{"id":30802,"date":"2026-05-20T10:00:00","date_gmt":"2026-05-20T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=30802"},"modified":"2026-05-17T07:10:12","modified_gmt":"2026-05-16T23:10:12","slug":"cache-stampede-practical","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/wordpress\/cache-stampede-practical\/","title":{"rendered":"\u591a\u7ea7\u7f13\u5b58\u4e0e Cache Stampede \u5e94\u5bf9\u5b9e\u6218"},"content":{"rendered":"<p><img decoding=\"async\" alt=\"\u591a\u7ea7\u7f13\u5b58\u4e0e Cache Stampede \u5e94\u5bf9\u5b9e\u6218 \u5c01\u9762\u914d\u56fe\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/05\/cache-stampede-practical-cover.webp\" \/><\/p>\n<p>\u672c\u6307\u5357\u6559\u4f60\u5982\u4f55\u89e3\u51b3\u591a\u7ea7\u7f13\u5b58\u4e2d\u7684 Cache Stampede\uff08\u7f13\u5b58\u8e29\u8e0f\uff09\u95ee\u9898\uff0c\u4ece\u6d4f\u89c8\u5668\u3001CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u3001\u5e94\u7528\u672c\u5730\u7f13\u5b58\u5230 Redis \u5171\u4eab\u7f13\u5b58\u9010\u5c42\u68b3\u7406\u3002\u5f88\u591a\u56e2\u961f\u7b2c\u4e00\u6b21\u9047\u5230\u7f13\u5b58\u51fb\u7a7f\u90fd\u662f\u5728\u5927\u4fc3\u524d\u7684\u538b\u6d4b\u91cc\uff1a\u6bcf\u79d2\u8bf7\u6c42\u4e00\u51b2\u5230\u5cf0\u503c\uff0cRedis \u7684\u8d1f\u8f7d\u8fd8\u5f88\u95f2\uff0c\u540e\u7aef\u6570\u636e\u5e93\u5374\u88ab\u6253\u7206\u4e86\u3002\u539f\u56e0\u4e0d\u590d\u6742\uff0c\u70ed\u70b9\u952e\u540c\u65f6\u8fc7\u671f\uff0c\u51e0\u5343\u4e2a\u8bf7\u6c42\u5728\u540c\u4e00\u77ac\u95f4\u56de\u6e90\u67e5\u8be2\uff0c\u628a\u539f\u672c\u5e94\u8be5\u88ab\u7f13\u5b58\u6321\u4e0b\u7684\u67e5\u8be2\u5168\u90e8\u538b\u5230\u6570\u636e\u5e93\u4e0a\u3002\u8fd9\u79cd\u73b0\u8c61\u5728\u82f1\u6587\u793e\u533a\u91cc\u88ab\u53eb\u505a Cache Stampede\uff0c\u4e2d\u6587\u4e00\u822c\u7ffb\u8bd1\u6210\u7f13\u5b58\u8e29\u8e0f\u6216\u7f13\u5b58\u96ea\u5d29\u3002\u672c\u6307\u5357\u5c06\u5e26\u4f60\u4ece\u6d4f\u89c8\u5668\u3001\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\u3001\u5e94\u7528\u5c42\u672c\u5730\u7f13\u5b58\u4e00\u76f4\u68b3\u7406\u5230 Redis \u5171\u4eab\u7f13\u5b58\uff0c\u89e3\u51b3\u591a\u7ea7\u7f13\u5b58\u7684\u534f\u540c\u4e0e\u8e29\u8e0f\u5e94\u5bf9\uff0c\u5e2e\u52a9\u4f60\u5728\u4e0d\u589e\u52a0\u673a\u5668\u7684\u524d\u63d0\u4e0b\u625b\u4f4f\u51e0\u5341\u500d\u7684\u77ac\u65f6\u6d41\u91cf\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u9700\u8981\u591a\u7ea7\u7f13\u5b58<\/h2>\n<p>\u628a\u7f13\u5b58\u53ea\u653e\u5728\u4e00\u5c42\uff0c\u5f80\u5f80\u4e0d\u662f\u8bbe\u8ba1\u9009\u62e9\uff0c\u800c\u662f\u6ca1\u60f3\u6e05\u695a\u67b6\u6784\u3002\u4e00\u4e2a\u5178\u578b\u7535\u5546\u8be6\u60c5\u9875\u7684\u8bf7\u6c42\u8def\u5f84\uff0c\u81f3\u5c11\u8981\u7ecf\u8fc7\u56db\u5c42\u53ef\u4ee5\u7f13\u5b58\u7684\u4f4d\u7f6e\uff1a<\/p>\n<ul>\n<li>\u6d4f\u89c8\u5668\uff1aHTTP \u7f13\u5b58\u4e0e Service Worker\uff0c\u79bb\u7528\u6237\u6700\u8fd1\uff0c\u547d\u4e2d\u540e\u96f6\u7f51\u7edc\u5f00\u9500<\/li>\n<li>\u8fb9\u7f18\u8282\u70b9\uff1aCDN \u7f13\u5b58\u9759\u6001\u8d44\u6e90\u4e0e\u53ef\u7f13\u5b58\u7684 HTML \u7247\u6bb5\uff0c\u8986\u76d6\u5168\u56fd\u751a\u81f3\u5168\u7403<\/li>\n<li>\u5e94\u7528\u8fdb\u7a0b\u5185\uff1a\u672c\u5730\u7684 LRU \u6216 Caffeine \u8fd9\u7c7b\u5185\u5b58\u7ed3\u6784\uff0c\u7eb3\u79d2\u7ea7\u8bbf\u95ee<\/li>\n<li>\u8fdc\u7aef\u5171\u4eab\u7f13\u5b58\uff1aRedis \u96c6\u7fa4\uff0c\u8de8\u5b9e\u4f8b\u4e00\u81f4\uff0c\u4f5c\u4e3a\u6700\u540e\u4e00\u9053\u9632\u7ebf\u6321\u4f4f\u6570\u636e\u5e93<\/li>\n<\/ul>\n<p>\u6bcf\u591a\u4e00\u5c42\u7f13\u5b58\uff0c\u56de\u6e90\u6bd4\u4f8b\u5c31\u80fd\u518d\u964d\u4e00\u4e2a\u6570\u91cf\u7ea7\u3002\u95ee\u9898\u5728\u4e8e\u5c42\u4e0e\u5c42\u4e4b\u95f4\u7684\u5931\u6548\u8981\u4e92\u76f8\u534f\u8c03\uff0c\u5426\u5219\u5c31\u4f1a\u51fa\u73b0\u4e0a\u5c42\u8fd8\u6ca1\u8fc7\u671f\u3001\u4e0b\u5c42\u5df2\u7ecf\u7a7f\u900f\u7684\u8be1\u5f02\u60c5\u51b5\u3002\u591a\u7ea7\u7f13\u5b58\u8bbe\u8ba1\u7684\u6838\u5fc3\u4e0d\u662f\u628a\u7f13\u5b58\u5806\u5f97\u66f4\u591a\uff0c\u800c\u662f\u628a\u5931\u6548\u8def\u5f84\u7406\u6e05\u695a\u3002<\/p>\n<h2>\u7f13\u5b58\u8e29\u8e0f\u662f\u600e\u4e48\u53d1\u751f\u7684<\/h2>\n<p>\u6700\u6734\u7d20\u7684\u590d\u73b0\u65b9\u5f0f\u662f\u5f00\u4e00\u6bb5\u591a\u7ebf\u7a0b\u811a\u672c\uff0c\u6545\u610f\u5236\u9020\u70ed\u70b9\u952e\u8fc7\u671f\u7684\u77ac\u95f4\u3002\u5047\u8bbe\u6709\u4e24\u767e\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u4e00\u4e2a\u521a\u521a\u8fc7\u671f\u7684\u952e\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u4f1a\u53d1\u73b0\u7f13\u5b58\u91cc\u6ca1\u6709\u503c\uff0c\u4e8e\u662f\u5404\u81ea\u53bb\u67e5\u6570\u636e\u5e93\u3002\u751f\u4ea7\u73af\u5883\u91cc\u8fd9\u4e24\u767e\u5c31\u662f\u4e24\u4e07\uff0c\u6570\u636e\u5e93\u77ac\u95f4\u88ab\u6253\u6b7b\u3002<\/p>\n<p>\u95ee\u9898\u7684\u6839\u6e90\u5728\u4e8e\uff1a\u7f13\u5b58\u672a\u547d\u4e2d\u7684\u5224\u65ad\u548c\u56de\u6e90\u67e5\u8be2\u4e4b\u95f4\u662f\u65e0\u9501\u7684\uff0c\u800c\u8fc7\u671f\u662f\u4e2a\u65f6\u95f4\u70b9\u4e8b\u4ef6\uff0c\u6240\u6709\u8bbf\u95ee\u8005\u90fd\u4f1a\u5728\u540c\