{"id":186002,"date":"2024-11-11T02:17:28","date_gmt":"2024-11-10T18:17:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186002\/"},"modified":"2024-11-11T02:17:29","modified_gmt":"2024-11-10T18:17:29","slug":"%e6%95%b8%e6%93%9a%e5%ba%absharding-lookup%e6%8a%80%e8%a1%93%e6%8e%a2%e8%a8%8e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186002\/","title":{"rendered":"\u6578\u64da\u5eabsharding Lookup\u6280\u8853\u63a2\u8a0e"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%absharding-lookup%e6%8a%80%e8%a1%93%e6%8e%a2%e8%a8%8e-guRCbtlOWz\">\u6578\u64da\u5eabSharding Lookup\u6280\u8853\u63a2\u8a0e<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u589e\u9577\u548c\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u50b3\u7d71\u7684\u6578\u64da\u5eab\u67b6\u69cb\u5f80\u5f80\u7121\u6cd5\u6eff\u8db3\u9700\u6c42\u3002\u9019\u6642\uff0c\u6578\u64da\u5eab\u5206\u7247\uff08Sharding\uff09\u6280\u8853\u61c9\u904b\u800c\u751f\uff0c\u6210\u70ba\u89e3\u6c7a\u5927\u898f\u6a21\u6578\u64da\u5b58\u5132\u548c\u67e5\u8a62\u554f\u984c\u7684\u4e00\u7a2e\u6709\u6548\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%absharding%ef%bc%9f-guRCbtlOWz\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eabSharding\uff1f<\/h2>\n<p>\u6578\u64da\u5eabSharding\u662f\u5c07\u6578\u64da\u5206\u6563\u5230\u591a\u500b\u6578\u64da\u5eab\u5be6\u4f8b\u4e2d\u7684\u4e00\u7a2e\u6280\u8853\u3002\u6bcf\u500b\u5be6\u4f8b\u7a31\u70ba\u4e00\u500b\u201cShard\u201d\uff0c\u5b83\u5011\u5171\u540c\u7d44\u6210\u4e00\u500b\u5b8c\u6574\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u56e0\u70ba\u67e5\u8a62\u53ef\u4ee5\u4e26\u884c\u8655\u7406\uff0c\u4e26\u4e14\u6bcf\u500bShard\u53ea\u9700\u8655\u7406\u5176\u81ea\u8eab\u7684\u4e00\u90e8\u5206\u6578\u64da\u3002<\/p>\n<h2 id=\"sharding%e7%9a%84%e5%84%aa%e5%8b%a2-guRCbtlOWz\">Sharding\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u53ef\u64f4\u5c55\u6027\uff1a<\/strong>Sharding\u5141\u8a31\u7cfb\u7d71\u6839\u64da\u9700\u6c42\u8f15\u9b06\u64f4\u5c55\u3002\u7576\u6578\u64da\u91cf\u589e\u52a0\u6642\uff0c\u53ef\u4ee5\u901a\u904e\u6dfb\u52a0\u65b0\u7684Shard\u4f86\u64f4\u5c55\u7cfb\u7d71\u3002<\/li>\n<li><strong>\u6027\u80fd\u63d0\u5347\uff1a<\/strong>\u901a\u904e\u5c07\u67e5\u8a62\u5206\u6563\u5230\u591a\u500bShard\uff0c\u7cfb\u7d71\u53ef\u4ee5\u540c\u6642\u8655\u7406\u591a\u500b\u8acb\u6c42\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<li><strong>\u6545\u969c\u9694\u96e2\uff1a<\/strong>\u5982\u679c\u67d0\u500bShard\u51fa\u73fe\u6545\u969c\uff0c\u5176\u4ed6Shard\u4ecd\u7136\u53ef\u4ee5\u6b63\u5e38\u904b\u884c\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"sharding%e7%9a%84%e6%8c%91%e6%88%b0-guRCbtlOWz\">Sharding\u7684\u6311\u6230<\/h2>\n<p>\u5118\u7ba1Sharding\u6709\u8a31\u591a\u512a\u52e2\uff0c\u4f46\u5728\u5be6\u65bd\u904e\u7a0b\u4e2d\u4e5f\u9762\u81e8\u4e00\u4e9b\u6311\u6230\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5206\u4f48\uff1a<\/strong>\u5982\u4f55\u5c07\u6578\u64da\u5747\u52fb\u5730\u5206\u4f48\u5230\u4e0d\u540c\u7684Shard\u4e2d\u662f\u4e00\u500b\u91cd\u8981\u7684\u554f\u984c\u3002\u4e0d\u5747\u52fb\u7684\u6578\u64da\u5206\u4f48\u53ef\u80fd\u5c0e\u81f4\u67d0\u4e9bShard\u904e\u8f09\uff0c\u800c\u5176\u4ed6Shard\u5247\u9592\u7f6e\u3002<\/li>\n<li><strong>\u67e5\u8a62\u8907\u96dc\u6027\uff1a<\/strong>\u7576\u67e5\u8a62\u6d89\u53ca\u591a\u500bShard\u6642\uff0c\u67e5\u8a62\u7684\u8907\u96dc\u6027\u6703\u589e\u52a0\u3002\u9700\u8981\u984d\u5916\u7684\u908f\u8f2f\u4f86\u5408\u4f75\u4f86\u81ea\u4e0d\u540cShard\u7684\u7d50\u679c\u3002<\/li>\n<li><strong>\u4e8b\u52d9\u7ba1\u7406\uff1a<\/strong>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u4e8b\u52d9\u7684\u7ba1\u7406\u8b8a\u5f97\u66f4\u52a0\u8907\u96dc\u3002\u9700\u8981\u8003\u616e\u5982\u4f55\u5728\u591a\u500bShard\u4e4b\u9593\u4fdd\u6301\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"sharding-lookup%e6%8a%80%e8%a1%93-guRCbtlOWz\">Sharding