{"id":7407,"date":"2026-07-21T22:50:00","date_gmt":"2026-07-21T14:50:00","guid":{"rendered":"https:\/\/i007.cc\/wordpress\/?p=7407"},"modified":"2026-07-21T22:50:00","modified_gmt":"2026-07-21T14:50:00","slug":"%e8%ae%be%e8%ae%a1%e6%96%b0%e9%97%bb-feed-%e6%9c%8b%e5%8f%8b%e5%9c%88%ef%bc%88news-feed-system%ef%bc%89","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/7407","title":{"rendered":"\u8bbe\u8ba1\u65b0\u95fb Feed \/ \u670b\u53cb\u5708\uff08News Feed System\uff09"},"content":{"rendered":"<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u8fd9\u9053\u9898\u7684\u6838\u5fc3\u96be\u70b9\u4e0d\u5728\u5b58\u50a8\uff0c\u800c\u5728<strong>\u5982\u4f55\u9ad8\u6548\u5730\u628a\u5185\u5bb9\u5206\u53d1\u7ed9\u6bcf\u4e2a\u7528\u6237<\/strong>\u3002<\/p>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u7b2c\u4e00\u6b65\uff1a\u660e\u786e\u9700\u6c42\u4e0e\u89c4\u6a21<\/h4>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u529f\u80fd\u9700\u6c42\uff1a<\/strong><\/p>\n<ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\" dir=\"auto\">\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">\u53d1\u5e03\u52a8\u6001\uff08\u6587\u5b57\u3001\u56fe\u7247\u3001\u89c6\u9891\uff09<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">\u67e5\u770b Feed \u6d41\uff08\u5173\u6ce8\u7684\u4eba\u6309\u65f6\u95f4\u5012\u5e8f\uff09<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">\u70b9\u8d5e\u3001\u8bc4\u8bba\u3001\u8f6c\u53d1<\/li>\n<\/ul>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u89c4\u6a21\u4f30\u7b97\uff1a<\/strong><\/p>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\u65e5\u6d3b\u7528\u6237\uff08DAU\uff09\uff1a1\u4ebf\r\n\u5e73\u5747\u5173\u6ce8\u6570\uff1a200\u4eba\r\n\u6bcf\u4eba\u6bcf\u5929\u53d1\u5e16\uff1a0.1\u6761 \u2192 \u5199 QPS \u2248 120\/s\r\n\u6bcf\u4eba\u6bcf\u5929\u5237 Feed\uff1a10\u6b21 \u2192 \u8bfb QPS \u2248 12,000\/s\uff08\u8bfb\u8fdc\u591a\u4e8e\u5199\uff09<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u7b2c\u4e8c\u6b65\uff1a\u6838\u5fc3\u95ee\u9898\u2014\u2014Feed \u5982\u4f55\u751f\u6210\uff1f<\/h4>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u8fd9\u662f\u6574\u9053\u9898\u6700\u5173\u952e\u7684\u8bbe\u8ba1\u51b3\u7b56\uff0c\u6709\u4e09\u79cd\u65b9\u6848\uff1a<\/p>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u65b9\u6848\u4e00\uff1a\u62c9\u6a21\u5f0f\uff08Pull \/ Fan-out on Read\uff09<\/h5>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u7528\u6237\u5237 Feed \u65f6\uff0c<strong>\u5b9e\u65f6<\/strong>\u53bb\u62c9\u53d6\u6240\u6709\u5173\u6ce8\u4eba\u7684\u6700\u65b0\u5e16\u5b50\uff0c\u5f52\u5e76\u6392\u5e8f\u540e\u8fd4\u56de\u3002<\/p>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\u7528\u6237A\u5237Feed\r\n  \u2192 \u67e5\u8be2 A \u5173\u6ce8\u7684 200 \u4eba\r\n  \u2192 \u5206\u522b\u8bfb\u53d6\u6bcf\u4eba\u7684\u6700\u65b0\u5e16\u5b50\r\n  \u2192 \u5f52\u5e76\u6392\u5e8f\uff0c\u53d6 Top 20\r\n  \u2192 \u8fd4\u56de<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u4f18\u70b9\uff1a<\/strong> \u5199\u5165\u6781\u7b80\uff0c\u53d1\u5e16\u53ea\u9700\u5199\u4e00\u6761\u8bb0\u5f55\u3002<br \/>\n<strong>\u7f3a\u70b9\uff1a<\/strong> \u8bfb\u65f6\u5ef6\u9ad8\u2014\u2014\u5173\u6ce8 200 \u4eba\u5c31\u8981\u5e76\u53d1\u67e5 200 \u6b21\uff0c\u5f52\u5e76\u4ee3\u4ef7\u5927\uff1b\u7528\u6237\u5237 Feed \u4f53\u9a8c\u5dee\u3002<\/p>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u65b9\u6848\u4e8c\uff1a\u63a8\u6a21\u5f0f\uff08Push \/ Fan-out on Write\uff09\u2b50<\/h5>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u7528\u6237\u53d1\u5e16\u65f6\uff0c<strong>\u4e3b\u52a8\u63a8\u9001<\/strong>\u5230\u6240\u6709\u7c89\u4e1d\u7684 Feed \u961f\u5217\u91cc\uff0c\u7c89\u4e1d\u5237 Feed \u65f6\u76f4\u63a5\u8bfb\u81ea\u5df1\u7684\u961f\u5217\u3002<\/p>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\u7528\u6237A\u53d1\u4e00\u6761\u5e16\u5b50\r\n  \u2192 \u67e5\u8be2 A \u7684\u6240\u6709\u7c89\u4e1d\u5217\u8868\uff08\u5047\u8bbe1000\u4eba\uff09\r\n  \u2192 \u5f02\u6b65\u5199\u5165 1000 \u4e2a\u7c89\u4e1d\u7684 Feed \u961f\u5217\r\n  \u2192 \u7c89\u4e1d\u5237Feed\u65f6\u76f4\u63a5\u8bfb\u81ea\u5df1\u7684\u961f\u5217\uff0cO(1)<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">Feed\u961f\u5217\uff08Redis Sorted Set\uff09:\r\nKey: feed:{user_id}\r\nMember: post_id\r\nScore: \u53d1\u5e16\u65f6\u95f4\u6233\uff08\u7528\u4e8e\u6392\u5e8f\uff09<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u4f18\u70b9\uff1a<\/strong> \u8bfb\u6781\u5feb\uff0c\u76f4\u63a5\u53d6\u961f\u5217 top N\u3002<br \/>\n<strong>\u7f3a\u70b9\uff1a<\/strong> \u5927 V \u95ee\u9898\u2014\u2014\u5fae\u535a\u660e\u661f\u7c89\u4e1d 5000 \u4e07\uff0c\u53d1\u4e00\u6761\u5e16\u5b50\u8981\u5199 5000 \u4e07\u6b21\uff0c\u5199\u5165\u98ce\u66b4\u3002<\/p>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u65b9\u6848\u4e09\uff1a\u63a8\u62c9\u7ed3\u5408\uff08Hybrid\uff09\u2b50\u2b50 \u5de5\u4e1a\u754c\u4e3b\u6d41<\/h5>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u6309\u7c89\u4e1d\u91cf\u533a\u5206\u7b56\u7565\uff1a<\/p>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\u666e\u901a\u7528\u6237\uff08\u7c89\u4e1d &lt; \u9608\u503c\uff0c\u59821\u4e07\uff09\u2192 \u63a8\u6a21\u5f0f\uff0c\u5199\u65f6 fan-out\r\n\u5927 V \u7528\u6237\uff08\u7c89\u4e1d &gt; \u9608\u503c\uff09       \u2192 \u62c9\u6a21\u5f0f\uff0c\u8bfb\u65f6\u5b9e\u65f6\u62c9\u53d6<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u7528\u6237\u5237 Feed \u65f6\uff1a<\/p>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">1. \u76f4\u63a5\u8bfb\u81ea\u5df1\u7684 Feed \u961f\u5217\uff08\u5305\u542b\u666e\u901a\u597d\u53cb\u7684\u5e16\u5b50\uff09\r\n2. \u518d\u62c9\u53d6\u5173\u6ce8\u7684\u5927V\u7684\u6700\u65b0\u5e16\u5b50\r\n3. \u4e24\u90e8\u5206\u5f52\u5e76\u540e\u8fd4\u56de<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u5927 V \u5e16\u5b50\u6570\u91cf\u5c11\uff08\u5237\u4e00\u6b21\u6700\u591a\u62c9\u51e0\u5341\u4e2a\u5927 V\uff09\uff0c\u5f52\u5e76\u4ee3\u4ef7\u53ef\u63a7\uff1b\u666e\u901a\u4eba\u7528\u63a8\u6a21\u5f0f\u8bfb\u6781\u5feb\u3002\u4e24\u5168\u5176\u7f8e\u3002<\/p>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u7b2c\u4e09\u6b65\uff1a\u6574\u4f53\u67b6\u6784<\/h4>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n\u7528\u6237\u53d1\u5e16             \u2502   Post Service   \u2502\r\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192 \u2502  \u5199\u5e16\u5b50\u5230 PostDB  \u2502\r\n                    \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n                             \u2502 \u53d1 MQ \u6d88\u606f\r\n                    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25bc\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n                    \u2502  Fan-out Worker  \u2502 \uff08\u5f02\u6b65\uff09\r\n                    \u2502  \u6d88\u8d39\u6d88\u606f\uff0c\u63a8\u9001   \u2502\r\n                    \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n                             \u2502\r\n              \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n              \u25bc                             \u25bc\r\n   \u666e\u901a\u7528\u6237\u7c89\u4e1d\u7684 Feed Queue           \u5927V\u4e0d\u63a8\uff0c\u8df3\u8fc7\r\n   Redis Sorted Set (feed:{uid})\r\n\r\n\r\n\u7528\u6237\u5237 Feed\r\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192 Feed Service\r\n                    \u2502\r\n          \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n          \u25bc                    \u25bc\r\n  \u8bfb\u81ea\u5df1\u7684 Feed Queue    \u62c9\u53d6\u5173\u6ce8\u5927V\u7684\u5e16\u5b50\r\n  (Redis, \u6781\u5feb)          (PostDB, \u5c11\u91cf)\r\n          \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n                    \u25bc\r\n                \u5f52\u5e76\u6392\u5e8f\r\n                    \u25bc\r\n               \u8fd4\u56de Top N<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u7b2c\u56db\u6b65\uff1a\u5173\u952e\u7ec6\u8282<\/h4>\n<h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">Feed \u961f\u5217\u7684\u8bbe\u8ba1<\/h5>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u7528 Redis Sorted Set\uff0cscore \u662f\u65f6\u95f4\u6233\uff0c\u5929\u7136\u6709\u5e8f\uff1a<\/p>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">ZADD feed:user_A  1720000001  post_123\r\nZADD feed:user_A  1720000002  post_456\r\n\r\n# \u53d6\u6700\u65b0 20 \u6761\r\nZREVRANGE feed:user_A 0 19 WITHSCORES<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u961f\u5217\u53ea\u5b58 <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">post_id<\/code>\uff0c\u5e16\u5b50\u5185\u5bb9\u53e6\u5b58\u3002\u8bfb Feed \u65f6\uff1a<\/p>\n<ol class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-decimal flex flex-col gap-1 pl-8 mb-3\" dir=\"auto\">\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">\u62ff\u5230 post_id \u5217\u8868<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">\u6279\u91cf <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">MGET<\/code> \u5e16\u5b50\u5185\u5bb9\uff08\u4e5f\u5728 Redis \u7f13\u5b58\uff09<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">\u4e00\u6b21\u8fd4\u56de<\/li>\n<\/ol>\n<h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u5e16\u5b50\u5185\u5bb9\u5b58\u50a8<\/h5>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">PostDB\uff08MySQL\uff09: id, user_id, content, media_urls, created_at\r\nPost Cache\uff08Redis\uff09: key=post:{id}, value=\u5e16\u5b50JSON, TTL=7\u5929\r\n\u5a92\u4f53\u6587\u4ef6: CDN + \u5bf9\u8c61\u5b58\u50a8\uff08S3\/OSS\uff09<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<h5 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u7ffb\u9875\uff08Pagination\uff09<\/h5>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u4e0d\u80fd\u7528 OFFSET<\/strong>\uff0c\u56e0\u4e3a\u65b0\u5e16\u5b50\u4e0d\u65ad\u63d2\u5165\uff0c\u7ffb\u9875\u4f1a\u6f0f\u5185\u5bb9\u6216\u91cd\u590d\u3002<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u7528<strong>\u6e38\u6807\u5206\u9875\uff08Cursor-based\uff09<\/strong>\uff1a<\/p>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\u7b2c\u4e00\u9875: \u8fd4\u56de Top 20\uff0c\u540c\u65f6\u8fd4\u56de\u6700\u540e\u4e00\u6761\u7684 score\uff08\u65f6\u95f4\u6233\uff09\u4f5c\u4e3a cursor\r\n\u4e0b\u4e00\u9875: ZREVRANGEBYSCORE feed:uid (cursor -inf LIMIT 0 20<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u7b2c\u4e94\u6b65\uff1a\u5176\u4ed6\u7ec6\u8282<\/h4>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u5728\u7ebf\u72b6\u6001\u4f18\u5316\uff1a<\/strong> \u63a8\u6a21\u5f0f\u53ef\u4ee5\u8df3\u8fc7\u957f\u671f\u4e0d\u6d3b\u8dc3\u7684\u7528\u6237\uff08\u6bd4\u5982 30 \u5929\u672a\u767b\u5f55\uff09\uff0c\u7b49\u4ed6\u4eec\u4e0a\u7ebf\u65f6\u518d\u7528\u62c9\u6a21\u5f0f\u8865\u5168\uff0c\u8282\u7701\u5927\u91cf\u65e0\u6548\u5199\u5165\u3002<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u70b9\u8d5e\/\u8bc4\u8bba\u8ba1\u6570\uff1a<\/strong> \u4e0d\u80fd\u6bcf\u6b21\u90fd <code class=\"bg-text-200\/5 border border-0.5 border-border-300 text-danger-000 whitespace-pre-wrap rounded-[0.4rem] px-1 