{"id":124651,"date":"2024-10-25T16:00:24","date_gmt":"2024-10-25T08:00:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/124651\/"},"modified":"2024-10-25T16:00:24","modified_gmt":"2024-10-25T08:00:24","slug":"redis-%e9%9b%86%e7%be%a4%e4%b8%ad%e7%9a%84%e5%93%88%e5%b8%8c%e6%a7%bd%e8%a7%a3%e6%9e%90%e5%85%b6%e6%a6%82%e5%bf%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/124651\/","title":{"rendered":"Redis \u96c6\u7fa4\u4e2d\u7684\u54c8\u5e0c\u69fd\u89e3\u6790\u5176\u6982\u5ff5"},"content":{"rendered":"<h1 id=\"redis-%e9%9b%86%e7%be%a4%e4%b8%ad%e7%9a%84%e5%93%88%e5%b8%8c%e6%a7%bd%e8%a7%a3%e6%9e%90%e5%85%b6%e6%a6%82%e5%bf%b5-IIiCIkSwgA\">Redis \u96c6\u7fa4\u4e2d\u7684\u54c8\u5e0c\u69fd\u89e3\u6790\u5176\u6982\u5ff5<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u8655\u7406\u74b0\u5883\u4e2d\uff0cRedis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5df2\u7d93\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u3002\u7279\u5225\u662f\u5728\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u53ef\u64f4\u5c55\u6027\u7684\u61c9\u7528\u4e2d\uff0cRedis \u96c6\u7fa4\u7684\u6982\u5ff5\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u96c6\u7fa4\u4e2d\u7684\u54c8\u5e0c\u69fd\uff08hash slot\uff09\u53ca\u5176\u76f8\u95dc\u6982\u5ff5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%93%88%e5%b8%8c%e6%a7%bd%ef%bc%9f-IIiCIkSwgA\">\u4ec0\u9ebc\u662f\u54c8\u5e0c\u69fd\uff1f<\/h2>\n<p>\u54c8\u5e0c\u69fd\u662f Redis \u96c6\u7fa4\u4e2d\u7528\u4f86\u5206\u914d\u548c\u7ba1\u7406\u6578\u64da\u7684\u4e00\u7a2e\u6a5f\u5236\u3002Redis \u96c6\u7fa4\u5c07\u6240\u6709\u7684\u9375\uff08key\uff09\u6620\u5c04\u5230 0 \u5230 16383 \u7684 16384 \u500b\u54c8\u5e0c\u69fd\u4e2d\u3002\u9019\u610f\u5473\u8457\u6bcf\u500b\u9375\u90fd\u6703\u88ab\u5206\u914d\u5230\u4e00\u500b\u7279\u5b9a\u7684\u54c8\u5e0c\u69fd\uff0c\u5f9e\u800c\u78ba\u4fdd\u6578\u64da\u7684\u5747\u52fb\u5206\u4f48\u3002<\/p>\n<h3 id=\"%e5%93%88%e5%b8%8c%e6%a7%bd%e7%9a%84%e8%a8%88%e7%ae%97-IIiCIkSwgA\">\u54c8\u5e0c\u69fd\u7684\u8a08\u7b97<\/h3>\n<p>\u5728 Redis \u4e2d\uff0c\u54c8\u5e0c\u69fd\u7684\u8a08\u7b97\u662f\u901a\u904e\u5c0d\u9375\u9032\u884c\u54c8\u5e0c\u904b\u7b97\u4f86\u5be6\u73fe\u7684\u3002\u5177\u9ad4\u4f86\u8aaa\uff0cRedis \u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f\u4f86\u8a08\u7b97\u54c8\u5e0c\u69fd\uff1a<\/p>\n<pre><code>hash_slot = CRC16(key) mod 16384<\/code><\/pre>\n<p>\u9019\u88e1\uff0cCRC16 \u662f\u4e00\u7a2e\u54c8\u5e0c\u7b97\u6cd5\uff0c\u80fd\u5920\u5c07\u4efb\u610f\u9577\u5ea6\u7684\u9375\u8f49\u63db\u70ba\u4e00\u500b 16 \u4f4d\u7684\u6574\u6578\u3002\u7136\u5f8c\uff0c\u901a\u904e\u53d6\u6a21\u904b\u7b97\u5c07\u5176\u6620\u5c04\u5230 0 \u5230 16383 \u7684\u7bc4\u570d\u5167\u3002<\/p>\n<h2 id=\"%e5%93%88%e5%b8%8c%e6%a7%bd%e7%9a%84%e4%bd%9c%e7%94%a8-IIiCIkSwgA\">\u54c8\u5e0c\u69fd\u7684\u4f5c\u7528<\/h2>\n<p>\u54c8\u5e0c\u69fd\u5728 Redis \u96c6\u7fa4\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\uff0c\u4e3b\u8981\u9ad4\u73fe\u5728\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5206\u4f48\uff1a<\/strong>\u54c8\u5e0c\u69fd\u78ba\u4fdd\u4e86\u6578\u64da\u5728\u96c6\u7fa4\u4e2d\u7684\u5747\u52fb\u5206\u4f48\uff0c\u5f9e\u800c\u907f\u514d\u4e86\u67d0\u4e9b\u7bc0\u9ede\u904e\u8f09\u7684\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u9ad8\u53ef\u7528\u6027\uff1a<\/strong>\u7576\u67d0\u500b\u7bc0\u9ede\u5931\u6548\u6642\uff0c\u5176\u4ed6\u7bc0\u9ede\u53ef\u4ee5\u901a\u904e\u54c8\u5e0c\u69fd\u7684\u6620\u5c04\u95dc\u4fc2\u4f86\u91cd\u65b0\u5206\u914d\u6578\u64da\uff0c\u5f9e\u800c\u4fdd\u8b49\u7cfb\u7d71\u7684\u9ad8\u53ef\u7528\u6027\u3002<\/li>\n<li><strong>\u7c21\u5316\u8def\u7531\uff1a<\/strong>\u54c8\u5e0c\u69fd\u4f7f\u5f97 Redis \u96c6\u7fa4\u80fd\u5920\u5feb\u901f\u5b9a\u4f4d\u67d0\u500b\u9375\u6240\u5c6c\u7684\u7bc0\u9ede\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u6578\u64da\u8a2a\u554f\u7684\u6548\u7387\u3002<\/li>\n<\/ul>\n<h3 id=\"%e5%93%88%e5%b8%8c%e6%a7%bd%e7%9a%84%e7%ae%a1%e7%90%86-IIiCIkSwgA\">\u54c8\u5e0c\u69fd\u7684\u7ba1\u7406<\/h3>\n<p>\u5728 Redis \u96c6\u7fa4\u4e2d\uff0c\u54c8\u5e0c\u69fd\u7684\u7ba1\u7406\u662f\u7531\u96c6\u7fa4\u7684\u4e3b\u7bc0\u9ede\u8ca0\u8cac\u7684\u3002\u6bcf\u500b\u4e3b\u7bc0\u9ede\u6703\u8ca0\u8cac\u4e00\u90e8\u5206\u54c8\u5e0c\u69fd\uff0c\u4e26\u4e14\u53ef\u4ee5\u6709\u591a\u500b\u5f9e\u7bc0\u9ede\u4f86\u9032\u884c\u6578\u64da\u7684\u5099\u4efd\u3002\u7576\u9700\u8981\u64f4\u5c55\u96c6\u7fa4\u6642\uff0c\u53ef\u4ee5\u901a\u904e\u91cd\u65b0\u5206\u914d\u54c8\u5e0c\u69fd\u4f86\u5be6\u73fe\u3002<\/p>\n<h4 id=\"%e5%93%88%e5%b8%8c%e6%a7%bd%e7%9a%84%e9%87%8d%e6%96%b0%e5%88%86%e9%85%8d-IIiCIkSwgA\">\u54c8\u5e0c\u69fd\u7684\u91cd\u65b0\u5206\u914d<\/h4>\n<p>\u7576\u96c6\u7fa4\u9700\u8981\u64f4\u5c55\u6216\u7e2e\u6e1b\u6642\uff0c\u54c8\u5e0c\u69fd\u7684\u91cd\u65b0\u5206\u914d\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002Redis \u63d0\u4f9b\u4e86 <code>CLUSTER ADDSLOTS<\/code> \u548c <code>CLUSTER