{"id":188226,"date":"2024-11-11T20:53:21","date_gmt":"2024-11-11T12:53:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/188226\/"},"modified":"2024-11-11T20:53:22","modified_gmt":"2024-11-11T12:53:22","slug":"%e9%8e%96redis%e5%af%a6%e7%8f%be%e9%ab%98%e4%b8%a6%e7%99%bc%e7%9a%84%e8%b6%85%e6%99%82%e9%8e%96%e7%ad%96%e7%95%a5%ef%bc%88redis%e9%ab%98%e4%b8%a6%e7%99%bc%e9%81%8e%e6%9c%9f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/188226\/","title":{"rendered":"\u9396Redis\u5be6\u73fe\u9ad8\u4e26\u767c\u7684\u8d85\u6642\u9396\u7b56\u7565\uff08redis\u9ad8\u4e26\u767c\u904e\u671f\uff09"},"content":{"rendered":"<h1 id=\"%e9%8e%96redis%e5%af%a6%e7%8f%be%e9%ab%98%e4%b8%a6%e7%99%bc%e7%9a%84%e8%b6%85%e6%99%82%e9%8e%96%e7%ad%96%e7%95%a5%ef%bc%88redis%e9%ab%98%e4%b8%a6%e7%99%bc%e9%81%8e%e6%9c%9f%ef%bc%89-ACzylJkELG\">\u9396Redis\u5be6\u73fe\u9ad8\u4e26\u767c\u7684\u8d85\u6642\u9396\u7b56\u7565\uff08redis\u9ad8\u4e26\u767c\u904e\u671f\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6e90\u548c\u63a7\u5236\u4e26\u767c\u8a2a\u554f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5e38\u88ab\u7528\u65bc\u5be6\u73fe\u9396\u6a5f\u5236\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u3002\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9ad8\u4e26\u767c\u7684\u8d85\u6642\u9396\u7b56\u7565\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-ACzylJkELG\">\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\u6210\u529f\u8a2a\u554f\u8a72\u8cc7\u6e90\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u548c\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e9%ab%98%e4%b8%a6%e7%99%bc%e7%92%b0%e5%a2%83%e4%b8%8b%e7%9a%84%e6%8c%91%e6%88%b0-ACzylJkELG\">\u9ad8\u4e26\u767c\u74b0\u5883\u4e0b\u7684\u6311\u6230<\/h2>\n<p>\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\uff0c\u9396\u7684\u7ba1\u7406\u8b8a\u5f97\u66f4\u52a0\u8907\u96dc\u3002\u4e3b\u8981\u6311\u6230\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6b7b\u9396\uff1a<\/strong>\u5982\u679c\u5169\u500b\u6216\u591a\u500b\u5ba2\u6236\u7aef\u4e92\u76f8\u7b49\u5f85\u5c0d\u65b9\u91cb\u653e\u9396\uff0c\u5c07\u5c0e\u81f4\u6b7b\u9396\u3002<\/li>\n<li><strong>\u9396\u8d85\u6642\uff1a<\/strong>\u5982\u679c\u9396\u6301\u6709\u6642\u9593\u904e\u9577\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u7cfb\u7d71\u7684\u6027\u80fd\u3002<\/li>\n<li><strong>\u9396\u7684\u516c\u5e73\u6027\uff1a<\/strong>\u5728\u9ad8\u4e26\u767c\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u78ba\u4fdd\u9396\u7684\u516c\u5e73\u6027\uff0c\u907f\u514d\u67d0\u4e9b\u5ba2\u6236\u7aef\u9577\u6642\u9593\u7121\u6cd5\u7372\u5f97\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e7%9a%84%e8%b6%85%e6%99%82%e9%8e%96%e7%ad%96%e7%95%a5-ACzylJkELG\">Redis\u7684\u8d85\u6642\u9396\u7b56\u7565<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7a\u4e0a\u8ff0\u6311\u6230\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u8d85\u6642\u9396\u7b56\u7565\u3002\u9019\u7a2e\u7b56\u7565\u7684\u57fa\u672c\u601d\u60f3\u662f\u70ba\u9396\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u7576\u9396\u8d85\u904e\u9019\u500b\u6642\u9593\u5f8c\uff0c\u81ea\u52d5\u91cb\u653e\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u907f\u514d\u6b7b\u9396\u7684\u60c5\u6cc1\u3002<\/p>\n<h3 id=\"%e5%af%a6%e7%8f%be%e8%b6%85%e6%99%82%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-ACzylJkELG\">\u5be6\u73fe\u8d85\u6642\u9396\u7684\u57fa\u672c\u6b65\u9a5f<\/h3>\n<ol>\n<li>\u4f7f\u7528SETNX\u547d\u4ee4\u5617\u8a66\u7372\u53d6\u9396\u3002<\/li>\n<li>\u5982\u679c\u7372\u53d6\u6210\u529f\uff0c\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u5728\u64cd\u4f5c\u5b8c\u6210\u5f8c\uff0c\u91cb\u653e\u9396\u3002<\/li>\n<li>\u5982\u679c\u7372\u53d6\u5931\u6557\uff0c\u5247\u6aa2\u67e5\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u6839\u64da\u9700\u8981\u91cd\u8a66\u3002<\/li>\n<\/ol>\n<h3 id=\"%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-ACzylJkELG\">\u4ee3\u78bc\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u5be6\u73fe\u8d85\u6642\u9396\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>import redis\nimport time\n\n# \u9023\u63a5\u5230Redis\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\ndef acquire_lock(lock_name, acquire_time=10, lock_timeout=10):\n    identifier = str(uuid.uuid4())\n    end = time.time() + acquire_time\n    while time.time() &lt; end:\n        if r.set(lock_name, identifier, nx=True, ex=lock_timeout):\n            return identifier\n        time.sleep(0.001)  # \u7b49\u5f85\u4e00\u6bb5\u6642\u9593\u518d\u91cd\u8a66\n    return False\n\ndef release_lock(lock_name, identifier):\n    pipe = r.pipeline(True)\n    while True:\n        try:\n            pipe.watch(lock_name)\n            if pipe.get(lock_name) == identifier:\n                pipe.multi()\n                pipe.delete(lock_name)\n                pipe.execute()\n                return True\n            pipe.unwatch()\n            break\n        except redis.WatchError:\n            pass\n    return False\n\n# \u4f7f\u7528\u9396\nlock_id = acquire_lock(\"my_lock\")\nif lock_id:\n    try:\n        # \u57f7\u884c\u9700\u8981\u9396\u5b9a\u7684\u64cd\u4f5c\n        pass\n    finally:\n        release_lock(\"my_lock\", lock_id)\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-ACzylJkELG\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0c\u4f7f\u7528Redis\u5be6\u73fe\u8d85\u6642\u9396\u7b56\u7565\u662f\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u53ef\u4ee5\u6709\u6548\u907f\u514d\u6b7b\u9396\u548c\u8cc7\u6e90\u7af6\u722d\u7684\u554f\u984c\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u7c21\u55ae\u6613\u7528\uff0c\u9084\u80fd\u5920\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u8cc7\u6e90\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9ad8\u4e26\u767c\u7684\u8d85\u6642\u9396\u7b56\u7565\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u4e26\u6709\u6548\u7ba1\u7406\u8cc7\u6e90\u904e\u671f\u554f\u984c\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-188226","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188226","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=188226"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188226\/revisions"}],"predecessor-version":[{"id":188227,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188226\/revisions\/188227"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=188226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=188226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=188226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}