{"id":165407,"date":"2024-11-05T12:13:44","date_gmt":"2024-11-05T04:13:44","guid":{"rendered":"https:\/\/server.hk\/cnblog\/165407\/"},"modified":"2024-11-05T12:13:44","modified_gmt":"2024-11-05T04:13:44","slug":"%e6%8e%a7%e5%88%b6redis%e9%8e%96%e5%a6%82%e4%bd%95%e8%a8%ad%e7%bd%ae%e8%a7%a3%e6%b1%ba%e4%b8%a6%e7%99%bc%e5%95%8f%e9%a1%8c%ef%bc%88redis%e9%8e%96%e6%80%8e%e9%ba%bc%e8%a8%ad%e7%bd%ae%e4%b8%a6%e7%99%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/165407\/","title":{"rendered":"\u63a7\u5236Redis\u9396\u5982\u4f55\u8a2d\u7f6e\u89e3\u6c7a\u4e26\u767c\u554f\u984c\uff08redis\u9396\u600e\u9ebc\u8a2d\u7f6e\u4e26\u767c\uff09"},"content":{"rendered":"<h1 id=\"%e6%8e%a7%e5%88%b6redis%e9%8e%96%e5%a6%82%e4%bd%95%e8%a8%ad%e7%bd%ae%e8%a7%a3%e6%b1%ba%e4%b8%a6%e7%99%bc%e5%95%8f%e9%a1%8c-xMzglefHxh\">\u63a7\u5236Redis\u9396\u5982\u4f55\u8a2d\u7f6e\u89e3\u6c7a\u4e26\u767c\u554f\u984c<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u4e26\u767c\u554f\u984c\u662f\u958b\u767c\u8005\u7d93\u5e38\u9762\u81e8\u7684\u6311\u6230\u4e4b\u4e00\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\u4f86\u8655\u7406\u4e26\u767c\u554f\u984c\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u4f7f\u7528\u9396\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Redis\u4e2d\u8a2d\u7f6e\u9396\u4ee5\u89e3\u6c7a\u4e26\u767c\u554f\u984c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%8e%96%ef%bc%9f-xMzglefHxh\">\u4ec0\u9ebc\u662fRedis\u9396\uff1f<\/h2>\n<p>Redis\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u7576\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u5617\u8a66\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u9396\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u4e00\u500b\u5ba2\u6236\u7aef\u80fd\u5920\u5728\u7279\u5b9a\u6642\u9593\u5167\u8a2a\u554f\u8a72\u8cc7\u6e90\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u4e0d\u4e00\u81f4\u548c\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-xMzglefHxh\">Redis\u9396\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>Redis\u9396\u7684\u57fa\u672c\u539f\u7406\u662f\u4f7f\u7528SETNX\u547d\u4ee4\uff08Set if Not eXists\uff09\u4f86\u5275\u5efa\u9396\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u60f3\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u5617\u8a66\u8a2d\u7f6e\u4e00\u500b\u9375\uff0c\u53ea\u6709\u7576\u8a72\u9375\u4e0d\u5b58\u5728\u6642\uff0c\u8a2d\u7f6e\u624d\u6703\u6210\u529f\u3002\u9019\u6a23\uff0c\u5176\u4ed6\u5ba2\u6236\u7aef\u5728\u8a72\u9375\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u5c31\u7121\u6cd5\u7372\u53d6\u9396\u3002<\/p>\n<h3 id=\"%e8%a8%ad%e7%bd%aeredis%e9%8e%96%e7%9a%84%e6%ad%a5%e9%a9%9f-xMzglefHxh\">\u8a2d\u7f6eRedis\u9396\u7684\u6b65\u9a5f<\/h3>\n<ol>\n<li><strong>\u7372\u53d6\u9396\uff1a<\/strong>\u4f7f\u7528SETNX\u547d\u4ee4\u8a2d\u7f6e\u9396\u9375\u3002<\/li>\n<li><strong>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\uff0c\u61c9\u8a72\u70ba\u9396\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u3002<\/li>\n<li><strong>\u91cb\u653e\u9396\uff1a<\/strong>\u5728\u5b8c\u6210\u64cd\u4f5c\u5f8c\uff0c\u522a\u9664\u9396\u9375\u3002<\/li>\n<\/ol>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e7%a4%ba%e4%be%8b-xMzglefHxh\">Redis\u9396\u7684\u5be6\u73fe\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u9396\u7684\u7c21\u55ae\u793a\u4f8b\uff0c\u4f7f\u7528Python\u8a9e\u8a00\u548credis-py\u5eab\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>import redis\nimport time\n\n# \u9023\u63a5\u5230Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\ndef acquire_lock(lock_name, acquire_time=10):\n    identifier = str(uuid.uuid4())\n    lock_key = f\"lock:{lock_name}\"\n    \n    # \u5617\u8a66\u7372\u53d6\u9396\n    if r.setnx(lock_key, identifier):\n        # \u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\n        r.expire(lock_key, acquire_time)\n        return identifier\n    return False\n\ndef release_lock(lock_name, identifier):\n    lock_key = f\"lock:{lock_name}\"\n    # \u78ba\u4fdd\u53ea\u6709\u6301\u6709\u9396\u7684\u5ba2\u6236\u7aef\u624d\u80fd\u91cb\u653e\u9396\n    if r.get(lock_key) == identifier:\n        r.delete(lock_key)\n\n# \u4f7f\u7528\u9396\nlock_name = \"my_resource\"\nidentifier = acquire_lock(lock_name)\n\nif identifier:\n    try:\n        # \u57f7\u884c\u9700\u8981\u9396\u5b9a\u7684\u64cd\u4f5c\n        print(\"\u7372\u53d6\u9396\u6210\u529f\uff0c\u57f7\u884c\u64cd\u4f5c...\")\n        time.sleep(5)  # \u6a21\u64ec\u64cd\u4f5c\n    finally:\n        release_lock(lock_name, identifier)\n        print(\"\u91cb\u653e\u9396\u6210\u529f\")\nelse:\n    print(\"\u7372\u53d6\u9396\u5931\u6557\")\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-xMzglefHxh\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u9396\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u904e\u671f\u6642\u9593\uff1a<\/strong>\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u3002<\/li>\n<li><strong>\u9396\u7684\u552f\u4e00\u6027\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u9396\u7684\u552f\u4e00\u6027\uff0c\u4ee5\u907f\u514d\u4e0d\u540c\u8cc7\u6e90\u4e4b\u9593\u7684\u9396\u885d\u7a81\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u7372\u53d6\u9396\u6216\u91cb\u653e\u9396\u6642\uff0c\u61c9\u8a72\u8003\u616e\u5230\u53ef\u80fd\u7684\u932f\u8aa4\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-xMzglefHxh\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Redis\u9396\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u4e26\u767c\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u901a\u904e\u5408\u7406\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u548c\u552f\u4e00\u6027\uff0c\u53ef\u4ee5\u907f\u514d\u6b7b\u9396\u548c\u8cc7\u6e90\u885d\u7a81\u7684\u60c5\u6cc1\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u8655\u7406\u4e26\u767c\u8acb\u6c42\u7684\u61c9\u7528\uff0cRedis\u9396\u662f\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684Redis\u670d\u52d9\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u8a2d\u7f6eRedis\u9396\u4ee5\u89e3\u6c7a\u4e26\u767c\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u64cd\u4f5c\u5b89\u5168\u6027\uff0c\u63d0\u5347\u7cfb\u7d71\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-165407","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165407","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=165407"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165407\/revisions"}],"predecessor-version":[{"id":165408,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165407\/revisions\/165408"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=165407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=165407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=165407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}