{"id":190592,"date":"2024-11-12T13:52:21","date_gmt":"2024-11-12T05:52:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/190592\/"},"modified":"2024-11-12T13:52:22","modified_gmt":"2024-11-12T05:52:22","slug":"%e5%95%8f%e9%a1%8c%e5%88%a9%e7%94%a8redis%e8%a7%a3%e6%94%be%e7%b6%b2%e7%ab%99%e7%9a%84%e5%bf%ab%e5%8f%96%e7%a9%bf%e9%80%8f%e5%9b%b0%e5%a2%83%ef%bc%88redis-%e8%a7%a3%e6%b1%ba%e5%bf%ab%e5%8f%96%e7%a9%bf","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/190592\/","title":{"rendered":"\u554f\u984c\u5229\u7528Redis\u89e3\u653e\u7db2\u7ad9\u7684\u5feb\u53d6\u7a7f\u900f\u56f0\u5883\uff08redis \u89e3\u6c7a\u5feb\u53d6\u7a7f\u900f\uff09"},"content":{"rendered":"<h1 id=\"%e5%95%8f%e9%a1%8c%e5%88%a9%e7%94%a8redis%e8%a7%a3%e6%94%be%e7%b6%b2%e7%ab%99%e7%9a%84%e5%bf%ab%e5%8f%96%e7%a9%bf%e9%80%8f%e5%9b%b0%e5%a2%83-UjvFHRgAVf\">\u554f\u984c\u5229\u7528Redis\u89e3\u653e\u7db2\u7ad9\u7684\u5feb\u53d6\u7a7f\u900f\u56f0\u5883<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u8def\u74b0\u5883\u4e2d\uff0c\u7db2\u7ad9\u7684\u6027\u80fd\u548c\u53ef\u7528\u6027\u5c0d\u65bc\u7528\u6236\u9ad4\u9a57\u81f3\u95dc\u91cd\u8981\u3002\u5feb\u53d6\u6280\u8853\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u63d0\u5347\u7db2\u7ad9\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u6e1b\u5c11\u4f3a\u670d\u5668\u8ca0\u64d4\u3002\u7136\u800c\uff0c\u5feb\u53d6\u7a7f\u900f\u554f\u984c\u537b\u6210\u70ba\u4e86\u8a31\u591a\u7db2\u7ad9\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5feb\u53d6\u7a7f\u900f\u7684\u6982\u5ff5\u53ca\u5176\u5c0d\u7db2\u7ad9\u6027\u80fd\u7684\u5f71\u97ff\uff0c\u4e26\u4ecb\u7d39\u5982\u4f55\u5229\u7528Redis\u4f86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%bf%ab%e5%8f%96%e7%a9%bf%e9%80%8f%ef%bc%9f-UjvFHRgAVf\">\u4ec0\u9ebc\u662f\u5feb\u53d6\u7a7f\u900f\uff1f<\/h2>\n<p>\u5feb\u53d6\u7a7f\u900f\u662f\u6307\u7576\u7528\u6236\u8acb\u6c42\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u6578\u64da\u6642\uff0c\u8acb\u6c42\u6703\u76f4\u63a5\u5230\u9054\u5f8c\u7aef\u6578\u64da\u5eab\uff0c\u5c0e\u81f4\u5feb\u53d6\u7121\u6cd5\u767c\u63ee\u4f5c\u7528\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u7528\u6236\u8acb\u6c42\u7684\u6578\u64da\u5728\u5feb\u53d6\u4e2d\u4e0d\u5b58\u5728\uff0c\u4e26\u4e14\u5f8c\u7aef\u6578\u64da\u5eab\u4e5f\u7121\u6cd5\u627e\u5230\u8a72\u6578\u64da\u3002\u9019\u4e0d\u50c5\u589e\u52a0\u4e86\u6578\u64da\u5eab\u7684\u8ca0\u64d4\uff0c\u9084\u53ef\u80fd\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u751a\u81f3\u5f15\u767c\u670d\u52d9\u5668\u5d29\u6f70\u3002<\/p>\n<h2 