\u8f09\u904e\u7a0b\u3002\u7576\u4e00\u500b\u8acb\u6c42\u767c\u73fe\u7de9\u5b58\u4e2d\u6c92\u6709\u6578\u64da\u6642\uff0c\u9996\u5148\u7372\u53d6\u9396\uff0c\u7136\u5f8c\u518d\u53bb\u67e5\u8a62\u6578\u64da\u5eab\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u591a\u500b\u8acb\u6c42\u540c\u6642\u67e5\u8a62\u6578\u64da\u5eab\uff0c\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u58d3\u529b\u3002<\/p>\n<pre><code>\npublic void getData(String key) {\n    String value = redis.get(key);\n    if (value == null) {\n        synchronized (this) {\n            value = redis.get(key);\n            if (value == null) {\n                value = database.get(key);\n                redis.set(key, value);\n            }\n        }\n    }\n    return value;\n}\n<\/code><\/pre>\n<h3 id=\"2-%e8%a8%ad%e7%bd%ae%e5%90%88%e7%90%86%e7%9a%84%e7%b7%a9%e5%ad%98%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-qmAAGRVZlb\">2. \u8a2d\u7f6e\u5408\u7406\u7684\u7de9\u5b58\u904e\u671f\u6642\u9593<\/h3>\n<p>\u5c0d\u65bc\u4e00\u4e9b\u4e0d\u7d93\u5e38\u8b8a\u52d5\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u8f03\u9577\u7684\u7de9\u5b58\u904e\u671f\u6642\u9593\uff0c\u6e1b\u5c11\u7de9\u5b58\u64ca\u7a7f\u7684\u6a5f\u6703\u3002\u5c0d\u65bc\u7d93\u5e38\u8b8a\u52d5\u7684\u6578\u64da\uff0c\u5247\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u77ed\u671f\u7de9\u5b58\uff0c\u4e26\u5728\u6578\u64da\u66f4\u65b0\u6642\u4e3b\u52d5\u66f4\u65b0\u7de9\u5b58\u3002<\/p>\n<h2 id=\"%e7%b7%a9%e5%ad%98%e7%a9%bf%e9%80%8f%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-qmAAGRVZlb\">\u7de9\u5b58\u7a7f\u900f\u7684\u89e3\u6c7a\u65b9\u6848<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%b8%83%e9%9a%86%e9%81%8e%e6%bf%be%e5%99%a8-qmAAGRVZlb\">1. \u4f7f\u7528\u5e03\u9686\u904e\u6ffe\u5668<\/h3>\n<p>\u5e03\u9686\u904e\u6ffe\u5668\u662f\u4e00\u7a2e\u7a7a\u9593\u6548\u7387\u9ad8\u7684\u6578\u64da\u7d50\u69cb\uff0c\u53ef\u4ee5\u7528\u4f86\u5224\u65b7\u67d0\u500b\u5143\u7d20\u662f\u5426\u5728\u96c6\u5408\u4e2d\u3002\u7576\u8acb\u6c42\u5230\u9054\u6642\uff0c\u9996\u5148\u6aa2\u67e5\u5e03\u9686\u904e\u6ffe\u5668\uff0c\u5982\u679c\u904e\u6ffe\u5668\u5224\u65b7\u8a72\u6578\u64da\u4e0d\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u8fd4\u56de\uff0c\u4e0d\u518d\u67e5\u8a62\u6578\u64da\u5eab\u3002<\/p>\n<pre><code>\nif (!bloomFilter.mightContain(key)) {\n    return null; \/\/ \u76f4\u63a5\u8fd4\u56de\uff0c\u907f\u514d\u67e5\u8a62\u6578\u64da\u5eab\n}\n<\/code><\/pre>\n<h3 id=\"2-%e5%b0%8d%e7%84%a1%e6%95%88%e8%ab%8b%e6%b1%82%e9%80%b2%e8%a1%8c%e9%99%90%e6%b5%81-qmAAGRVZlb\">2. \u5c0d\u7121\u6548\u8acb\u6c42\u9032\u884c\u9650\u6d41<\/h3>\n<p>\u5c0d\u65bc\u4f86\u81ea\u540c\u4e00IP\u6216\u7528\u6236\u7684\u983b\u7e41\u8acb\u6c42\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u9650\u6d41\u6a5f\u5236\uff0c\u9632\u6b62\u60e1\u610f\u653b\u64ca\u6216\u7121\u6548\u8acb\u6c42\u5c0d\u7cfb\u7d71\u9020\u6210\u5f71\u97ff\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u58d3\u529b\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-qmAAGRVZlb\">\u7d50\u8ad6<\/h2>\n<p>\u7de9\u5b58\u64ca\u7a7f\u548c\u7de9\u5b58\u7a7f\u900f\u662f\u4f7f\u7528Redis\u6642\u5e38\u898b\u7684\u554f\u984c\uff0c\u4f46\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u65bd\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u9019\u4e9b\u554f\u984c\u5c0d\u7cfb\u7d71\u6027\u80fd\u7684\u5f71\u97ff\u3002\u4f7f\u7528\u4e92\u65a5\u9396\u3001\u5e03\u9686\u904e\u6ffe\u5668\u7b49\u6280\u8853\uff0c\u4e26\u8a2d\u7f6e\u5408\u7406\u7684\u7de9\u5b58\u7b56\u7565\uff0c\u80fd\u5920\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> 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