{"id":33547,"date":"2026-10-12T10:00:00","date_gmt":"2026-10-12T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=33547"},"modified":"2026-10-13T10:58:14","modified_gmt":"2026-10-13T02:58:14","slug":"redis-cache-penetration-avalanche-protection","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/tutorials\/redis-cache-penetration-avalanche-protection\/","title":{"rendered":"Redis \u7f13\u5b58\u7a7f\u900f\u4e0e\u96ea\u5d29\u9632\u62a4\uff1a\u70ed\u70b9\u6570\u636e\u7684\u7f13\u5b58\u7b56\u7565\u8bbe\u8ba1"},"content":{"rendered":"<p>\u4e00\u6b21\u5927\u4fc3\u5f00\u59cb 10 \u5206\u949f\u540e\u6570\u636e\u5e93 CPU \u88ab\u6253\u6ee1\uff0c\u4e1a\u52a1\u5374\u51e0\u4e4e\u6ca1\u6709\u771f\u5b9e\u6d41\u91cf\u589e\u957f\u2014\u2014\u8fd9\u662f\u5f88\u591a\u56e2\u961f\u7b2c\u4e00\u6b21\u771f\u6b63\u89c1\u8bc6\u7f13\u5b58\u5931\u6548\u7684\u7834\u574f\u529b\uff1a\u672c\u6765\u7531 Redis\uff08\u4e00\u79cd\u57fa\u4e8e\u5185\u5b58\u7684\u952e\u503c\u7f13\u5b58\u6570\u636e\u5e93\uff09\u625b\u4f4f\u7684\u67e5\u8be2\uff0c\u56e0\u4e3a\u4e00\u6279\u7f13\u5b58\u952e\u540c\u65f6\u5931\u6548\u6216\u88ab\u6076\u610f\u8bf7\u6c42\u7ed5\u8fc7\uff0c\u77ac\u95f4\u5168\u90e8\u538b\u56de\u6570\u636e\u5e93\u3002\u8981\u89e3\u51b3&#8221;\u5982\u4f55\u8ba9\u7f13\u5b58\u5c42\u5728\u5f02\u5e38\u6d41\u91cf\u4e0b\u4f9d\u7136\u7a33\u5f97\u4f4f&#8221;\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u5148\u5206\u6e05\u7a7f\u900f\u548c\u96ea\u5d29\u8fd9\u4e24\u79cd\u6545\u969c\u5f62\u6001\u3002<\/p>\n<p>\u672c\u6587\u4f1a\u5e26\u4f60\u9010\u4e00\u5904\u7406\u4e09\u7c7b\u95ee\u9898\uff1a\u5148\u8bb2\u6e05\u7f13\u5b58\u7a7f\u900f\uff08\u67e5\u8be2\u6839\u672c\u4e0d\u5b58\u5728\u7684\u6570\u636e\uff0c\u8bf7\u6c42\u7ed5\u8fc7\u7f13\u5b58\u76f4\u6253\u6570\u636e\u5e93\uff09\u7684\u8bc6\u522b\u4e0e\u62e6\u622a\uff0c\u518d\u8bb2\u7f13\u5b58\u96ea\u5d29\uff08\u5927\u91cf\u7f13\u5b58\u952e\u540c\u4e00\u65f6\u95f4\u5931\u6548\uff0c\u8bf7\u6c42\u96c6\u4e2d\u56de\u6e90\uff09\u7684\u9884\u9632\u8bbe\u8ba1\uff0c\u6700\u540e\u7ed9\u51fa\u4e00\u5957\u70ed\u70b9\u6570\u636e\u7684\u7f13\u5b58\u7b56\u7565\u7ec4\u5408\uff0c\u5305\u542b\u53ef\u4ee5\u76f4\u63a5\u843d\u5730\u7684\u914d\u7f6e\u548c\u4ee3\u7801\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/redis-cache-protection-cover.webp\" alt=\"\u7f13\u5b58\u5c42\u662f\u6570\u636e\u5e93\u524d\u7684\u8fc7\u6ee4\u5899\uff0c\u8bbe\u8ba1\u4e0d\u5f53\u53cd\u800c\u4f1a\u628a\u538b\u529b\u653e\u5927\" loading=\"lazy\" \/><\/p>\n<h2>\u5206\u6e05\u4e24\u79cd\u6545\u969c\uff1a\u7a7f\u900f\u548c\u96ea\u5d29\u4e0d\u662f\u4e00\u56de\u4e8b<\/h2>\n<p>\u8fd9\u4e24\u79cd\u6545\u969c\u7ecf\u5e38\u88ab\u6df7\u4e3a\u4e00\u8c08\uff0c\u4f46\u6210\u56e0\u548c\u9632\u62a4\u624b\u6bb5\u5b8c\u5168\u4e0d\u540c\u3002\u7f13\u5b58\u7a7f\u900f\u7684\u5178\u578b\u573a\u666f\u662f\uff1a\u653b\u51fb\u8005\u4f2a\u9020\u5927\u91cf\u6570\u636e\u5e93\u91cc\u6839\u672c\u4e0d\u5b58\u5728\u7684 