u4e00\u6beb\u79d2\u5185\u770b\u5230\u540c\u6837\u7684\u672a\u547d\u4e2d\u72b6\u6001\u3002\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u8981\u4e48\u8ba9\u56de\u6e90\u4e32\u884c\u5316\uff0c\u8981\u4e48\u8ba9\u8fc7\u671f\u53d8\u5f97\u5e73\u6ed1\u3002<\/p>\n<h2>\u4e92\u65a5\u9501\uff1a\u6700\u6734\u7d20\u4e5f\u6700\u6709\u6548<\/h2>\n<p>\u6700\u76f4\u63a5\u7684\u529e\u6cd5\u662f\u8ba9\u56de\u6e90\u4e32\u884c\u5316\u3002Redis \u63d0\u4f9b\u4e86 <code>SET NX EX<\/code> \u539f\u8bed\uff0c\u914d\u5408\u7b80\u5355\u7684\u7b49\u5f85\u91cd\u8bd5\u5c31\u80fd\u89e3\u51b3\uff1a<\/p>\n<pre><code class=\"language-python\">def get_with_lock(key):\n    v = r.get(key)\n    if v is not None:\n        return v\n    if r.set(f&quot;lock:{key}&quot;, &quot;1&quot;, nx=True, ex=5):\n        try:\n            value = query_db(key)\n            r.setex(key, 30, value)\n            return value\n        finally:\n            r.delete(f&quot;lock:{key}&quot;)\n    else:\n        time.sleep(0.05)\n        return get_with_lock(key)\n<\/code><\/pre>\n<p>\u9501\u7684\u751f\u5b58\u65f6\u95f4\u4e00\u5b9a\u8981\u5927\u4e8e\u56de\u6e90\u8017\u65f6\u4f46\u53c8\u4e0d\u80fd\u592a\u957f\uff0c\u4e94\u79d2\u662f\u4e2a\u4e0d\u9519\u7684\u8d77\u70b9\u3002\u6ce8\u610f\u62ff\u4e0d\u5230\u9501\u7684\u8bf7\u6c42\u4e0d\u8981\u6b7b\u7b49\uff0c\u8981\u52a0\u9000\u907f\u6216\u8005\u76f4\u63a5\u8fd4\u56de\u65e7\u503c\u3002\u9501\u952e\u4e0e\u6570\u636e\u952e\u52a1\u5fc5\u5206\u5f00\u547d\u540d\uff0c\u5426\u5219\u6e05\u7406\u6570\u636e\u65f6\u8fde\u9501\u4e00\u8d77\u6e05\uff0c\u4e0b\u4e00\u6ce2\u4f9d\u7136\u4f1a\u8e29\u8e0f\u3002<\/p>\n<h2>\u63d0\u524d\u5237\u65b0\u4e0e\u903b\u8f91\u8fc7\u671f<\/h2>\n<p>\u4e92\u65a5\u9501\u89e3\u51b3\u4e86\u5e76\u53d1\u56de\u6e90\uff0c\u4f46\u9501\u6301\u6709\u671f\u95f4\u5176\u5b83\u8bf7\u6c42\u662f\u5361\u4f4f\u7684\u3002\u66f4\u4f18\u96c5\u7684\u65b9\u6848\u662f\u628a\u8fc7\u671f\u53d8\u6210\u903b\u8f91\u8fc7\u671f\u2014\u2014\u503c\u91cc\u5e26\u4e0a\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\u6233\uff0cRedis \u7684\u771f\u5b9e\u751f\u5b58\u65f6\u95f4\u8bbe\u5f97\u66f4\u957f\u3002\u8bfb\u5230\u503c\u65f6\u5148\u770b\u65f6\u95f4\u6233\uff0c\u8fc7\u671f\u4e86\u5c31\u5f02\u6b65\u5237\u65b0\uff0c\u540c\u6b65\u8fd4\u56de\u65e7\u503c\u7ed9\u7528\u6237\u3002<\/p>\n<p>\u8fd9\u79cd\u5199\u6cd5\u4e0b\u7528\u6237\u59cb\u7ec8\u80fd\u62ff\u5230\u54cd\u5e94\uff0c\u6700\u591a\u770b\u5230\u4e00\u4e24\u79d2\u7684\u65e7\u6570\u636e\u3002\u5bf9\u8be6\u60c5\u9875\u3001\u63a8\u8350\u5217\u8868\u8fd9