{"id":194391,"date":"2024-11-13T06:16:18","date_gmt":"2024-11-12T22:16:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194391\/"},"modified":"2024-11-13T06:16:20","modified_gmt":"2024-11-12T22:16:20","slug":"%e6%87%89%e5%b0%8d%e7%b4%85%e8%89%b2%e5%a4%a9%e7%a9%ba%e4%b8%8b%ef%bc%8c%e5%a6%82%e4%bd%95%e6%87%89%e5%b0%8dredis%e9%9b%aa%e5%b4%a9%ef%bc%88redis%e9%9b%aa%e5%b4%a9%e5%92%8c%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194391\/","title":{"rendered":"\u61c9\u5c0d\u7d05\u8272\u5929\u7a7a\u4e0b\uff0c\u5982\u4f55\u61c9\u5c0dRedis\u96ea\u5d29\uff08redis\u96ea\u5d29\u548c\uff09"},"content":{"rendered":"<h1 id=\"%e6%87%89%e5%b0%8d%e7%b4%85%e8%89%b2%e5%a4%a9%e7%a9%ba%e4%b8%8b%ef%bc%8c%e5%a6%82%e4%bd%95%e6%87%89%e5%b0%8dredis%e9%9b%aa%e5%b4%a9-KNexUVqTCO\">\u61c9\u5c0d\u7d05\u8272\u5929\u7a7a\u4e0b\uff0c\u5982\u4f55\u61c9\u5c0dRedis\u96ea\u5d29<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u7b49\u5834\u666f\u3002\u7136\u800c\uff0c\u96a8\u8457\u4f7f\u7528\u91cf\u7684\u589e\u52a0\uff0cRedis\u96ea\u5d29\u554f\u984c\u9010\u6f38\u5f15\u8d77\u4e86\u958b\u767c\u8005\u7684\u95dc\u6ce8\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u96ea\u5d29\u7684\u6210\u56e0\u53ca\u5176\u61c9\u5c0d\u7b56\u7565\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%9b%aa%e5%b4%a9%ef%bc%9f-KNexUVqTCO\">\u4ec0\u9ebc\u662fRedis\u96ea\u5d29\uff1f<\/h2>\n<p>Redis\u96ea\u5d29\u662f\u6307\u5728\u9ad8\u8ca0\u8f09\u60c5\u6cc1\u4e0b\uff0cRedis\u670d\u52d9\u5668\u56e0\u70ba\u5927\u91cf\u7684\u8acb\u6c42\u540c\u6642\u5230\u9054\u800c\u5c0e\u81f4\u7684\u6027\u80fd\u4e0b\u964d\u6216\u5d29\u6f70\u73fe\u8c61\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u7de9\u5b58\u5931\u6548\u7684\u77ac\u9593\uff0c\u7576\u5927\u91cf\u8acb\u6c42\u540c\u6642\u8a66\u5716\u5f9e\u5f8c\u7aef\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u9020\u6210\u6578\u64da\u5eab\u7684\u904e\u8f09\uff0c\u6700\u7d42\u5c0e\u81f4\u6574\u500b\u7cfb\u7d71\u7684\u5d29\u6f70\u3002<\/p>\n<h2 id=\"redis%e9%9b%aa%e5%b4%a9%e7%9a%84%e6%88%90%e5%9b%a0-KNexUVqTCO\">Redis\u96ea\u5d29\u7684\u6210\u56e0<\/h2>\n<ul>\n<li><strong>\u7de9\u5b58\u5931\u6548\uff1a<\/strong>\u7576\u7de9\u5b58\u4e2d\u7684\u6578\u64da\u904e\u671f\u6216\u88ab\u522a\u9664\u6642\uff0c\u6240\u6709\u8acb\u6c42\u5c07\u76f4\u63a5\u8a2a\u554f\u5f8c\u7aef\u6578\u64da\u5eab\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u5eab\u77ac\u9593\u627f\u53d7\u5927\u91cf\u8acb\u6c42\u3002<\/li>\n<li><strong>\u4e0d\u5747\u8861\u7684\u8acb\u6c42\u5206\u4f48\uff1a<\/strong>\u5982\u679c\u67d0\u4e9b\u8acb\u6c42\u7684\u983b\u7387\u9060\u9ad8\u65bc\u5176\u4ed6\u8acb\u6c42\uff0c\u9019\u6703\u5c0e\u81f4\u7279\u5b9a\u7684\u6578\u64da\u5eab\u67e5\u8a62\u904e\u8f09\u3002<\/li>\n<li><strong>\u7cfb\u7d71\u8cc7\u6e90\u4e0d\u8db3\uff1a<\/strong>\u7576Redis\u6216\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u8cc7\u6e90\uff08\u5982CPU\u3001\u5167\u5b58\uff09\u4e0d\u8db3\u6642\uff0c\u7cfb\u7d71\u7684\u97ff\u61c9\u6642\u9593\u6703\u986f\u8457\u589e\u52a0\uff0c\u9032\u800c\u5f71\u97ff\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%87%89%e5%b0%8dredis%e9%9b%aa%e5%b4%a9-KNexUVqTCO\">\u5982\u4f55\u61c9\u5c0dRedis\u96ea\u5d29<\/h2>\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-KNexUVqTCO\">1. \u8a2d\u7f6e\u5408\u7406\u7684\u7de9\u5b58\u904e\u671f\u6642\u9593<\/h3>\n<p>\u70ba\u4e86\u6e1b\u5c11\u7de9\u5b58\u5931\u6548\u5e36\u4f86\u7684\u5f71\u97ff\uff0c\u53ef\u4ee5\u6839\u64da\u6578\u64da\u7684\u4f7f\u7528\u983b\u7387\u8a2d\u7f6e\u4e0d\u540c\u7684\u904e\u671f\u6642\u9593\u3002\u5c0d\u65bc\u71b1\u6578\u64da\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u8f03\u9577\u7684\u904e\u671f\u6642\u9593\uff0c\u800c\u5c0d\u65bc\u51b7\u6578\u64da\u5247\u53ef\u4ee5\u8a2d\u7f6e\u8f03\u77ed\u7684\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5927\u91cf\u8acb\u6c42\u540c\u6642\u5931\u6548\u7684\u60c5\u6cc1\u3002<\/p>\n<h3 