ID \u53cd\u590d\u8bf7\u6c42\uff0c\u6bd4\u5982\u7528\u968f\u673a\u6570\u53bb\u67e5 <code>user?id=999999999<\/code>\u3002\u8fd9\u4e9b\u952e\u5728\u7f13\u5b58\u91cc\u6c38\u8fdc\u4e0d\u4f1a\u6709\u503c\uff0c\u4e8e\u662f\u6bcf\u4e00\u6b21\u8bf7\u6c42\u90fd\u7a7f\u900f\u7f13\u5b58\u5c42\u76f4\u63a5\u7838\u5230\u6570\u636e\u5e93\u2014\u2014\u5355\u4e2a\u8bf7\u6c42\u65e0\u5bb3\uff0c\u653e\u5927\u5230\u6bcf\u79d2\u4e0a\u4e07\u6b21\u5c31\u662f\u707e\u96be\u3002<\/p>\n<p>\u7f13\u5b58\u96ea\u5d29\u5219\u76f8\u53cd\uff1a\u95ee\u9898\u4e0d\u51fa\u5728&#8221;\u4e0d\u5b58\u5728\u7684\u952e&#8221;\uff0c\u800c\u51fa\u5728&#8221;\u5b58\u5728\u7684\u952e\u540c\u65f6\u6d88\u5931&#8221;\u3002\u6700\u5e38\u89c1\u7684\u8bf1\u56e0\u662f\u7ed9\u6574\u6279\u7f13\u5b58\u952e\u8bbe\u7f6e\u4e86\u5b8c\u5168\u76f8\u540c\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u6bd4\u5982\u51cc\u6668\u7edf\u4e00\u5199\u5165\u4e86 8 \u5c0f\u65f6 TTL\uff08Time To Live\uff0c\u7f13\u5b58\u952e\u7684\u5b58\u6d3b\u65f6\u957f\uff09\u7684\u7f13\u5b58\uff0c8 \u5c0f\u65f6\u540e\u8fd9\u6279\u952e\u5728\u540c\u4e00\u79d2\u5185\u96c6\u4f53\u8fc7\u671f\uff0c\u6240\u6709\u6d41\u91cf\u540c\u65f6\u6d8c\u5411\u6570\u636e\u5e93\u3002\u7f13\u5b58\u5b9e\u4f8b\u5b95\u673a\u4e5f\u4f1a\u89e6\u53d1\u540c\u7c7b\u6548\u5e94\u3002<\/p>\n<p>\u4e24\u79cd\u5f62\u6001\u6709\u4e00\u4e2a\u76f4\u89c2\u7684\u5bf9\u6bd4\uff1a\u7a7f\u900f\u662f&#8221;\u5c11\u6570\u6076\u610f\u6d41\u91cf\u6301\u7eed\u76f4\u7a7f&#8221;\uff0c\u96ea\u5d29\u662f&#8221;\u6b63\u5e38\u6d41\u91cf\u5728\u67d0\u4e00\u4e2a\u65f6\u95f4\u70b9\u96c6\u4e2d\u56de\u6e90&#8221;\u3002\u4e0b\u9762\u7684\u793a\u610f\u56fe\u53ef\u4ee5\u5e2e\u4f60\u5feb\u901f\u5efa\u7acb\u76f4\u89c9\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/redis-cache-penetration-vs-avalanche.webp\" alt=\"\u7f13\u5b58\u7a7f\u900f\u5355\u4e2a\u8bf7\u6c42\u76f4\u7a7f\u4e0e\u7f13\u5b58\u96ea\u5d29\u6279\u91cf\u5931\u6548\u7684\u5bf9\u6bd4\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<p>\u533a\u5206\u6e05\u695a\u8fd9\u4e00\u70b9\u5f88\u91cd\u8981\uff0c\u56e0\u4e3a\u9632\u62a4\u7b56\u7565\u5b8c\u5168\u662f\u4e24\u5957\u601d\u8def\uff1a\u7a7f\u900f\u8981\u