{"id":82957,"date":"2026-07-25T15:26:14","date_gmt":"2026-07-25T07:26:14","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/82957.html"},"modified":"2026-07-25T15:26:14","modified_gmt":"2026-07-25T07:26:14","slug":"redis%e7%9a%84key%e7%9a%84%e8%bf%87%e6%9c%9f%e7%ad%96%e7%95%a5","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/82957.html","title":{"rendered":"redis\u7684key\u7684\u8fc7\u671f\u7b56\u7565"},"content":{"rendered":"<p>Redis Key \u8fc7\u671f\u7b56\u7565\u8be6\u89e3&#xff08;\u8fc7\u671f\u65f6\u95f4\u3001\u5220\u9664\u673a\u5236\u3001\u5185\u5b58\u6dd8\u6c70\u673a\u5236&#xff09;<\/p>\n<h3>\u4e00\u3001\u524d\u8a00<\/h3>\n<p>Redis \u4f5c\u4e3a\u9ad8\u6027\u80fd\u5185\u5b58\u6570\u636e\u5e93&#xff0c;\u5e38\u7528\u4e8e\u7f13\u5b58\u3001\u9650\u6d41\u3001\u5206\u5e03\u5f0f\u9501\u3001\u4e34\u65f6\u6570\u636e\u5b58\u50a8\u7b49\u573a\u666f\u3002\u7edd\u5927\u591a\u6570\u4e1a\u52a1\u6570\u636e\u90fd\u4e0d\u9700\u8981\u6c38\u4e45\u5b58\u50a8&#xff0c;\u56e0\u6b64 Redis \u7684 Key \u8fc7\u671f\u4e0e\u5220\u9664\u673a\u5236\u662f\u540e\u7aef\u5f00\u53d1\u5fc5\u987b\u638c\u63e1\u7684\u6280\u80fd<\/p>\n<p>\u5f88\u591a\u540c\u5b66\u5bb9\u6613\u6df7\u6dc6\u4e24\u4e2a\u6982\u5ff5&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u8fc7\u671f\u5220\u9664\u7b56\u7565&#xff1a;Key \u5230\u671f\u4e86\u600e\u4e48\u88ab\u5220\u9664&#xff1f;<\/p>\n<\/li>\n<li>\n<p>\u5185\u5b58\u6dd8\u6c70\u7b56\u7565&#xff1a;\u5185\u5b58\u6ee1\u4e86\u5220\u8c01&#xff1f;<\/p>\n<\/li>\n<\/ul>\n<h4>2. \u8fc7\u671f\u6570\u636e\u5b58\u50a8\u539f\u7406<\/h4>\n<p>Redis \u4e2d\u6240\u6709\u5e26\u8fc7\u671f\u65f6\u95f4\u7684 Key&#xff0c;\u90fd\u4f1a\u5355\u72ec\u7ef4\u62a4\u4e00\u5f20 \u8fc7\u671f\u5b57\u5178&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5b57\u5178\u7684 Key&#xff1a;Redis \u7684\u771f\u5b9e key<\/p>\n<\/li>\n<li>\n<p>\u5b57\u5178\u7684 Value&#xff1a;\u8fc7\u671f\u65f6\u95f4\u6233&#xff08;\u7cbe\u786e\u5230\u6beb\u79d2&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p>\u4e5f\u5c31\u662f\u8bf4Redis \u5224\u65ad key \u662f\u5426\u8fc7\u671f&#xff0c;\u5c31\u662f\u53bb\u8fc7\u671f\u5b57\u5178\u5bf9\u6bd4\u5f53\u524d\u65f6\u95f4\u6233\u3002<\/p>\n<h4>3. \u6ce8\u610f&#xff1a;\u8fc7\u671f\u65f6\u95f4\u662f\u300c\u7edd\u5bf9\u65f6\u95f4\u300d<\/h4>\n<p>expire \u8bbe\u7f6e\u7684\u662f\u7edd\u5bf9\u65f6\u95f4\u6233&#xff0c;\u5982\u679c\u4fee\u6539\u670d\u52a1\u5668\u65f6\u95f4&#xff0c;\u4f1a\u5bfc\u81f4 key \u63d0\u524d\u8fc7\u671f\u6216\u6c38\u4e45\u4e0d\u8fc7\u671f\u3002<\/p>\n<h3>\u4e09\u3001Redis \u4e09\u79cd\u8fc7\u671f\u5220\u9664\u7b56\u7565<\/h3>\n<p>Redis \u9488\u5bf9\u5df2\u7ecf\u8fc7\u671f\u7684 Key&#xff0c;\u91c7\u7528 \u60f0\u6027\u5220\u9664 &#043; \u5b9a\u671f\u5220\u9664 \u7ec4\u5408\u7b56\u7565&#xff0c;\u6dd8\u6c70\u6240\u6709\u8fc7\u671f\u6570\u636e\u3002<\/p>\n<h4>1. \u60f0\u6027\u5220\u9664&#xff08;\u88ab\u52a8\u5220\u9664&#xff09;<\/h4>\n<p>\u89c4\u5219&#xff1a;Key \u8fc7\u671f\u4e0d\u4f1a\u7acb\u523b\u5220&#xff0c;\u7b49\u7528\u6237\u4e0b\u6b21\u8bbf\u95ee\u65f6\u518d\u5224\u65ad\u662f\u5426\u8fc7\u671f\u3002<\/p>\n<p>\u6d41\u7a0b&#xff1a;<\/p>\n<li>\n<p>\u5ba2\u6237\u7aef\u67e5\u8be2 key<\/p>\n<\/li>\n<li>\n<p>Redis \u5148\u68c0\u67e5\u8fc7\u671f\u5b57\u5178<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u5df2\u8fc7\u671f&#xff1a;\u76f4\u63a5\u5220\u9664 key&#xff0c;\u8fd4\u56de\u7a7a<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u672a\u8fc7\u671f&#xff1a;\u6b63\u5e38\u8fd4\u56de\u6570\u636e<\/p>\n<\/li>\n<p>\u4f18\u70b9&#xff1a;<\/p>\n<p>1&#xff0c;\u6781\u81f4\u8282\u7701 CPU \u8d44\u6e90<\/p>\n<p>2&#xff0c;\u4e0d\u4f1a\u6d6a\u8d39\u7b97\u529b\u5220\u51b7\u95e8 key<\/p>\n<p>\u7f3a\u70b9&#xff1a;\u5927\u91cf\u51b7\u95e8\u8fc7\u671f key \u6c38\u8fdc\u6ca1\u4eba\u8bbf\u95ee&#xff0c;\u4e00\u76f4\u5360\u7528\u5185\u5b58&#xff0c;\u9020\u6210\u5185\u5b58\u6cc4\u6f0f<\/p>\n<h4>2. \u5b9a\u671f\u5220\u9664&#xff08;\u4e3b\u52a8\u5220\u9664&#xff09;<\/h4>\n<p>\u4e3a\u4e86\u89e3\u51b3\u60f0\u6027\u5220\u9664\u7684\u5185\u5b58\u79ef\u538b\u95ee\u9898&#xff0c;Redis \u5f00\u542f\u5b9a\u65f6\u8f6e\u8be2\u6e05\u7406\u3002<\/p>\n<p>\u89c4\u5219&#xff1a;<\/p>\n<p>1&#xff0c;\u9ed8\u8ba4\u6bcf 100ms \u6267\u884c\u4e00\u6b21<\/p>\n<p>2&#xff0c;\u968f\u673a\u62bd\u53d6\u90e8\u5206\u5e26\u8fc7\u671f\u7684 key \u68c0\u67e5<\/p>\n<p>3&#xff0c;\u5220\u9664\u5df2\u8fc7\u671f\u7684 key<\/p>\n<p>4&#xff0c;\u4e0d\u4f1a\u626b\u63cf\u5168\u91cf key&#xff0c;\u9632\u6b62 CPU \u6253\u6ee1&#xff0c;\u963b\u585e\u5bf9\u6b63\u5e38\u7684\u4e1a\u52a1\u8bf7\u6c42\u7684\u5904\u7406<\/p>\n<p>\u4f18\u70b9&#xff1a;\u7f13\u89e3\u8fc7\u671f