py-px text-[0.9rem]\">COUNT(*)<\/code>\uff0c\u7528 Redis \u8ba1\u6570\u5668\uff1a<\/p>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">INCR like_count:{post_id}<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">\u5f02\u6b65\u6279\u91cf\u56de\u5199 MySQL\u3002<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u70ed\u70b9\u5e16\u5b50\u7f13\u5b58\uff1a<\/strong> \u5927 V \u7684\u5e16\u5b50\u88ab\u5927\u91cf\u62c9\u53d6\uff0c\u5355\u72ec\u505a\u70ed\u70b9\u7f13\u5b58\uff0cTTL \u77ed\u4f46\u547d\u4e2d\u7387\u6781\u9ad8\u3002<\/p>\n<hr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\" \/>\n<h4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\" dir=\"auto\">\u9762\u8bd5\u8868\u8fbe\u6846\u67b6<\/h4>\n<div class=\"relative group\/copy bg-bg-000\/50 border-0.5 border-border-400 rounded-lg focus:outline-none focus-visible:ring-2 focus-visible:ring-accent-100\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div class=\"sticky opacity-0 group-hover\/copy:opacity-100 group-focus-within\/copy:opacity-100 top-2 py-2 h-12 w-0 float-right\">\n<div class=\"absolute right-0 h-8 px-2 items-center inline-flex z-10\"><\/div>\n<\/div>\n<div class=\"overflow-x-auto\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">1. \u9700\u6c42 + \u4f30\u7b97\uff083min\uff09   \u2192 \u786e\u8ba4\u8bfb\u591a\u5199\u5c11\uff0c\u89c4\u6a21\u91cf\u7ea7\r\n2. \u6838\u5fc3\u51b3\u7b56\uff088min\uff09      \u2192 \u63a8\/\u62c9\/\u6df7\u5408\uff0c\u8bb2\u6e05\u695a\u6743\u8861\r\n3. \u67b6\u6784\u56fe\uff085min\uff09        \u2192 \u53d1\u5e16\u94fe\u8def + \u8bfbFeed\u94fe\u8def\r\n4. \u5b58\u50a8\u8bbe\u8ba1\uff085min\uff09      \u2192 Redis Sorted Set + PostDB + CDN\r\n5. \u6df1\u6316\uff085min\uff09          \u2192 \u5927V\u95ee\u9898\u3001\u6e38\u6807\u7ffb\u9875\u3001\u8ba1\u6570\u5668<\/pre>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"><strong>\u9762\u8bd5\u5b98\u6700\u60f3\u542c\u7684\u4e24\u53e5\u8bdd\uff1a<\/strong><\/p>\n<blockquote class=\"ml-2 border-l-4 border-[hsl(var(--border-300)\/0.1)] pl-4 text-text-300\" dir=\"auto\">\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">&#8220;\u666e\u901a\u7528\u6237\u7528\u63a8\u6a21\u5f0f\u4fdd\u8bc1\u8bfb\u6027\u80fd\uff0c\u5927 V \u7528\u62c9\u6a21\u5f0f\u907f\u514d\u5199\u98ce\u66b4\uff0c\u9608\u503c\u6839\u636e\u5b9e\u9645\u538b\u6d4b\u8c03\u6574\u3002&#8221;<\/p>\n<\/blockquote>\n<blockquote class=\"ml-2 border-l-4 border-[hsl(var(--border-300)\/0.1)] pl-4 text-text-300\" dir=\"auto\">\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\">&#8220;Feed \u961f\u5217\u53ea\u5b58 post_id\uff0c\u5185\u5bb9\u8d70\u7f13\u5b58\u6279\u91cf\u8bfb\uff0c\u628a\u968f\u673a\u8bfb\u53d8\u6210\u6279\u91cf\u8bfb\uff0c\u5ef6\u8fdf\u4ece\u6beb\u79d2\u964d\u5230\u5fae\u79d2\u3002&#8221;<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u9053\u9898\u7684\u6838\u5fc3\u96be\u70b9\u4e0d\u5728\u5b58\u50a8\uff0c\u800c\u5728\u5982\u4f55\u9ad8\u6548\u5730<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[24],"tags":[],"class_list":["post-7407","post","type-post","status-publish","format-standard","hentry","category-value_docs"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/7407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=7407"}],"version-history":[{"count":1,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/7407\/revisions"}],"predecessor-version":[{"id":7408,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/7407\/revisions\/7408"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=7407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=7407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=7407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}