5728&#8221;\u8bf7\u6c42\u8fdb\u5165\u6570\u636e\u5e93\u4e4b\u524d&#8221;\u505a\u62e6\u622a\uff0c\u96ea\u5d29\u8981\u5728&#8221;\u7f13\u5b58\u952e\u7684\u5931\u6548\u65f6\u95f4\u5206\u5e03&#8221;\u4e0a\u505a\u6587\u7ae0\u3002<\/p>\n<h2>\u7a7f\u900f\u9632\u62a4\uff1a\u6821\u9a8c\u3001\u7a7a\u503c\u7f13\u5b58\u3001\u5e03\u9686\u8fc7\u6ee4\u5668\u4e09\u5c42\u7ec4\u5408<\/h2>\n<p>\u8bc6\u522b\u7a7f\u900f\u5e76\u4e0d\u96be\uff1a\u89c2\u5bdf\u6570\u636e\u5e93\u7684\u6162\u67e5\u8be2\u65e5\u5fd7\uff0c\u5982\u679c\u5927\u91cf\u67e5\u8be2\u7684 ID \u5728\u4e1a\u52a1\u8868\u91cc\u6839\u672c\u4e0d\u5b58\u5728\uff0c\u6216\u8005\u540c\u4e00\u7c7b\u65e0\u6548\u53c2\u6570\u6bcf\u79d2\u51fa\u73b0\u51e0\u5341\u6b21\uff0c\u57fa\u672c\u53ef\u4ee5\u65ad\u5b9a\u6b63\u5728\u88ab\u7a7f\u900f\u3002\u9632\u62a4\u7684\u6838\u5fc3\u601d\u8def\u662f\u8ba9\u65e0\u6548\u8bf7\u6c42\u5728\u5230\u8fbe\u6570\u636e\u5e93\u4e4b\u524d\u5c31\u88ab\u62e6\u4e0b\u6765\uff0c\u5b9e\u9645\u843d\u5730\u901a\u5e38\u4e09\u5c42\u914d\u5408\u3002<\/p>\n<p>\u7b2c\u4e00\u5c42\u662f\u53c2\u6570\u6821\u9a8c\uff0c\u6210\u672c\u6700\u4f4e\u3002ID \u7c7b\u53c2\u6570\u5148\u9a8c\u8bc1\u683c\u5f0f\uff0c\u6bd4\u5982\u7528\u6237 ID \u5fc5\u987b\u662f\u6b63\u6574\u6570\u4e14\u4e0d\u8d85\u8fc7\u5df2\u6709\u6700\u5927\u503c\uff0c\u683c\u5f0f\u90fd\u4e0d\u5bf9\u7684\u8bf7\u6c42\u76f4\u63a5\u8fd4\u56de\uff0c\u8fde\u7f13\u5b58\u90fd\u4e0d\u7528\u67e5\u3002\u8fd9\u4e00\u5c42\u80fd\u6321\u6389\u5927\u90e8\u5206\u7c97\u7cd9\u7684\u653b\u51fb\u811a\u672c\uff0c\u4ee3\u4ef7\u53ea\u662f\u51e0\u884c\u4ee3\u7801\u3002<\/p>\n<p>\u7b2c\u4e8c\u5c42\u662f\u7a7a\u503c\u7f13\u5b58\uff0c\u89e3\u51b3&#8221;\u683c\u5f0f\u5408\u6cd5\u4f46\u6570\u636e\u4e0d\u5b58\u5728&#8221;\u7684\u8bf7\u6c42\u3002\u67e5\u8be2\u6570\u636e\u5e93\u786e\u8ba4\u4e0d\u5b58\u5728\u540e\uff0c\u628a\u7a7a\u7ed3\u679c\u4e5f\u5199\u5165\u7f13\u5b58\uff0c\u5e76\u7ed9\u4e00\u4e2a\u8f83\u77ed\u7684 TTL\uff0c\u8fd9\u6837\u540c\u4e00\u4e2a\u65e0\u6548\u952e\u7684\u540e\u7eed\u8bf7\u6c42\u4f1a\u88ab\u7f13\u5b58\u76f4\u63a5\u6d88\u5316\uff1a<\/p>\n<pre><code class=\"language-python\">def get_user(user_id):\n    key = f&quot;user:{user_id}&quot;\n    val = redis.get(key)\n    if val is not None:\n        return None if val == &quot;&quot; else deserialize(val)  # \u7a7a\u5b57\u7b26\u4e32\u4ee3\u8868\u5df2\u786e\u8ba4\u4e0d\u5b58\u5728\n    user = db.query_user(user_id)\n    if user is None:\n        redis.set(key, &quot;&quot;, ex=60)   # \u7a7a\u503c\u7f13\u5b58 60 \u79d2\uff0c\u9632\u6b62\u53cd\u590d\u56de\u6e90\n        