id=\"%e5%bf%ab%e5%8f%96%e7%a9%bf%e9%80%8f%e7%9a%84%e5%bd%b1%e9%9f%bf-UjvFHRgAVf\">\u5feb\u53d6\u7a7f\u900f\u7684\u5f71\u97ff<\/h2>\n<ul>\n<li><strong>\u6027\u80fd\u4e0b\u964d\uff1a<\/strong>\u6bcf\u6b21\u8acb\u6c42\u90fd\u9700\u8981\u67e5\u8a62\u6578\u64da\u5eab\uff0c\u589e\u52a0\u4e86\u5ef6\u9072\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u6d6a\u8cbb\uff1a<\/strong>\u5927\u91cf\u7684\u7121\u6548\u8acb\u6c42\u6703\u6d88\u8017\u4f3a\u670d\u5668\u8cc7\u6e90\uff0c\u5f71\u97ff\u6b63\u5e38\u8acb\u6c42\u7684\u8655\u7406\u3002<\/li>\n<li><strong>\u5b89\u5168\u98a8\u96aa\uff1a<\/strong>\u653b\u64ca\u8005\u53ef\u80fd\u5229\u7528\u5feb\u53d6\u7a7f\u900f\u9032\u884c\u62d2\u7d55\u670d\u52d9\u653b\u64ca\uff08DoS\uff09\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8redis%e8%a7%a3%e6%b1%ba%e5%bf%ab%e5%8f%96%e7%a9%bf%e9%80%8f%e5%95%8f%e9%a1%8c-UjvFHRgAVf\">\u5982\u4f55\u5229\u7528Redis\u89e3\u6c7a\u5feb\u53d6\u7a7f\u900f\u554f\u984c<\/h2>\n<p>Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5feb\u53d6\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7de9\u89e3\u5feb\u53d6\u7a7f\u900f\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5229\u7528Redis\u89e3\u6c7a\u5feb\u53d6\u7a7f\u900f\u7684\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%b8%83%e9%9a%86%e9%81%8e%e6%bf%be%e5%99%a8%ef%bc%88bloom-filter%ef%bc%89-UjvFHRgAVf\">1. \u4f7f\u7528\u5e03\u9686\u904e\u6ffe\u5668\uff08Bloom Filter\uff09<\/h3>\n<p>\u5e03\u9686\u904e\u6ffe\u5668\u662f\u4e00\u7a2e\u7a7a\u9593\u6548\u7387\u9ad8\u7684\u6982\u7387\u578b\u6578\u64da\u7d50\u69cb\uff0c\u53ef\u4ee5\u7528\u4f86\u5224\u65b7\u4e00\u500b\u5143\u7d20\u662f\u5426\u5728\u4e00\u500b\u96c6\u5408\u4e2d\u3002\u901a\u904e\u5728Redis\u4e2d\u5be6\u73fe\u5e03\u9686\u904e\u6ffe\u5668\uff0c\u53ef\u4ee5\u5728\u8acb\u6c42\u5230\u9054\u6578\u64da\u5eab\u4e4b\u524d\uff0c\u5148\u6aa2\u67e5\u8a72\u8acb\u6c42\u7684\u6578\u64da\u662f\u5426\u5b58\u5728\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u5730\u904e\u6ffe\u6389\u4e0d\u5b58\u5728\u7684\u8acb\u6c42\uff0c\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u67e5\u8a62\u3002<\/p>\n<pre><code>\n# \u5047\u8a2d\u4f7f\u7528Python\u548credis-py\u5eab\nimport redis\nfrom pybloom_live import BloomFilter\n\n# \u9023\u63a5\u5230Redis\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\n# \u5275\u5efa\u5e03\u9686\u904e\u6ffe\u5668\nbloom = BloomFilter(capacity=1000000, error_rate=0.001)\n\n# \u5c07\u5b58\u5728\u7684\u6578\u64da\u6dfb\u52a0\u5230\u5e03\u9686\u904e\u6ffe\u5668\nfor item in existing_data:\n    bloom.add(item)\n\n# \u6aa2\u67e5\u8acb\u6c42\u7684\u6578\u64da\u662f\u5426\u5b58\u5728\nif request_data in bloom:\n    # \u6578\u64da\u53ef\u80fd\u5b58\u5728\uff0c\u67e5\u8a62\u6578\u64da\u5eab\nelse:\n    # \u6578\u64da\u4e0d\u5b58\u5728\uff0c\u76f4\u63a5\u8fd4\u56de\u932f\u8aa4\n<\/code><\/pre>\n<h3 id=\"2-%e8%a8%ad%e7%bd%ae%e5%bf%ab%e5%8f%96%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-UjvFHRgAVf\">2. \u8a2d\u7f6e\u5feb\u53d6\u904e\u671f\u6642\u9593<\/h3>\n<p>\u5c0d\u65bc\u67d0\u4e9b\u6578\u64da\uff0c\u8a2d\u7f6e\u5408\u7406\u7684\u5feb\u53d6\u904e\u671f\u6642\u9593\u53ef\u4ee5\u6e1b\u5c11\u5feb\u53d6\u7a7f\u900f\u7684\u5f71\u97ff\u3002\u7576\u6578\u64da\u904e\u671f\u6642\uff0c\u7cfb\u7d71\u6703\u81ea\u52d5\u5f9e\u6578\u64da\u5eab\u4e2d\u91cd\u65b0\u52a0\u8f09\u6578\u64da\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5feb\u53d6\u4e2d\u7684\u6578\u64da\u662f\u6700\u65b0\u7684\uff0c\u4e26\u4e14\u6e1b\u5c11\u7121\u6548\u8acb\u6c42\u7684\u6578\u91cf\u3002<\/p>\n<pre><code>\n# \u8a2d\u7f6e\u5feb\u53d6\u904e\u671f\u6642\u9593\nr.setex('key', 