\u7c7b\u5bb9\u5fcd\u5ea6\u9ad8\u7684\u573a\u666f\u975e\u5e38\u5408\u9002\u3002\u8981\u6ce8\u610f\u5f02\u6b65\u5237\u65b0\u9700\u8981\u53bb\u91cd\uff0c\u5426\u5219\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u89e6\u53d1\u5237\u65b0\uff0c\u7b49\u4e8e\u6ca1\u52a0\u9501\u3002\u4e00\u822c\u505a\u6cd5\u662f\u7ed9\u5237\u65b0\u52a8\u4f5c\u518d\u5957\u4e00\u5c42\u77ed\u65f6\u9501\uff0c\u8c01\u62a2\u5230\u8c01\u53bb\u5237\u65b0\uff0c\u5176\u5b83\u7ebf\u7a0b\u76f4\u63a5\u8fd4\u56de\u65e7\u503c\u3002<\/p>\n<h2>\u591a\u7ea7\u7f13\u5b58\u7684\u5931\u6548\u534f\u8c03<\/h2>\n<p>\u5f15\u5165\u672c\u5730\u7f13\u5b58\u540e\uff0c\u95ee\u9898\u4ece\u8e29\u8e0f\u53d8\u6210\u4e86\u4e00\u81f4\u6027\u3002\u5e38\u89c1\u505a\u6cd5\u662f\u7528 Redis \u7684\u53d1\u5e03\u8ba2\u9605\u6216 Kafka \u5e7f\u64ad\u5931\u6548\u4e8b\u4ef6\u3002\u5199\u5165\u7aef\u66f4\u65b0\u6570\u636e\u5e93\u540e\uff0c\u5148\u5220\u9664 Redis \u7684\u5bf9\u5e94\u952e\uff0c\u518d\u53d1\u5e03\u4e00\u6761\u5931\u6548\u6d88\u606f\u3002\u5404\u5e94\u7528\u5b9e\u4f8b\u8ba2\u9605\u8fd9\u6761\u6d88\u606f\uff0c\u6536\u5230\u540e\u6e05\u6389\u81ea\u5df1\u8fdb\u7a0b\u5185\u7684\u672c\u5730\u7f13\u5b58\u3002\u672c\u5730\u7f13\u5b58\u7684\u751f\u5b58\u65f6\u95f4\u8bbe\u77ed\u4e00\u4e9b\uff0c\u4e09\u5341\u79d2\u5230\u4e00\u5206\u949f\uff0c\u4f5c\u4e3a\u6d88\u606f\u4e22\u5931\u65f6\u7684\u515c\u5e95\u3002<\/p>\n<p>\u5982\u679c\u4f60\u7684\u5e94\u7528\u524d\u9762\u6302\u4e86\u53cd\u5411\u4ee3\u7406\u505a\u4e86\u9875\u9762\u7f13\u5b58\uff0c\u8bb0\u5f97\u4e00\u5e76\u914d\u7f6e\u4e3b\u52a8\u6e05\u7406\u63a5\u53e3\uff0c\u53ef\u4ee5\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/server\/nginx-reverse-proxy-load-balancing\/\">Nginx 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href=\"https:\/\/cn.hostease.com\/blog\/cdn\/cloudflare-cdn-china-acceleration\/\">Cloudflare CDN \u4e2d\u56fd\u52a0\u901f<\/a> \u91cc\u5173\u4e8e\u4e0a\u5c42\u5c4f\u853d\u8282\u70b9\u7684\u90e8\u5206\u3002<\/p>\n<p>\u6e90\u7ad9\u8fd9\u8fb9\uff0c\u7ed9\u53ef\u7f13\u5b58\u5185\u5bb9\u52a0\u4e0a <code>stale-while-revalidate<\/code> \u4e0e <code>stale-if-error<\/code> \u4e24\u4e2a\u54cd\u5e94\u5934\uff0c\u8fb9\u7f18\u8282\u70b9\u5728\u56de\u6e90\u5931\u8d25\u65f6\u4f1a\u7ee7\u7eed\u8fd4\u56de\u65e7\u7248\u672c\uff0c\u907f\u514d\u96ea\u5d29\u6269\u6563\u5230\u7528\u6237\u4fa7\u3002<\/p>\n<h2>WordPress \u8fd9\u7c7b\u573a\u666f\u7684\u5b9e\u9645\u914d\u7f6e<\/h2>\n<p>\u5982\u679c\u4f60\u8dd1\u7684\u662f WordPress 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