return None\n    redis.set(key, serialize(user), ex=3600)\n    return user\n<\/code><\/pre>\n<p>\u7b2c\u4e09\u5c42\u662f\u5e03\u9686\u8fc7\u6ee4\u5668\uff08\u4e00\u79cd\u7528\u6781\u5c0f\u5185\u5b58\u5224\u65ad&#8221;\u952e\u662f\u5426\u53ef\u80fd\u5b58\u5728&#8221;\u7684\u6982\u7387\u7ed3\u6784\uff09\uff0c\u9002\u5408\u952e\u7a7a\u95f4\u5de8\u5927\u4e14\u65e0\u6548\u8bf7\u6c42\u5360\u6bd4\u9ad8\u7684\u573a\u666f\u3002\u628a\u5168\u90e8\u5408\u6cd5 ID \u9884\u5148\u5199\u5165\u8fc7\u6ee4\u5668\uff0c\u8bf7\u6c42\u5148\u95ee\u8fc7\u6ee4\u5668\uff1a\u5982\u679c\u56de\u7b54&#8221;\u4e0d\u5b58\u5728&#8221;\uff0c\u76f4\u63a5\u62d2\u7edd\uff1b\u5982\u679c\u56de\u7b54&#8221;\u53ef\u80fd\u5b58\u5728&#8221;\uff0c\u518d\u8d70\u6b63\u5e38\u67e5\u8be2\u3002\u5e03\u9686\u8fc7\u6ee4\u5668\u6709\u6781\u4f4e\u7684\u8bef\u5224\u7387\uff0c\u4f46&#8221;\u4e0d\u5b58\u5728&#8221;\u7684\u5224\u65ad\u662f\u7edd\u5bf9\u53ef\u9760\u7684\uff0c\u6240\u4ee5\u62e6\u622a\u65e0\u6548\u6d41\u91cf\u7684\u6548\u679c\u662f\u786e\u5b9a\u7684\u3002\u4e00\u4ebf\u4e2a\u952e\u7684\u8fc7\u6ee4\u5668\u901a\u5e38\u53ea\u9700\u8981\u4e00\u4e24\u767e MB \u5185\u5b58\uff0c\u6210\u672c\u8fdc\u4f4e\u4e8e\u88ab\u6253\u7a7f\u7684\u6570\u636e\u5e93\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/redis-cache-protection-layers.webp\" alt=\"\u6821\u9a8c\u3001\u7a7a\u503c\u7f13\u5b58\u4e0e\u4e92\u65a5\u9501\u5206\u5c42\u62e6\u622a\uff0c\u6570\u636e\u5e93\u53ea\u63a5\u6536\u6709\u6548\u6d41\u91cf\" loading=\"lazy\" \/><\/p>\n<p>\u4e09\u5c42\u4e0d\u5fc5\u540c\u65f6\u4e0a\u9a6c\uff1a\u5c0f\u89c4\u6a21\u7cfb\u7edf\u7528\u6821\u9a8c\u52a0\u7a7a\u503c\u7f13\u5b58\u901a\u5e38\u5c31\u591f\u4e86\uff1b\u53ea\u6709\u5f53\u65e0\u6548\u6d41\u91cf\u89c4\u6a21\u660e\u663e\u3001\u6216\u8005\u952e\u7a7a\u95f4\u5927\u5230\u7a7a\u503c\u7f13\u5b58\u4e5f\u5b58\u4e0d\u8fc7\u6765\u65f6\uff0c\u624d\u503c\u5f97\u5f15\u5165\u5e03\u9686\u8fc7\u6ee4\u5668\u3002<\/p>\n<h2>\u96ea\u5d29\u9632\u62a4\uff1a\u628a\u8fc7\u671f\u65f6\u95f4\u6253\u6563\uff0c\u628a\u56de\u6e90\u5e76\u53d1\u538b\u4f4e<\/h2>\n<p>\u7406\u89e3\u4e86\u96ea\u5d29\u7684\u6210\u56e0\u662f&#8221;\u540c\u65f6\u5931\u6548&#8221;\uff0c\u9632\u62a4\u601d\u8def\u5c31\u6e05\u695a\u4e86\uff1a\u8ba9\u5931\u6548\u65f6\u95f4\u5c3d\u91cf\u5206\u6563\uff0c\u8ba9\u56de\u6e90\u8fc7\u7a0b\u5c3d\u91cf\u6e29\u548c\u3002<\/p>\n<p>\u6700\u6709\u6548\u7684\u4e00\u62db\u662f\u8fc7\u671f\u65f6\u95f4\u52a0\u968f\u673a\u504f\u79fb\u3002\u4e0d\u8981\u7ed9\u540c\u4e00\u6279\u952e\u5199\u6b7b\u76f8\u540c\u7684 