key \u5185\u5b58\u79ef\u538b\u95ee\u9898<\/p>\n<p>\u7f3a\u70b9&#xff1a;\u968f\u673a\u91c7\u6837&#xff0c;\u4f9d\u7136\u53ef\u80fd\u6709\u5927\u91cf\u8fc7\u671f key \u6f0f\u5220<\/p>\n<h4>3. \u7ed3\u8bba&#xff1a;\u53cc\u7b56\u7565\u7ec4\u5408<\/h4>\n<p>\u60f0\u6027\u5220\u9664 &#043; \u5b9a\u671f\u5220\u9664 &#061; Redis \u6807\u51c6\u8fc7\u671f\u5220\u9664\u7b56\u7565<\/p>\n<p>\u4f46\u662f\u5373\u4fbf\u5982\u6b64&#xff0c;\u4f9d\u7136\u5b58\u5728\u5927\u91cf\u8fc7\u671f key \u5806\u79ef\u5185\u5b58\u7684\u98ce\u9669 \u2192 \u6240\u4ee5\u9700\u8981\u5185\u5b58\u6dd8\u6c70\u7b56\u7565\u515c\u5e95\u3002<\/p>\n<h3>\u56db\u3001Redis \u5185\u5b58\u6dd8\u6c70\u7b56\u7565&#xff08;\u515c\u5e95\u7b56\u7565&#xff09;<\/h3>\n<p>\u5f53 Redis \u8fbe\u5230 maxmemory \u6700\u5927\u5185\u5b58\u9650\u5236 \u65f6&#xff0c;\u4f1a\u89e6\u53d1\u5185\u5b58\u6dd8\u6c70\u7b56\u7565&#xff0c;\u4e3b\u52a8\u5220\u6570\u636e\u91ca\u653e\u7a7a\u95f4\u3002<\/p>\n<h4>1. \u4e03\u79cd\u6dd8\u6c70\u7b56\u7565<\/h4>\n<ul>\n<li>\n<p>noeviction&#xff1a;\u9ed8\u8ba4\u7b56\u7565&#xff0c;\u4e0d\u5220\u6570\u636e&#xff0c;\u76f4\u63a5\u62a5\u9519<\/p>\n<\/li>\n<li>\n<p>volatile-lru&#xff1a;\u53ea\u6dd8\u6c70\u5e26\u8fc7\u671f\u7684 key&#xff0c;\u4f18\u5148\u5220\u6700\u5c11\u4f7f\u7528<\/p>\n<\/li>\n<li>\n<p>allkeys-lru&#xff1a;\u6dd8\u6c70\u6240\u6709 key&#xff0c;\u4f18\u5148\u5220\u6700\u5c11\u4f7f\u7528&#xff08;\u6700\u5e38\u7528&#xff09;<\/p>\n<\/li>\n<li>\n<p>volatile-lfu&#xff1a;\u8fc7\u671f key \u4e2d\u5220\u9664\u4f7f\u7528\u9891\u7387\u6700\u4f4e<\/p>\n<\/li>\n<li>\n<p>allkeys-lfu&#xff1a;\u6240\u6709 key \u4e2d\u5220\u9664\u4f7f\u7528\u9891\u7387\u6700\u4f4e<\/p>\n<\/li>\n<li>\n<p>volatile-random&#xff1a;\u8fc7\u671f key \u968f\u673a\u5220<\/p>\n<\/li>\n<li>\n<p>allkeys-random&#xff1a;\u6240\u6709 key \u968f\u673a\u5220<\/p>\n<\/li>\n<\/ul>\n<h4>2. \u751f\u4ea7\u73af\u5883\u63a8\u8350\u914d\u7f6e<\/h4>\n<p>\u7f13\u5b58\u4e1a\u52a1\u9996\u9009&#xff1a;allkeys-lru<\/p>\n<p>\u7406\u7531&#xff1a;\u70ed\u70b9\u6570\u636e\u5e38\u9a7b&#xff0c;\u51b7\u95e8\u6570\u636e\u6dd8\u6c70&#xff0c;\u7f13\u5b58\u547d\u4e2d\u7387\u6700\u9ad8\u3002<\/p>\n<h3>\u4e94\u3001\u9762\u8bd5\u9ad8\u9891\u603b\u7ed3<\/h3>\n<h4>1. 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