id=\"2-%e5%af%a6%e6%96%bd%e7%b7%a9%e5%ad%98%e9%a0%90%e7%86%b1-KNexUVqTCO\">2. \u5be6\u65bd\u7de9\u5b58\u9810\u71b1<\/h3>\n<p>\u5728\u7cfb\u7d71\u555f\u52d5\u6216\u6d41\u91cf\u9ad8\u5cf0\u671f\u4e4b\u524d\uff0c\u53ef\u4ee5\u63d0\u524d\u5c07\u71b1\u6578\u64da\u52a0\u8f09\u5230Redis\u4e2d\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u521d\u59cb\u8acb\u6c42\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u58d3\u529b\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e4%ba%92%e6%96%a5%e9%8e%96-KNexUVqTCO\">3. \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\u63a7\u5236\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u8a2a\u554f\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u67d0\u4e00\u6642\u523b\u53ea\u6709\u4e00\u500b\u8acb\u6c42\u80fd\u5920\u8a2a\u554f\u6578\u64da\u5eab\uff0c\u5f9e\u800c\u6e1b\u5c11\u8acb\u6c42\u7684\u885d\u7a81\u548c\u6578\u64da\u5eab\u7684\u8ca0\u8f09\u3002<\/p>\n<pre><code>\n# \u4f7f\u7528Redis\u7684SETNX\u547d\u4ee4\u5be6\u73fe\u4e92\u65a5\u9396\ndef get_data(key):\n    lock_key = f\"lock:{key}\"\n    if redis_client.setnx(lock_key, 1):\n        try:\n            # \u5f9e\u6578\u64da\u5eab\u7372\u53d6\u6578\u64da\n            data = fetch_from_db(key)\n            redis_client.set(key, data)\n            return data\n        finally:\n            redis_client.delete(lock_key)\n    else:\n        # \u7b49\u5f85\u9396\u91cb\u653e\n        time.sleep(0.1)\n        return get_data(key)\n<\/code><\/pre>\n<h3 id=\"4-%e9%99%90%e6%b5%81%e7%ad%96%e7%95%a5-KNexUVqTCO\">4. \u9650\u6d41\u7b56\u7565<\/h3>\n<p>\u901a\u904e\u5be6\u65bd\u9650\u6d41\u7b56\u7565\uff0c\u53ef\u4ee5\u63a7\u5236\u8acb\u6c42\u7684\u6578\u91cf\uff0c\u907f\u514d\u77ac\u9593\u5927\u91cf\u8acb\u6c42\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u9020\u6210\u7684\u58d3\u529b\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee4\u724c\u6876\u6216\u6f0f\u6876\u7b97\u6cd5\u4f86\u5be6\u73fe\u9650\u6d41\u3002<\/p>\n<h3 id=\"5-%e7%9b%a3%e6%8e%a7%e5%92%8c%e9%a0%90%e8%ad%a6-KNexUVqTCO\">5. \u76e3\u63a7\u548c\u9810\u8b66<\/h3>\n<p>\u5efa\u7acb\u5b8c\u5584\u7684\u76e3\u63a7\u7cfb\u7d71\uff0c\u53ca\u6642\u767c\u73feRedis\u548c\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u6027\u80fd\u74f6\u9838\uff0c\u4e26\u8a2d\u7f6e\u9810\u8b66\u6a5f\u5236\uff0c\u53ca\u6642\u97ff\u61c9\u6f5b\u5728\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KNexUVqTCO\">\u7e3d\u7d50<\/h2>\n<p>Redis\u96ea\u5d29\u662f\u4e00\u500b\u9700\u8981\u91cd\u8996\u7684\u554f\u984c\uff0c\u901a\u904e\u5408\u7406\u7684\u7de9\u5b58\u7b56\u7565\u3001\u4e92\u65a5\u9396\u3001\u9650\u6d41\u548c\u76e3\u63a7\u7b49\u624b\u6bb5\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u5176\u5c0d\u7cfb\u7d71\u6027\u80fd\u7684\u5f71\u97ff\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u9ad8\u6027\u80fd\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u4e86\u89e3\u5982\u4f55\u61c9\u5c0dRedis\u96ea\u5d29\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728\u7d05\u8272\u5929\u7a7a\u4e0b\u61c9\u5c0dRedis\u96ea\u5d29\uff0c\u638c\u63e1\u6709\u6548\u7b56\u7565\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u548c\u6578\u64da\u5b89\u5168\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-194391","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194391","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=194391"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194391\/revisions"}],"predecessor-version":[{"id":194392,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194391\/revisions\/194392"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194391"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194391"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194391"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}