TTL\uff0c\u800c\u662f\u5728\u57fa\u7840\u65f6\u957f\u4e0a\u53e0\u52a0\u4e00\u4e2a\u968f\u673a\u91cf\uff0c\u8ba9\u5931\u6548\u70b9\u5728\u65f6\u95f4\u8f74\u4e0a\u644a\u5f00\uff1a<\/p>\n<pre><code class=\"language-python\">import random\n\ndef cache_with_jitter(key, value, base_ttl=3600):\n    ttl = base_ttl + random.randint(0, 600)  # \u5728\u57fa\u7840 1 \u5c0f\u65f6\u4e0a\u968f\u673a\u52a0 0-10 \u5206\u949f\n    redis.set(key, value, ex=ttl)\n<\/code><\/pre>\n<p>\u53ea\u6539\u8fd9\u4e00\u884c\uff0c\u539f\u6765&#8221;\u6574\u70b9\u96c6\u4f53\u8fc7\u671f&#8221;\u7684\u7f13\u5b58\u952e\u5c31\u4f1a\u5206\u5e03\u5728 60-70 \u5206\u949f\u7684\u533a\u95f4\u91cc\u9646\u7eed\u5931\u6548\uff0c\u6570\u636e\u5e93\u627f\u53d7\u7684\u56de\u6e90\u538b\u529b\u4ece\u77ac\u65f6\u5c16\u5cf0\u53d8\u6210\u5e73\u7f13\u7684\u80cc\u666f\u6d41\u91cf\u3002\u6211\u4eec\u5efa\u8bae\u628a\u968f\u673a\u504f\u79fb\u91cf\u63a7\u5236\u5728\u57fa\u7840 TTL \u7684 10% \u5de6\u53f3\uff1a\u592a\u5c0f\u8d77\u4e0d\u5230\u6253\u6563\u4f5c\u7528\uff0c\u592a\u5927\u5219\u53ef\u80fd\u8ba9\u90e8\u5206\u6570\u636e\u9648\u65e7\u65f6\u95f4\u8d85\u51fa\u4e1a\u52a1\u5bb9\u5fcd\u5ea6\u3002<\/p>\n<p>\u7b2c\u4e8c\u62db\u662f\u4e92\u65a5\u9501\uff0c\u9632\u6b62&#8221;\u4e00\u4e2a\u70ed\u70b9\u952e\u5931\u6548\uff0c\u6210\u767e\u4e0a\u5343\u4e2a\u8bf7\u6c42\u540c\u65f6\u56de\u6e90\u91cd\u5efa&#8221;\u3002\u952e\u5931\u6548\u65f6\u53ea\u5141\u8bb8\u4e00\u4e2a\u8bf7\u6c42\u53bb\u67e5\u6570\u636e\u5e93\u5e76\u56de\u5199\u7f13\u5b58\uff0c\u5176\u4f59\u8bf7\u6c42\u77ed\u6682\u7b49\u5f85\u540e\u91cd\u65b0\u8bfb\u7f13\u5b58\uff1a<\/p>\n<pre><code class=\"language-python\">def get_hot(key, rebuild_fn, lock_ttl=10):\n    val = redis.get(key)\n    if val is not None:\n        return deserialize(val)\n    lock = redis.set(f&quot;lock:{key}&quot;, 1, nx=True, ex=lock_ttl)  # \u53ea\u6709\u62ff\u5230\u9501\u7684\u8bf7\u6c42\u56de\u6e90\n    if lock:\n        data = rebuild_fn()\n        redis.set(key, serialize(data), ex=3600 + random.randint(0, 300))\n        redis.delete(f&quot;lock:{key}&quot;)\n        return data\n    time.sleep(0.05)\n    return get_hot(key, rebuild_fn)  # \u6ca1\u62ff\u5230\u9501\u7684\u8bf7\u6c42\u7a0d\u540e\u91cd\u8bd5\u8bfb\u7f13\u5b58\n<\/code><\/pre>\n<p>\u7b2c\u4e09\u62db\u662f\u7f13\u5b58\u9ad8\u53ef\u7528\u4e0e\u964d\u7ea7\u9884\u6848\u3002\u96ea\u5d29\u6700\u574f\u7684\u60c5\u5f62\u662f\u7f13\u5b58\u5b9e\u4f8b\u6574\u4f53\u4e0d\u53ef\u7528\uff0c\u56e0\u6b64\u751f\u4ea7\u73af\u5883\u81f3\u5c11\u8981\u90e8\u7f72\u4e3b\u4ece\u52a0\u81ea\u52a8