{"id":158613,"date":"2024-11-03T03:20:19","date_gmt":"2024-11-02T19:20:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158613\/"},"modified":"2024-11-03T03:20:20","modified_gmt":"2024-11-02T19:20:20","slug":"%e6%a7%8b%e5%bb%ba%e9%ab%98%e5%8f%af%e7%94%a8%e7%b3%bb%e7%b5%b1-redis-%e7%b5%90%e5%90%88%e7%b7%a9%e5%ad%98%e9%98%b2%e6%ad%a2%e9%9b%aa%e5%b4%a9%e5%92%8c%e7%a9%bf%e9%80%8f%ef%bc%88redis-%e9%98%b2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158613\/","title":{"rendered":"\u69cb\u5efa\u9ad8\u53ef\u7528\u7cfb\u7d71 Redis \u7d50\u5408\u7de9\u5b58\u9632\u6b62\u96ea\u5d29\u548c\u7a7f\u900f\uff08Redis \u9632\u6b62\u96ea\u5d29\u548c\u7a7f\u900f\uff09"},"content":{"rendered":"<h1 id=\"%e6%a7%8b%e5%bb%ba%e9%ab%98%e5%8f%af%e7%94%a8%e7%b3%bb%e7%b5%b1%ef%bc%9aredis-%e7%b5%90%e5%90%88%e7%b7%a9%e5%ad%98%e9%98%b2%e6%ad%a2%e9%9b%aa%e5%b4%a9%e5%92%8c%e7%a9%bf%e9%80%8f-MjjvxXLlXZ\">\u69cb\u5efa\u9ad8\u53ef\u7528\u7cfb\u7d71\uff1aRedis \u7d50\u5408\u7de9\u5b58\u9632\u6b62\u96ea\u5d29\u548c\u7a7f\u900f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u6027\u80fd\u548c\u53ef\u7528\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u96a8\u8457\u7528\u6236\u9700\u6c42\u7684\u589e\u52a0\uff0c\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u97ff\u61c9\u901f\u5ea6\u6210\u70ba\u4e86\u4f01\u696d\u6210\u529f\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002Redis \u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u7cfb\u7d71\u4e2d\u3002\u7136\u800c\uff0c\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0cRedis \u4e5f\u9762\u81e8\u8457\u96ea\u5d29\u548c\u7a7f\u900f\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528 Redis \u69cb\u5efa\u9ad8\u53ef\u7528\u7cfb\u7d71\uff0c\u4e26\u6709\u6548\u9632\u6b62\u96ea\u5d29\u548c\u7a7f\u900f\u554f\u984c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%9b%aa%e5%b4%a9%e5%92%8c%e7%a9%bf%e9%80%8f%ef%bc%9f-MjjvxXLlXZ\">\u4ec0\u9ebc\u662f\u96ea\u5d29\u548c\u7a7f\u900f\uff1f<\/h2>\n<p>\u5728\u6df1\u5165\u63a2\u8a0e\u89e3\u6c7a\u65b9\u6848\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3\u96ea\u5d29\u548c\u7a7f\u900f\u7684\u6982\u5ff5\u3002<\/p>\n<ul>\n<li><strong>\u96ea\u5d29\uff1a<\/strong>\u7576\u5927\u91cf\u8acb\u6c42\u540c\u6642\u5230\u9054\u4e00\u500b\u7cfb\u7d71\uff0c\u800c\u8a72\u7cfb\u7d71\u7684\u7de9\u5b58\u5931\u6548\uff0c\u5c0e\u81f4\u6240\u6709\u8acb\u6c42\u90fd\u76f4\u63a5\u8a2a\u554f\u5f8c\u7aef\u6578\u64da\u5eab\uff0c\u9019\u6703\u9020\u6210\u6578\u64da\u5eab\u77ac\u9593\u627f\u53d7\u5de8\u5927\u7684\u58d3\u529b\uff0c\u6700\u7d42\u53ef\u80fd\u5c0e\u81f4\u7cfb\u7d71\u5d29\u6f70\u3002<\/li>\n<li><strong>\u7a7f\u900f\uff1a<\/strong>\u7576\u8acb\u6c42\u7684\u6578\u64da\u5728\u7de9\u5b58\u548c\u6578\u64da\u5eab\u4e2d\u90fd\u4e0d\u5b58\u5728\u6642\uff0c\u9019\u4e9b\u8acb\u6c42\u6703\u76f4\u63a5\u6253\u5230\u6578\u64da\u5eab\uff0c\u9020\u6210\u4e0d\u5fc5\u8981\u7684\u8cc7\u6e90\u6d6a\u8cbb\u3002\u9019\u901a\u5e38\u662f\u7531\u65bc\u7528\u6236\u8acb\u6c42\u7684\u6578\u64da\u4e0d\u6b63\u78ba\u6216\u4e0d\u5b58\u5728\u6240\u5f15\u8d77\u7684\u3002<\/li>\n<\/ul>\n<h2 id=\"redis-%e5%a6%82%e4%bd%95%e9%98%b2%e6%ad%a2%e9%9b%aa%e5%b4%a9%e5%92%8c%e7%a9%bf%e9%80%8f-MjjvxXLlXZ\">Redis \u5982\u4f55\u9632\u6b62\u96ea\u5d29\u548c\u7a7f\u900f<\/h2>\n<p>\u70ba\u4e86\u6709\u6548\u9632\u6b62\u96ea\u5d29\u548c\u7a7f\u900f\uff0c\u6211\u5011\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e5%90%88%e7%90%86%e7%9a%84%e7%b7%a9%e5%ad%98%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-MjjvxXLlXZ\">1. \u8a2d\u7f6e\u5408\u7406\u7684\u7de9\u5b58\u904e\u671f\u6642\u9593<\/h3>\n<p>\u5c0d\u65bc\u7de9\u5b58\u7684\u6578\u64da\uff0c\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u96ea\u5d29\u7684\u98a8\u96aa\u3002\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u96a8\u6a5f\u904e\u671f\u6642\u9593\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5927\u91cf\u7de9\u5b58\u540c\u6642\u5931\u6548\u7684\u60c5\u6cc1\u3002<\/p>\n<pre><code>\n# \u8a2d\u7f6e\u96a8\u6a5f\u904e\u671f\u6642\u9593\u7684\u793a\u4f8b\nexpire_time = random.randint(60, 300)  # \u96a8\u6a5f\u8a2d\u7f6e\u904e\u671f\u6642\u9593\nredis.set(\"key\", \"value\", ex=expire_time)\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e4%ba%92%e6%96%a5%e9%8e%96-MjjvxXLlXZ\">2. \u4f7f\u7528\u4e92\u65a5\u9396<\/h3>\n<p>\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e92\u65a5\u9396\u4f86\u4fdd\u8b77\u6578\u64da\u7684\u52a0\u8f09\u904e\u7a0b\u3002\u7576\u4e00\u500b\u8acb\u6c42\u6b63\u5728\u52a0\u8f09\u6578\u64da\u6642\uff0c\u5176\u4ed6\u8acb\u6c42\u53ef\u4ee5\u7b49\u5f85\uff0c\u907f\u514d\u540c\u6642\u8a2a\u554f\u6578\u64da\u5eab\u3002<\/p>\n<pre><code>\n# \u4f7f\u7528 Redis \u7684 SETNX \u547d\u4ee4\u5be6\u73fe\u4e92\u65a5\u9396\nif redis.set(\"lock_key\", \"lock_value\", nx=True, ex=5):\n    # \u52a0\u8f09\u6578\u64da\n    data = load_data_from_db()\n    redis.set(\"cache_key\", data)\nelse:\n    # \u7b49\u5f85\u6216\u91cd\u8a66\n    pass\n<\/code><\/pre>\n<h3 id=\"3-%e9%98%b2%e6%ad%a2%e7%a9%bf%e9%80%8f%e7%9a%84%e7%ad%96%e7%95%a5-MjjvxXLlXZ\">3. \u9632\u6b62\u7a7f\u900f\u7684\u7b56\u7565<\/h3>\n<p>\u5c0d\u65bc\u7a7f\u900f\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5e03\u9686\u904e\u6ffe\u5668\uff08Bloom Filter\uff09\u4f86\u904e\u6ffe\u4e0d\u5b58\u5728\u7684\u8acb\u6c42\u3002\u7576\u8acb\u6c42\u5230\u9054\u6642\uff0c\u9996\u5148\u6aa2\u67e5\u5e03\u9686\u904e\u6ffe\u5668\uff0c\u5982\u679c\u8acb\u6c42\u7684\u6578\u64da\u4e0d\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u8fd4\u56de\uff0c\u4e0d\u518d\u67e5\u8a62\u6578\u64da\u5eab\u3002<\/p>\n<pre><code>\n# \u5e03\u9686\u904e\u6ffe\u5668\u7684\u7c21\u55ae\u793a\u4f8b\nbloom_filter.add(\"non_existent_key\")\nif not bloom_filter.contains(\"request_key\"):\n    return \"Data not found\"\nelse:\n    data = redis.get(\"request_key\") or load_data_from_db()\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-MjjvxXLlXZ\">\u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u5408\u7406\u7684\u7de9\u5b58\u7b56\u7565\u548c\u6280\u8853\u624b\u6bb5\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62 Redis \u4e2d\u7684\u96ea\u5d29\u548c\u7a7f\u900f\u554f\u984c\uff0c\u5f9e\u800c\u69cb\u5efa\u4e00\u500b\u9ad8\u53ef\u7528\u7684\u7cfb\u7d71\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u80fd\u63d0\u5347\u7528\u6236\u7684\u9ad4\u9a57\u3002\u5728\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u670d\u52d9\u6642\uff0c\u78ba\u4fdd\u5176\u652f\u6301\u9ad8\u6548\u7684\u7de9\u5b58\u548c\u6578\u64da\u8655\u7406\u80fd\u529b\uff0c\u5c07\u6709\u52a9\u65bc\u5be6\u73fe\u66f4\u7a69\u5b9a\u7684\u61c9\u7528\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528 Redis \u69cb\u5efa\u9ad8\u53ef\u7528\u7cfb\u7d71\uff0c\u6709\u6548\u9632\u6b62\u7de9\u5b58\u96ea\u5d29\u548c\u7a7f\u900f\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\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-158613","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158613","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=158613"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158613\/revisions"}],"predecessor-version":[{"id":158614,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158613\/revisions\/158614"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}