{"id":194873,"date":"2024-11-13T10:17:20","date_gmt":"2024-11-13T02:17:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194873\/"},"modified":"2024-11-13T10:17:21","modified_gmt":"2024-11-13T02:17:21","slug":"%e7%94%a8redis%e5%af%a6%e7%8f%be%e6%b0%b8%e4%b9%85%e6%9c%89%e6%95%88%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93%e9%8e%96%ef%bc%88redis%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194873\/","title":{"rendered":"\u7528Redis\u5be6\u73fe\u6c38\u4e45\u6709\u6548\u7684\u904e\u671f\u6642\u9593\u9396\uff08redis\u904e\u671f\u6642\u9593\u9396\uff09"},"content":{"rendered":"<h1 id=\"%e7%94%a8redis%e5%af%a6%e7%8f%be%e6%b0%b8%e4%b9%85%e6%9c%89%e6%95%88%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93%e9%8e%96%ef%bc%88redis%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93%e9%8e%96%ef%bc%89-CzPlHkHbZQ\">\u7528Redis\u5be6\u73fe\u6c38\u4e45\u6709\u6548\u7684\u904e\u671f\u6642\u9593\u9396\uff08redis\u904e\u671f\u6642\u9593\u9396\uff09<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u7ba1\u7406\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9632\u6b62\u7af6\u722d\u689d\u4ef6\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u904e\u671f\u6642\u9593\u9396\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u61c9\u7528\u5834\u666f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u6c38\u4e45\u6709\u6548\u7684\u904e\u671f\u6642\u9593\u9396\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93%e9%8e%96%ef%bc%9f-CzPlHkHbZQ\">\u4ec0\u9ebc\u662f\u904e\u671f\u6642\u9593\u9396\uff1f<\/h2>\n<p>\u904e\u671f\u6642\u9593\u9396\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u9396\u5b9a\u6a5f\u5236\uff0c\u5141\u8a31\u5728\u4e00\u5b9a\u6642\u9593\u5167\u7372\u53d6\u9396\u7684\u6b0a\u9650\uff0c\u4e26\u5728\u8d85\u904e\u8a72\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u9396\u3002\u9019\u7a2e\u6a5f\u5236\u5728\u8655\u7406\u9577\u6642\u9593\u904b\u884c\u7684\u4efb\u52d9\u6642\u7279\u5225\u6709\u7528\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u9632\u6b62\u56e0\u70ba\u67d0\u500b\u9032\u7a0b\u5d29\u6f70\u800c\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e9%8e%96%e5%af%a6%e7%8f%be-CzPlHkHbZQ\">Redis\u4e2d\u7684\u9396\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u8a2d\u7f6e\u9375\u7684\u904e\u671f\u6642\u9593\u4f86\u5be6\u73fe\u9396\u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe\u904e\u671f\u6642\u9593\u9396\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u5617\u8a66\u7372\u53d6\u9396\uff1a\u4f7f\u7528SETNX\u547d\u4ee4\u8a2d\u7f6e\u4e00\u500b\u9375\uff0c\u8868\u793a\u7372\u53d6\u9396\u3002<\/li>\n<li>\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff1a\u5982\u679c\u6210\u529f\u7372\u53d6\u9396\uff0c\u5247\u4f7f\u7528EXPIRE\u547d\u4ee4\u8a2d\u7f6e\u8a72\u9375\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u91cb\u653e\u9396\uff1a\u5728\u4efb\u52d9\u5b8c\u6210\u5f8c\uff0c\u522a\u9664\u8a72\u9375\u4ee5\u91cb\u653e\u9396\u3002<\/li>\n<\/ol>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-CzPlHkHbZQ\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u5be6\u73fe\u904e\u671f\u6642\u9593\u9396\u7684\u793a\u4f8b\u4ee3\u78bc\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_time=10):\n    identifier = str(uuid.uuid4())  # \u552f\u4e00\u6a19\u8b58\u7b26\n    lock_acquired = r.set(lock_name, identifier, nx=True, ex=lock_time)\n    \n    if lock_acquired:\n        return identifier\n    return False\n\ndef release_lock(lock_name, identifier):\n    # \u78ba\u4fdd\u53ea\u6709\u6301\u6709\u9396\u7684\u9032\u7a0b\u624d\u80fd\u91cb\u653e\u9396\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            continue\n    return False\n\n# \u4f7f\u7528\u793a\u4f8b\nlock_name = \"my_lock\"\nidentifier = acquire_lock(lock_name)\n\nif identifier:\n    try:\n        # \u57f7\u884c\u4efb\u52d9\n        time.sleep(5)  # \u6a21\u64ec\u9577\u6642\u9593\u904b\u884c\u7684\u4efb\u52d9\n    finally:\n        release_lock(lock_name, identifier)\nelse:\n    print(\"\u7121\u6cd5\u7372\u53d6\u9396\")\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-CzPlHkHbZQ\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u5be6\u73fe\u904e\u671f\u6642\u9593\u9396\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u61c9\u6839\u64da\u5be6\u969b\u696d\u52d9\u9700\u6c42\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u907f\u514d\u56e0\u70ba\u904e\u671f\u6642\u9593\u904e\u77ed\u800c\u5c0e\u81f4\u9396\u88ab\u63d0\u524d\u91cb\u653e\u3002<\/li>\n<li><strong>\u552f\u4e00\u6a19\u8b58\u7b26\uff1a<\/strong>\u4f7f\u7528\u552f\u4e00\u6a19\u8b58\u7b26\u4f86\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u9396\u7684\u9032\u7a0b\u624d\u80fd\u91cb\u653e\u9396\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u5176\u4ed6\u9032\u7a0b\u8aa4\u91cb\u653e\u9396\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u91cb\u653e\u9396\u7684\u904e\u7a0b\u4e2d\uff0c\u61c9\u8003\u616e\u5230\u53ef\u80fd\u7684\u932f\u8aa4\u60c5\u6cc1\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CzPlHkHbZQ\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Redis\u5be6\u73fe\u6c38\u4e45\u6709\u6548\u7684\u904e\u671f\u6642\u9593\u9396\u662f\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u7ba1\u7406\u9396\u7684\u4f7f\u7528\u3002\u901a\u904e\u5408\u7406\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u548c\u552f\u4e00\u6a19\u8b58\u7b26\uff0c\u53ef\u4ee5\u6709\u6548\u9632\u6b62\u7af6\u722d\u689d\u4ef6\u548c\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\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\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u6c38\u4e45\u6709\u6548\u7684\u904e\u671f\u6642\u9593\u9396\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u8cc7\u6e90\u7684\u6709\u6548\u63a7\u5236\u8207\u91cb\u653e\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-194873","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194873","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=194873"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194873\/revisions"}],"predecessor-version":[{"id":194874,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194873\/revisions\/194874"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}