\u6545\u969c\u8f6c\u79fb\uff1b\u540c\u65f6\u7ed9\u6570\u636e\u5e93\u4fa7\u51c6\u5907\u9650\u6d41\u515c\u5e95\u2014\u2014\u5373\u4fbf\u7f13\u5b58\u5b8c\u5168\u5931\u6548\uff0c\u6570\u636e\u5e93\u4e5f\u53ea\u63a5\u6536\u81ea\u5df1\u625b\u5f97\u4f4f\u7684\u5e76\u53d1\u91cf\uff0c\u5b81\u53ef\u90e8\u5206\u8bf7\u6c42\u6392\u961f\uff0c\u4e5f\u4e0d\u80fd\u8ba9\u6570\u636e\u5e93\u88ab\u538b\u57ae\u540e\u5168\u7ad9\u4e0d\u53ef\u7528\u3002\u9650\u6d41\u4e0e\u544a\u8b66\u7684\u5177\u4f53\u8054\u52a8\u505a\u6cd5\uff0c\u53ef\u4ee5\u53c2\u8003\u8fd9\u7bc7 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/nginx-limit-req-rate-limiting\/\">Nginx \u9650\u6d41\u4e0e CC \u653b\u51fb\u9632\u62a4\u5b9e\u8df5<\/a>\u3002<\/p>\n<h2>\u70ed\u70b9\u6570\u636e\u7684\u7b56\u7565\u7ec4\u5408\u4e0e\u76d1\u63a7\u6307\u6807<\/h2>\n<p>\u524d\u9762\u7684\u624b\u6bb5\u89e3\u51b3\u4e86&#8221;\u4e0d\u88ab\u6253\u7a7f&#8221;\uff0c\u70ed\u70b9\u6570\u636e\u8fd8\u8981\u89e3\u51b3&#8221;\u4e00\u76f4\u6709\u5f97\u7528&#8221;\u3002\u4e00\u4e2a\u7ecf\u8fc7\u591a\u4e2a\u9879\u76ee\u9a8c\u8bc1\u7684\u7ec4\u5408\u7b56\u7565\u662f\u8fd9\u6837\u7684\uff1a\u6838\u5fc3\u70ed\u70b9\u952e\uff08\u9996\u9875\u3001\u7206\u6b3e\u5546\u54c1\u3001\u914d\u7f6e\u9879\uff09\u8bbe\u7f6e\u6c38\u4e0d\u8fc7\u671f\u6216\u8d85\u957f TTL\uff0c\u7531\u540e\u53f0\u4efb\u52a1\u5b9a\u65f6\u4e3b\u52a8\u5237\u65b0\uff0c\u5f7b\u5e95\u56de\u907f&#8221;\u5931\u6548\u77ac\u95f4&#8221;\u8fd9\u4e2a\u98ce\u9669\u70b9\uff1b\u666e\u901a\u6570\u636e\u7528\u968f\u673a\u5316 TTL \u52a0\u4e92\u65a5\u9501\u515c\u5e95\uff1b\u8fb9\u7f18\u9759\u6001\u5185\u5bb9\u5219\u4ea4\u7ed9\u591a\u5c42\u7f13\u5b58\uff0c\u628a\u54cd\u5e94\u901f\u5ea6\u518d\u5f80\u4e0a\u62ac\u4e00\u6863\u3002\u591a\u7ea7\u7f13\u5b58\uff08\u672c\u5730\u8fdb\u7a0b\u7f13\u5b58 + Redis + CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff0c\u628a\u9759\u6001\u8d44\u6e90\u7f13\u5b58\u5230\u79bb\u7528\u6237\u66f4\u8fd1\u7684\u8282\u70b9\uff09\uff09\u7684\u67b6\u6784\u8bbe\u8ba1\uff0c\u6211\u4eec\u5728<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/multi-layer-cache-architecture\/\">\u591a\u5c42\u7f13\u5b58\u67b6\u6784\u5b9e\u8df5<\/a>\u91cc\u6709\u5b8c\u6574\u7684\u5c55\u5f00\u3002<\/p>\n<p>\u7b56\u7565\u4e0a\u7ebf\u540e\u5fc5\u987b\u7528\u6307\u6807\u9a8c\u8bc1\u6548\u679c\uff0c\u91cd\u70b9\u5173\u6ce8\u4e09\u4e2a\u6570\u5b57\uff1a<\/p>\n<ul>\n<li><strong>\u7f13\u5b58\u547d\u4e2d\u7387<\/strong>\uff1a\u5065\u5eb7\u4e1a\u52a1\u901a\u5e38\u5e94\u4fdd\u6301\u5728 90% \u4ee5\u4e0a\uff0c\u8dcc\u7834 