{"id":195999,"date":"2024-11-13T19:41:19","date_gmt":"2024-11-13T11:41:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195999\/"},"modified":"2024-11-13T19:41:21","modified_gmt":"2024-11-13T11:41:21","slug":"%e5%b1%95%e7%a4%baredis%e7%9a%84%e5%88%86%e7%89%87%e7%ae%97%e6%b3%95%e4%b9%8b%e7%be%8e%ef%bc%88redis%e7%9a%84%e5%88%86%e7%89%87%e7%ae%97%e6%b3%95%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195999\/","title":{"rendered":"\u5c55\u793aRedis\u7684\u5206\u7247\u7b97\u6cd5\u4e4b\u7f8e\uff08redis\u7684\u5206\u7247\u7b97\u6cd5\uff09"},"content":{"rendered":"

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\u4ec0\u9ebc\u662fRedis\u5206\u7247\uff1f<\/h2>\n

\u5206\u7247\uff08Sharding\uff09\u662f\u5c07\u6578\u64da\u5206\u6563\u5230\u591a\u500b\u6578\u64da\u5eab\u5be6\u4f8b\u4e2d\u7684\u904e\u7a0b\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u3002\u5728Redis\u4e2d\uff0c\u5206\u7247\u5141\u8a31\u7528\u6236\u5c07\u6578\u64da\u5206\u4f48\u5728\u591a\u500bRedis\u5be6\u4f8b\u4e0a\uff0c\u5f9e\u800c\u6e1b\u5c11\u55ae\u500b\u5be6\u4f8b\u7684\u8ca0\u8f09\uff0c\u4e26\u63d0\u9ad8\u6574\u9ad4\u7cfb\u7d71\u7684\u541e\u5410\u91cf\u3002<\/p>\n

Redis\u7684\u5206\u7247\u7b97\u6cd5<\/h2>\n

Redis\u7684\u5206\u7247\u7b97\u6cd5\u4e3b\u8981\u6709\u5169\u7a2e\uff1a\u54c8\u5e0c\u5206\u7247\u548c\u7bc4\u570d\u5206\u7247\u3002<\/p>\n

\u54c8\u5e0c\u5206\u7247<\/h3>\n

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\nfunction getShard(key) {\n    const hash = hashFunction(key);\n    return hash % numberOfShards;\n}\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c`hashFunction`\u662f\u7528\u4f86\u8a08\u7b97\u9375\u7684\u54c8\u5e0c\u503c\u7684\u51fd\u6578\uff0c\u800c`numberOfShards`\u5247\u662f\u5206\u7247\u7684\u7e3d\u6578\u3002\u9019\u6a23\uff0c\u901a\u904e\u7c21\u55ae\u7684\u6a21\u904b\u7b97\uff0c\u6211\u5011\u53ef\u4ee5\u78ba\u5b9a\u6bcf\u500b\u9375\u61c9\u8a72\u5b58\u5132\u5728\u54ea\u500b\u5206\u7247\u4e2d\u3002<\/p>\n
\u7bc4\u570d\u5206\u7247<\/h3>\n
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\nfunction getShard(key) {\n    if (key < 'N') {\n        return shard1; \/\/ A-M\n    } else {\n        return shard2; \/\/ N-Z\n    }\n}\n<\/code><\/pre>\n
Redis Cluster\u4e2d\u7684\u5206\u7247<\/h2>\n
Redis Cluster\u662f\u4e00\u7a2e\u539f\u751f\u7684\u5206\u7247\u89e3\u6c7a\u65b9\u6848\uff0c\u5141\u8a31\u7528\u6236\u5728\u591a\u500bRedis\u5be6\u4f8b\u4e4b\u9593\u81ea\u52d5\u5206\u914d\u6578\u64da\u3002Redis Cluster\u4f7f\u7528\u4e00\u7a2e\u7a31\u70ba\u201c\u69fd\u201d\u7684\u6982\u5ff5\uff0c\u5c07\u6578\u64da\u5206\u914d\u523016384\u500b\u69fd\u4e2d\u3002\u6bcf\u500b\u9375\u90fd\u6703\u88ab\u6620\u5c04\u5230\u4e00\u500b\u69fd\uff0c\u7136\u5f8c\u9019\u4e9b\u69fd\u6703\u88ab\u5206\u914d\u5230\u4e0d\u540c\u7684\u7bc0\u9ede\u4e0a\u3002<\/p>\n
\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u52e2\u5728\u65bc\u5b83\u7c21\u5316\u4e86\u5206\u7247\u7684\u7ba1\u7406\uff0c\u4e26\u4e14\u80fd\u5920\u5728\u7bc0\u9ede\u5931\u6548\u6642\u81ea\u52d5\u91cd\u65b0\u5206\u914d\u69fd\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u53ef\u7528\u6027\u548c\u5bb9\u932f\u80fd\u529b\u3002<\/p>\n
\u5206\u7247\u7684\u6311\u6230<\/h2>\n
\u5118\u7ba1Redis\u7684\u5206\u7247\u7b97\u6cd5\u63d0\u4f9b\u4e86\u8a31\u591a\u512a\u52e2\uff0c\u4f46\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u4e5f\u9762\u81e8\u4e00\u4e9b\u6311\u6230\u3002\u4f8b\u5982\uff0c\u7576\u9700\u8981\u589e\u52a0\u6216\u6e1b\u5c11\u5206\u7247\u6578\u91cf\u6642\uff0c\u6578\u64da\u7684\u91cd\u65b0\u5206\u914d\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u6b64\u5916\uff0c\u54c8\u5e0c\u78b0\u649e\u548c\u6578\u64da\u4e0d\u5747\u52fb\u5206\u4f48\u4e5f\u53ef\u80fd\u5f71\u97ff\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
Redis\u7684\u5206\u7247\u7b97\u6cd5\u5c55\u793a\u4e86\u5176\u5728\u9ad8\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u65b9\u9762\u7684\u512a\u96c5\u8a2d\u8a08\u3002\u7121\u8ad6\u662f\u54c8\u5e0c\u5206\u7247\u9084\u662f\u7bc4\u570d\u5206\u7247\uff0c\u9019\u4e9b\u65b9\u6cd5\u90fd\u80fd\u6709\u6548\u5730\u7ba1\u7406\u5927\u91cf\u6578\u64da\uff0c\u4e26\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u904b\u884c\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u7406\u89e3\u548c\u61c9\u7528\u9019\u4e9b\u5206\u7247\u6280\u8853\u5c07\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u6578\u64da\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u6216\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u652f\u6301\u60a8\u7684Redis\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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