3600, 'value')  # 1\u5c0f\u6642\u5f8c\u904e\u671f\n<\/code><\/pre>\n<h3 id=\"3-%e9%8c%af%e8%aa%a4%e8%ab%8b%e6%b1%82%e7%9a%84%e5%bf%ab%e5%8f%96-UjvFHRgAVf\">3. \u932f\u8aa4\u8acb\u6c42\u7684\u5feb\u53d6<\/h3>\n<p>\u5c0d\u65bc\u4e00\u4e9b\u660e\u78ba\u4e0d\u5b58\u5728\u7684\u8acb\u6c42\uff0c\u53ef\u4ee5\u8003\u616e\u5c07\u9019\u4e9b\u8acb\u6c42\u7684\u7d50\u679c\u5feb\u53d6\u4e00\u6bb5\u6642\u9593\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u7528\u6236\u91cd\u8907\u8acb\u6c42\u76f8\u540c\u7684\u4e0d\u5b58\u5728\u7684\u6578\u64da\uff0c\u4e5f\u4e0d\u6703\u518d\u6b21\u67e5\u8a62\u6578\u64da\u5eab\uff0c\u5f9e\u800c\u6e1b\u5c11\u8cc7\u6e90\u6d6a\u8cbb\u3002<\/p>\n<pre><code>\n# \u5c07\u932f\u8aa4\u8acb\u6c42\u5feb\u53d6\nr.setex('invalid_key', 300, 'not_found')  # 5\u5206\u9418\u5f8c\u904e\u671f\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-UjvFHRgAVf\">\u7e3d\u7d50<\/h2>\n<p>\u5feb\u53d6\u7a7f\u900f\u554f\u984c\u5c0d\u65bc\u7db2\u7ad9\u6027\u80fd\u7684\u5f71\u97ff\u4e0d\u5bb9\u5ffd\u8996\uff0c\u800cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5feb\u53d6\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u7de9\u89e3\u9019\u4e00\u554f\u984c\u3002\u901a\u904e\u4f7f\u7528\u5e03\u9686\u904e\u6ffe\u5668\u3001\u8a2d\u7f6e\u5feb\u53d6\u904e\u671f\u6642\u9593\u4ee5\u53ca\u5feb\u53d6\u932f\u8aa4\u8acb\u6c42\u7b49\u7b56\u7565\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u58d3\u529b\uff0c\u63d0\u5347\u7db2\u7ad9\u7684\u6574\u9ad4\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u548c\u7a69\u5b9a\u6027\u7684\u7db2\u7ad9\uff0c\u9078\u64c7\u5408\u9069\u7684\u5feb\u53d6\u6280\u8853\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u82e5\u60a8\u5c0d\u65bc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u6216<em><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/em>\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u6709\u6548\u89e3\u6c7a\u7db2\u7ad9\u5feb\u53d6\u7a7f\u900f\u554f\u984c\uff0c\u63d0\u5347\u6027\u80fd\u8207\u7a69\u5b9a\u6027\uff0c\u78ba\u4fdd\u7528\u6236\u9ad4\u9a57\u4e0d\u53d7\u5f71\u97ff\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-190592","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190592","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=190592"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190592\/revisions"}],"predecessor-version":[{"id":190593,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190592\/revisions\/190593"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=190592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=190592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=190592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}