80% \u8bf4\u660e\u5931\u6548\u7b56\u7565\u6216\u952e\u8bbe\u8ba1\u6709\u95ee\u9898<\/li>\n<li><strong>\u6570\u636e\u5e93 QPS \u66f2\u7ebf<\/strong>\uff1a\u89c2\u5bdf\u662f\u5426\u5b58\u5728\u4e0e\u7f13\u5b58\u8fc7\u671f\u5468\u671f\u540c\u6b65\u7684\u89c4\u5f8b\u6027\u5c16\u5cf0\uff0c\u6709\u5c16\u5cf0\u5c31\u662f\u96ea\u5d29\u524d\u5146<\/li>\n<li><strong>\u6162\u67e5\u8be2\u4e2d\u65e0\u6548\u952e\u5360\u6bd4<\/strong>\uff1a\u5360\u6bd4\u4e0a\u5347\u662f\u7a7f\u900f\u653b\u51fb\u6700\u76f4\u63a5\u7684\u4fe1\u53f7<\/li>\n<\/ul>\n<p>\u547d\u4e2d\u7387\u7a81\u7136\u4e0b\u8dcc\u914d\u5408\u6570\u636e\u5e93 QPS \u8df3\u5347\uff0c\u57fa\u672c\u53ef\u4ee5\u7acb\u523b\u5b9a\u4f4d\u4e3a\u96ea\u5d29\u4e8b\u4ef6\uff1b\u6162\u67e5\u8be2\u91cc\u51fa\u73b0\u5927\u91cf\u4e0d\u5b58\u5728\u7684 ID\uff0c\u5219\u6307\u5411\u7a7f\u900f\u3002\u8fd9\u4e24\u4e2a\u4fe1\u53f7\u5efa\u8bae\u63a5\u5165\u544a\u8b66\uff0c\u89e6\u53d1\u9608\u503c\u4e0d\u7528\u590d\u6742\uff1a\u547d\u4e2d\u7387\u73af\u6bd4\u4e0b\u964d 10 \u4e2a\u767e\u5206\u70b9\u3001\u6216\u6570\u636e\u5e93 QPS \u8d85\u8fc7\u65e5\u5e38\u5cf0\u503c 2 \u500d\u65f6\u901a\u77e5\u503c\u73ed\u5373\u53ef\u3002Redis \u6570\u636e\u7684\u6301\u4e45\u5316\u4e0e\u6062\u590d\u80fd\u529b\u540c\u6837\u8981\u7eb3\u5165\u68c0\u67e5\uff0c\u5177\u4f53\u64cd\u4f5c\u89c1 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/redis-persistence-recovery\/\">Redis \u6301\u4e45\u5316\u4e0e\u6570\u636e\u6062\u590d\u5b9e\u8df5<\/a>\u3002<\/p>\n<h2>\u603b\u7ed3\uff1a\u4e00\u5957\u53ef\u4ee5\u76f4\u63a5\u843d\u5730\u7684\u9632\u62a4\u6e05\u5355<\/h2>\n<p>\u56de\u5230\u5f00\u5934\u7684\u95ee\u9898\uff1a\u5982\u4f55\u8ba9\u7f13\u5b58\u5c42\u5728\u5f02\u5e38\u6d41\u91cf\u4e0b\u4f9d\u7136\u7a33\u5f97\u4f4f\uff1f\u6838\u5fc3\u7ed3\u8bba\u662f\u6309\u6545\u969c\u5f62\u6001\u5bf9\u75c7\u4e0b\u836f\u2014\u2014\u7a7f\u900f\u9760&#8221;\u8fdb\u5e93\u524d\u62e6\u622a&#8221;\uff08\u53c2\u6570\u6821\u9a8c\u3001\u7a7a\u503c\u7f13\u5b58\u3001\u5e03\u9686\u8fc7\u6ee4\u5668\uff09\uff0c\u96ea\u5d29\u9760&#8221;\u5931\u6548\u65f6\u95f4\u6253\u6563&#8221;\uff08\u968f\u673a TTL\u3001\u4e92\u65a5\u9501\u3001\u9ad8\u53ef\u7528\u515c\u5e95\uff09\uff0c\u70ed\u70b9\u6570\u636e\u9760&#8221;\u4e3b\u52a8\u5237\u65b0 + \u591a\u7ea7\u7f13\u5b58&#8221;\u4fdd\u6301\u5e38\u70ed\u3002<\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u628a\u8fd9\u5957\u65b9\u6848\u843d\u5230\u81ea\u5df1\u7684\u7cfb\u7edf\uff0c\u5efa\u8bae\u6309\u8fd9\u4e2a\u987a\u5e8f\u52a8\u624b\uff1a\u5148\u68c0\u67e5\u73b0\u6709\u7f13\u5b58\u952e\u662f\u5426\u5b58\u5728\u7edf\u4e00 