DELSLOTS<\/code> \u547d\u4ee4\u4f86\u6dfb\u52a0\u6216\u522a\u9664\u54c8\u5e0c\u69fd\u3002\u9019\u4e9b\u64cd\u4f5c\u53ef\u4ee5\u5728\u4e0d\u5f71\u97ff\u96c6\u7fa4\u904b\u884c\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\uff0c\u5f9e\u800c\u4fdd\u8b49\u4e86\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e4%b8%ad%e7%9a%84%e8%80%83%e9%87%8f-IIiCIkSwgA\">\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u8003\u91cf<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u5230\u54c8\u5e0c\u69fd\u7684\u5206\u4f48\u5c0d\u6027\u80fd\u7684\u5f71\u97ff\u3002\u4f8b\u5982\uff0c\u7576\u8a2d\u8a08\u6578\u64da\u6a21\u578b\u6642\uff0c\u61c9\u8a72\u76e1\u91cf\u907f\u514d\u5c07\u5927\u91cf\u76f8\u95dc\u7684\u9375\u6620\u5c04\u5230\u540c\u4e00\u500b\u54c8\u5e0c\u69fd\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u55ae\u500b\u7bc0\u9ede\u7684\u8ca0\u64d4\uff0c\u63d0\u9ad8\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-IIiCIkSwgA\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728 Redis \u4e2d\u8a08\u7b97\u54c8\u5e0c\u69fd\uff1a<\/p>\n<pre><code>import redis\n\ndef get_hash_slot(key):\n    return redis.cluster.hashslot(key)\n\nkey = \"example_key\"\nslot = get_hash_slot(key)\nprint(f\"Key '{key}' maps to hash slot: {slot}\")\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IIiCIkSwgA\">\u7e3d\u7d50<\/h2>\n<p>\u54c8\u5e0c\u69fd\u662f Redis \u96c6\u7fa4\u4e2d\u4e00\u500b\u95dc\u9375\u7684\u6982\u5ff5\uff0c\u5b83\u4e0d\u50c5\u78ba\u4fdd\u4e86\u6578\u64da\u7684\u5747\u52fb\u5206\u4f48\uff0c\u9084\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u53ef\u7528\u6027\u548c\u6027\u80fd\u3002\u5728\u8a2d\u8a08\u548c\u5be6\u65bd Redis \u96c6\u7fa4\u6642\uff0c\u7406\u89e3\u54c8\u5e0c\u69fd\u7684\u904b\u4f5c\u539f\u7406\u5c07\u6709\u52a9\u65bc\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u548c\u512a\u5316\u7cfb\u7d71\u6027\u80fd\u3002\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u6216\u5176\u4ed6\u76f8\u95dc\u670d\u52d9\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Redis\u96c6\u7fa4\u4e2d\u7684\u54c8\u5e0c\u69fd\u6982\u5ff5\uff0c\u63a2\u7d22\u5176\u5728\u6570\u636e\u5206\u5e03\u548c\u8d1f\u8f7d\u5747\u8861\u4e2d\u7684\u5173\u952e\u4f5c\u7528\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-124651","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124651","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=124651"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124651\/revisions"}],"predecessor-version":[{"id":124652,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124651\/revisions\/124652"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=124651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=124651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=124651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}