{"id":121876,"date":"2024-10-25T11:57:23","date_gmt":"2024-10-25T03:57:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/121876\/"},"modified":"2024-10-25T11:57:24","modified_gmt":"2024-10-25T03:57:24","slug":"redis-%e9%9b%86%e7%be%a4%e6%a7%bd%e4%bd%8d%e9%81%8b%e7%ae%97%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e6%95%b8%e6%93%9a%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/121876\/","title":{"rendered":"Redis \u96c6\u7fa4\u69fd\u4f4d\u904b\u7b97\u5be6\u73fe\u5206\u5e03\u5f0f\u6578\u64da\u7ba1\u7406"},"content":{"rendered":"<h1 id=\"redis-%e9%9b%86%e7%be%a4%e6%a7%bd%e4%bd%8d%e9%81%8b%e7%ae%97%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e6%95%b8%e6%93%9a%e7%ae%a1%e7%90%86-JTAUCzGgzE\">Redis \u96c6\u7fa4\u69fd\u4f4d\u904b\u7b97\u5be6\u73fe\u5206\u5e03\u5f0f\u6578\u64da\u7ba1\u7406<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u5206\u5e03\u5f0f\u6578\u64da\u7ba1\u7406\u6210\u70ba\u4e86\u8a31\u591a\u4f01\u696d\u7684\u6838\u5fc3\u9700\u6c42\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u96c6\u7fa4\u529f\u80fd\uff0c\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u5927\u91cf\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u96c6\u7fa4\u7684\u69fd\u4f4d\u904b\u7b97\u5982\u4f55\u5be6\u73fe\u5206\u5e03\u5f0f\u6578\u64da\u7ba1\u7406\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u6280\u8853\u7d30\u7bc0\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"redis-%e9%9b%86%e7%be%a4%e6%a6%82%e8%bf%b0-JTAUCzGgzE\">Redis \u96c6\u7fa4\u6982\u8ff0<\/h2>\n<p>Redis \u96c6\u7fa4\u662f\u4e00\u7a2e\u5206\u5e03\u5f0f\u67b6\u69cb\uff0c\u5141\u8a31\u7528\u6236\u5728\u591a\u500b Redis \u7bc0\u9ede\u4e4b\u9593\u5206\u914d\u6578\u64da\u3002\u9019\u7a2e\u67b6\u69cb\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u53ef\u7528\u6027\uff0c\u9084\u589e\u5f37\u4e86\u7cfb\u7d71\u7684\u64f4\u5c55\u6027\u3002Redis \u96c6\u7fa4\u7684\u6838\u5fc3\u6982\u5ff5\u662f\u69fd\u4f4d\uff08slot\uff09\uff0c\u5b83\u5c07\u6578\u64da\u5206\u6563\u5230\u4e0d\u540c\u7684\u7bc0\u9ede\u4e0a\uff0c\u5f9e\u800c\u5be6\u73fe\u8ca0\u8f09\u5747\u8861\u3002<\/p>\n<h2 id=\"%e6%a7%bd%e4%bd%8d%e7%9a%84%e9%81%8b%e7%ae%97%e5%8e%9f%e7%90%86-JTAUCzGgzE\">\u69fd\u4f4d\u7684\u904b\u7b97\u539f\u7406<\/h2>\n<p>Redis \u96c6\u7fa4\u5c07\u6578\u64da\u5206\u70ba 16384 \u500b\u69fd\u4f4d\u3002\u6bcf\u500b\u9375\uff08key\uff09\u5728\u5b58\u5132\u6642\uff0c\u6703\u6839\u64da\u5176\u54c8\u5e0c\u503c\u8a08\u7b97\u51fa\u4e00\u500b\u69fd\u4f4d\u3002\u5177\u9ad4\u7684\u8a08\u7b97\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>slot = hash(key) % 16384<\/code><\/pre>\n<p>\u9019\u88e1\u7684 hash \u51fd\u6578\u53ef\u4ee5\u662f\u4efb\u4f55\u4e00\u7a2e\u54c8\u5e0c\u7b97\u6cd5\uff0cRedis \u9ed8\u8a8d\u4f7f\u7528\u7684\u662f CRC16 \u7b97\u6cd5\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97\u6bcf\u500b\u9375\u90fd\u80fd\u5920\u88ab\u5747\u52fb\u5730\u5206\u914d\u5230\u4e0d\u540c\u7684\u69fd\u4f4d\u4e2d\uff0c\u5f9e\u800c\u5be6\u73fe\u6578\u64da\u7684\u5206\u6563\u5b58\u5132\u3002<\/p>\n<h3 id=\"%e6%a7%bd%e4%bd%8d%e8%88%87%e7%af%80%e9%bb%9e%e7%9a%84%e6%98%a0%e5%b0%84-JTAUCzGgzE\">\u69fd\u4f4d\u8207\u7bc0\u9ede\u7684\u6620\u5c04<\/h3>\n<p>\u5728 Redis \u96c6\u7fa4\u4e2d\uff0c\u6bcf\u500b\u7bc0\u9ede\u8ca0\u8cac\u4e00\u90e8\u5206\u69fd\u4f4d\u3002\u7576\u4e00\u500b\u7bc0\u9ede\u88ab\u6dfb\u52a0\u5230\u96c6\u7fa4\u4e2d\u6642\uff0c\u7cfb\u7d71\u6703\u81ea\u52d5\u91cd\u65b0\u5206\u914d\u69fd\u4f4d\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5747\u52fb\u5206\u4f48\u3002\u9019\u4e00\u904e\u7a0b\u7a31\u70ba\u69fd\u4f4d\u7684\u91cd\u65b0\u5206\u914d\uff08slot rebalancing\uff09\u3002<\/p>\n<h4 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%a6%82%e4%bd%95%e8%a8%88%e7%ae%97%e6%a7%bd%e4%bd%8d-JTAUCzGgzE\">\u793a\u4f8b\uff1a\u5982\u4f55\u8a08\u7b97\u69fd\u4f4d<\/h4>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u9375\u70ba &#8220;user:1001&#8221; \u7684\u6578\u64da\uff0c\u8a08\u7b97\u5176\u69fd\u4f4d\u7684\u904e\u7a0b\u5982\u4e0b\uff1a<\/p>\n<pre><code>slot = CRC16(\"user:1001\") % 16384<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6211\u5011\u5c31\u80fd\u5920\u78ba\u5b9a\u8a72\u9375\u61c9\u8a72\u5b58\u5132\u5728\u54ea\u500b\u7bc0\u9ede\u4e0a\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u7c21\u55ae\u9ad8\u6548\uff0c\u9084\u80fd\u5920\u5728\u7bc0\u9ede\u6578\u91cf\u8b8a\u5316\u6642\uff0c\u6700\u5c0f\u5316\u6578\u64da\u7684\u9077\u79fb\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e7%9a%84%e8%ae%80%e5%8f%96%e8%88%87%e5%af%ab%e5%85%a5-JTAUCzGgzE\">\u6578\u64da\u7684\u8b80\u53d6\u8207\u5beb\u5165<\/h2>\n<p>\u5728 Redis \u96c6\u7fa4\u4e2d\uff0c\u6578\u64da\u7684\u8b80\u53d6\u548c\u5beb\u5165\u64cd\u4f5c\u90fd\u662f\u57fa\u65bc\u69fd\u4f4d\u7684\u3002\u7576\u7528\u6236\u767c\u9001\u4e00\u500b\u547d\u4ee4\u6642\uff0cRedis \u6703\u9996\u5148\u8a08\u7b97\u51fa\u8a72\u547d\u4ee4\u6240\u6d89\u53ca\u7684\u9375\u7684\u69fd\u4f4d\uff0c\u7136\u5f8c\u5c07\u8acb\u6c42\u8def\u7531\u5230\u76f8\u61c9\u7684\u7bc0\u9ede\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>GET user:1001<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cRedis \u6703\u8a08\u7b97 &#8220;user:1001&#8221; \u7684\u69fd\u4f4d\uff0c\u7136\u5f8c\u5c07\u8acb\u6c42\u767c\u9001\u5230\u8ca0\u8cac\u8a72\u69fd\u4f4d\u7684\u7bc0\u9ede\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u5927\u5927\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u8a2a\u554f\u6548\u7387\u3002<\/p>\n<h2 id=\"%e6%95%85%e9%9a%9c%e6%81%a2%e5%be%a9%e8%88%87%e6%95%b8%e6%93%9a%e4%b8%80%e8%87%b4%e6%80%a7-JTAUCzGgzE\">\u6545\u969c\u6062\u5fa9\u8207\u6578\u64da\u4e00\u81f4\u6027<\/h2>\n<p>Redis \u96c6\u7fa4\u9084\u63d0\u4f9b\u4e86\u6545\u969c\u6062\u5fa9\u7684\u6a5f\u5236\u3002\u7576\u67d0\u500b\u7bc0\u9ede\u5931\u6548\u6642\uff0c\u96c6\u7fa4\u6703\u81ea\u52d5\u5c07\u8a72\u7bc0\u9ede\u7684\u69fd\u4f4d\u8f49\u79fb\u5230\u5176\u4ed6\u5065\u5eb7\u7684\u7bc0\u9ede\u4e0a\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u53ef\u7528\u6027\u3002\u6b64\u5916\uff0cRedis \u4f7f\u7528\u4e3b\u5f9e\u8907\u88fd\u7684\u65b9\u5f0f\u4f86\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u4e3b\u7bc0\u9ede\u8ca0\u8cac\u5beb\u5165\u64cd\u4f5c\uff0c\u800c\u5f9e\u7bc0\u9ede\u5247\u7528\u65bc\u8b80\u53d6\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-JTAUCzGgzE\">\u7e3d\u7d50<\/h2>\n<p>Redis \u96c6\u7fa4\u7684\u69fd\u4f4d\u904b\u7b97\u662f\u5be6\u73fe\u5206\u5e03\u5f0f\u6578\u64da\u7ba1\u7406\u7684\u95dc\u9375\u6280\u8853\u3002\u901a\u904e\u5c07\u6578\u64da\u5747\u52fb\u5206\u914d\u5230\u4e0d\u540c\u7684\u7bc0\u9ede\uff0cRedis \u4e0d\u50c5\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u589e\u5f37\u4e86\u6578\u64da\u7684\u53ef\u7528\u6027\u548c\u4e00\u81f4\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0cRedis \u96c6\u7fa4\u7121\u7591\u662f\u4e00\u500b\u7406\u60f3\u7684\u9078\u64c7\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72 Redis \u96c6\u7fa4\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u96c6\u7fa4\u69fd\u4f4d\u904b\u7b97\u5982\u4f55\u5be6\u73fe\u9ad8\u6548\u7684\u5206\u5e03\u5f0f\u6578\u64da\u7ba1\u7406\uff0c\u63d0\u5347\u6578\u64da\u5b58\u53d6\u901f\u5ea6\u8207\u7cfb\u7d71\u7a69\u5b9a\u6027\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-121876","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/121876","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=121876"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/121876\/revisions"}],"predecessor-version":[{"id":121877,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/121876\/revisions\/121877"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=121876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=121876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=121876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}