TTL \u7684\u96ea\u5d29\u9690\u60a3\uff0c\u4eca\u5929\u5c31\u53ef\u4ee5\u52a0\u4e0a\u968f\u673a\u504f\u79fb\uff1b\u672c\u5468\u5185\u7ed9\u7a7a\u503c\u67e5\u8be2\u8865\u4e0a\u77ed TTL \u7a7a\u503c\u7f13\u5b58\uff1b\u518d\u628a\u547d\u4e2d\u7387\u548c\u6570\u636e\u5e93 QPS \u7684\u544a\u8b66\u63a5\u8fdb\u503c\u73ed\u7fa4\u3002\u4e4b\u540e\u968f\u7740\u6d41\u91cf\u589e\u957f\uff0c\u518d\u8bc4\u4f30\u662f\u5426\u9700\u8981\u5e03\u9686\u8fc7\u6ee4\u5668\u548c\u591a\u7ea7\u7f13\u5b58\u3002\u5bf9\u4e8e\u6b63\u5728\u89c4\u5212\u670d\u52a1\u5668\u90e8\u7f72\u7684\u56e2\u961f\uff0cHostease \u7684\u4e91\u670d\u52a1\u5668\uff08\u7531\u4e91\u5e73\u53f0\u63d0\u4f9b\u7684\u5f39\u6027<a href=\"https:\/\/cn.hostease.com\/web-hosting\/\">\u865a\u62df\u4e3b\u673a<\/a>\uff09\u652f\u6301\u72ec\u7acb\u5185\u5b58\u4e0e\u81ea\u5b9a\u4e49\u73af\u5883\uff0c\u53ef\u4ee5\u76f4\u63a5\u627f\u8f7d\u81ea\u5efa Redis \u96c6\u7fa4\uff0c\u914d\u5408<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u8fd0\u7ef4\u4e13\u680f<\/a>\u91cc\u7684\u7f13\u5b58\u4e0e\u6570\u636e\u5e93\u5b9e\u8df5\u6587\u7ae0\uff0c\u628a\u6570\u636e\u5c42\u7684\u7a33\u5b9a\u6027\u7cfb\u7edf\u5730\u505a\u624e\u5b9e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u89e3\u51b3 Redis \u7f13\u5b58\u7a7f\u900f\u548c\u7f13\u5b58\u96ea\u5d29\uff1f\u672c\u6587\u7ed9\u51fa\u7a7a\u503c\u7f13\u5b58\u3001\u5e03\u9686\u8fc7\u6ee4\u5668\u3001\u8fc7\u671f\u65f6\u95f4\u6253\u6563\u4e0e\u591a\u7ea7\u7f13\u5b58\u7684\u5177\u4f53\u914d\u7f6e\u548c\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n","protected":false},"author":2,"featured_media":33544,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4099],"tags":[2276,5243,5241,5244,5242],"class_list":["post-33547","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorials","tag-redis","tag-5243","tag-5241","tag-5244","tag-5242"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/redis-cache-protection-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33547","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=33547"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33547\/revisions"}],"predecessor-version":[{"id":33553,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33547\/revisions\/33553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/33544"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=33547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=33547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=33547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}