Lookup\u6280\u8853<\/h2>\n<p>Sharding Lookup\u6280\u8853\u662f\u89e3\u6c7aSharding\u7cfb\u7d71\u4e2d\u67e5\u8a62\u554f\u984c\u7684\u4e00\u7a2e\u65b9\u6cd5\u3002\u5b83\u7684\u4e3b\u8981\u76ee\u7684\u662f\u5feb\u901f\u5b9a\u4f4d\u6578\u64da\u6240\u5728\u7684Shard\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684Sharding Lookup\u6280\u8853\uff1a<\/p>\n<h3 id=\"1-%e5%93%88%e5%b8%8c%e5%88%86%e7%89%87-guRCbtlOWz\">1. \u54c8\u5e0c\u5206\u7247<\/h3>\n<p>\u54c8\u5e0c\u5206\u7247\u662f\u6700\u5e38\u898b\u7684Sharding\u65b9\u6cd5\u4e4b\u4e00\u3002\u901a\u904e\u5c0d\u6578\u64da\u7684\u67d0\u500b\u5c6c\u6027\uff08\u5982\u7528\u6236ID\uff09\u9032\u884c\u54c8\u5e0c\u904b\u7b97\uff0c\u5c07\u6578\u64da\u5206\u914d\u5230\u4e0d\u540c\u7684Shard\u4e2d\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u5be6\u73fe\u5747\u52fb\u7684\u6578\u64da\u5206\u4f48\uff0c\u4f46\u5728\u67e5\u8a62\u6642\u9700\u8981\u8a08\u7b97\u54c8\u5e0c\u503c\u4f86\u5b9a\u4f4dShard\u3002<\/p>\n<pre><code>\nfunction getShard(userId) {\n    return userId % numberOfShards;\n}\n<\/code><\/pre>\n<h3 id=\"2-%e7%af%84%e5%9c%8d%e5%88%86%e7%89%87-guRCbtlOWz\">2. \u7bc4\u570d\u5206\u7247<\/h3>\n<p>\u7bc4\u570d\u5206\u7247\u6839\u64da\u6578\u64da\u7684\u7bc4\u570d\u5c07\u6578\u64da\u5206\u914d\u5230\u4e0d\u540c\u7684Shard\u4e2d\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c07\u7528\u6236ID\u57281\u52301000\u7684\u6578\u64da\u653e\u5728Shard 1\uff0c1001\u52302000\u7684\u6578\u64da\u653e\u5728Shard 2\u3002\u9019\u7a2e\u65b9\u6cd5\u5728\u67e5\u8a62\u6642\u53ef\u4ee5\u66f4\u5feb\u5730\u5b9a\u4f4d\u5230Shard\uff0c\u4f46\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u5747\u52fb\u5206\u4f48\u3002<\/p>\n<h3 id=\"3-%e7%9b%ae%e9%8c%84%e6%9f%a5%e6%89%be-guRCbtlOWz\">3. \u76ee\u9304\u67e5\u627e<\/h3>\n<p>\u76ee\u9304\u67e5\u627e\u6280\u8853\u4f7f\u7528\u4e00\u500b\u4e2d\u592e\u76ee\u9304\u4f86\u8a18\u9304\u6bcf\u500bShard\u7684\u6578\u64da\u4f4d\u7f6e\u3002\u7576\u67e5\u8a62\u767c\u751f\u6642\uff0c\u7cfb\u7d71\u9996\u5148\u67e5\u8a62\u76ee\u9304\u4ee5\u7372\u53d6\u6578\u64da\u6240\u5728\u7684Shard\uff0c\u7136\u5f8c\u518d\u9032\u884c\u5be6\u969b\u7684\u67e5\u8a62\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u7c21\u5316\u67e5\u8a62\u904e\u7a0b\uff0c\u4f46\u76ee\u9304\u672c\u8eab\u53ef\u80fd\u6210\u70ba\u6027\u80fd\u74f6\u9838\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-guRCbtlOWz\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eabSharding Lookup\u6280\u8853\u5728\u7576\u4eca\u5927\u6578\u64da\u74b0\u5883\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\u3002\u901a\u904e\u5408\u7406\u7684Sharding\u7b56\u7565\u548c\u67e5\u627e\u6280\u8853\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u3002\u7136\u800c\uff0c\u5be6\u65bdSharding\u4e5f\u9700\u8981\u8003\u616e\u5230\u6578\u64da\u5206\u4f48\u3001\u67e5\u8a62\u8907\u96dc\u6027\u548c\u4e8b\u52d9\u7ba1\u7406\u7b49\u6311\u6230\u3002\u96a8\u8457\u6280\u8853\u7684\u9032\u6b65\uff0c\u672a\u4f86\u7684Sharding\u89e3\u6c7a\u65b9\u6848\u5c07\u6703\u66f4\u52a0\u6210\u719f\uff0c\u70ba\u4f01\u696d\u63d0\u4f9b\u66f4\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u80fd\u529b\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u8a0e\u6578\u64da\u5eabsharding\u7684Lookup\u6280\u8853\uff0c\u5206\u6790\u5176\u539f\u7406\u3001\u512a\u52e2\u53ca\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u8207\u7cfb\u7d71\u6027\u80fd\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-186002","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186002","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=186002"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186002\/revisions"}],"predecessor-version":[{"id":186003,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186002\/revisions\/186003"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}