{"id":129403,"date":"2024-10-26T21:21:21","date_gmt":"2024-10-26T13:21:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129403\/"},"modified":"2024-10-26T21:21:22","modified_gmt":"2024-10-26T13:21:22","slug":"redis%e9%8e%96%e5%a4%b1%e6%95%88%e6%99%82%e9%96%93%e6%80%8e%e6%a8%a3%e6%8a%8a%e6%8f%a1%ef%bc%88redis%e9%8e%96%e7%9a%84%e5%a4%b1%e6%95%88%e6%99%82%e9%96%93%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129403\/","title":{"rendered":"Redis\u9396\u5931\u6548\u6642\u9593\u600e\u6a23\u628a\u63e1\uff08redis\u9396\u7684\u5931\u6548\u6642\u9593\uff09"},"content":{"rendered":"<h1 id=\"redis%e9%8e%96%e5%a4%b1%e6%95%88%e6%99%82%e9%96%93%e6%80%8e%e6%a8%a3%e6%8a%8a%e6%8f%a1%ef%bc%88redis%e9%8e%96%e7%9a%84%e5%a4%b1%e6%95%88%e6%99%82%e9%96%93%ef%bc%89-KUqRMNMAyv\">Redis\u9396\u5931\u6548\u6642\u9593\u600e\u6a23\u628a\u63e1\uff08redis\u9396\u7684\u5931\u6548\u6642\u9593\uff09<\/h1>\n<p>\u5728\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\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u7c21\u55ae\u800c\u5f37\u5927\u7684\u9396\u6a5f\u5236\u3002\u7136\u800c\uff0c\u5982\u4f55\u5408\u7406\u5730\u8a2d\u7f6eRedis\u9396\u7684\u5931\u6548\u6642\u9593\uff0c\u537b\u662f\u4e00\u500b\u503c\u5f97\u6df1\u5165\u63a2\u8a0e\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%8e%96%ef%bc%9f-KUqRMNMAyv\">\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\u5b83\u901a\u5e38\u7528\u65bc\u9632\u6b62\u591a\u500b\u9032\u7a0b\u540c\u6642\u4fee\u6539\u540c\u4e00\u6578\u64da\uff0c\u5f9e\u800c\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002Redis\u9396\u7684\u5be6\u73fe\u901a\u5e38\u57fa\u65bcSETNX\u547d\u4ee4\uff0c\u9019\u662f\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\uff0c\u80fd\u5920\u78ba\u4fdd\u53ea\u6709\u4e00\u500b\u5ba2\u6236\u7aef\u80fd\u5920\u7372\u5f97\u9396\u3002<\/p>\n<h2 id=\"%e5%a4%b1%e6%95%88%e6%99%82%e9%96%93%e7%9a%84%e6%84%8f%e7%be%a9-KUqRMNMAyv\">\u5931\u6548\u6642\u9593\u7684\u610f\u7fa9<\/h2>\n<p>\u9396\u7684\u5931\u6548\u6642\u9593\u662f\u6307\u9396\u5728Redis\u4e2d\u4fdd\u6301\u7684\u6642\u9593\u3002\u5982\u679c\u5728\u9019\u6bb5\u6642\u9593\u5167\uff0c\u6301\u6709\u9396\u7684\u5ba2\u6236\u7aef\u6c92\u6709\u91cb\u653e\u9396\uff0c\u5247\u9396\u6703\u81ea\u52d5\u5931\u6548\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u53ef\u4ee5\u9632\u6b62\u56e0\u70ba\u5ba2\u6236\u7aef\u5d29\u6f70\u6216\u7db2\u7d61\u554f\u984c\u800c\u5c0e\u81f4\u9396\u6c38\u9060\u7121\u6cd5\u91cb\u653e\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a8%ad%e7%bd%ae%e5%a4%b1%e6%95%88%e6%99%82%e9%96%93-KUqRMNMAyv\">\u5982\u4f55\u8a2d\u7f6e\u5931\u6548\u6642\u9593<\/h2>\n<p>\u8a2d\u7f6e\u5931\u6548\u6642\u9593\u6642\uff0c\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u696d\u52d9\u908f\u8f2f\u7684\u57f7\u884c\u6642\u9593\uff1a<\/strong>\u6839\u64da\u696d\u52d9\u908f\u8f2f\u7684\u57f7\u884c\u6642\u9593\u4f86\u8a2d\u7f6e\u5931\u6548\u6642\u9593\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5982\u679c\u696d\u52d9\u908f\u8f2f\u7684\u57f7\u884c\u6642\u9593\u904e\u9577\uff0c\u5247\u9700\u8981\u9069\u7576\u5ef6\u9577\u9396\u7684\u5931\u6548\u6642\u9593\u3002<\/li>\n<li><strong>\u91cd\u8a66\u6a5f\u5236\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6301\u6709\u9396\u7684\u5ba2\u6236\u7aef\u53ef\u80fd\u6703\u56e0\u70ba\u67d0\u4e9b\u539f\u56e0\u7121\u6cd5\u5b8c\u6210\u64cd\u4f5c\u3002\u9019\u6642\uff0c\u8a2d\u7f6e\u5408\u7406\u7684\u91cd\u8a66\u6a5f\u5236\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/li>\n<li><strong>\u7cfb\u7d71\u7684\u53ef\u7528\u6027\uff1a<\/strong>\u5982\u679c\u7cfb\u7d71\u9700\u8981\u9ad8\u53ef\u7528\u6027\uff0c\u5247\u61c9\u8a72\u8003\u616e\u8a2d\u7f6e\u8f03\u77ed\u7684\u5931\u6548\u6642\u9593\uff0c\u4ee5\u4fbf\u5728\u51fa\u73fe\u554f\u984c\u6642\u80fd\u5920\u5feb\u901f\u91cb\u653e\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-KUqRMNMAyv\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u5be6\u73fe\u9396\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nimport 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())\n    end = time.time() + acquire_time\n    while time.time() &lt; end:\n        if r.set(lock_name, identifier, nx=True, ex=lock_time):\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<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c<code>acquire_lock<\/code>\u51fd\u6578\u7528\u65bc\u7372\u53d6\u9396\uff0c\u4e26\u8a2d\u7f6e\u4e86\u9396\u7684\u5931\u6548\u6642\u9593\uff1b<code>release_lock<\/code>\u51fd\u6578\u5247\u7528\u65bc\u91cb\u653e\u9396\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-KUqRMNMAyv\">\u7d50\u8ad6<\/h2>\n<p>\u5408\u7406\u5730\u8a2d\u7f6eRedis\u9396\u7684\u5931\u6548\u6642\u9593\u5c0d\u65bc\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u8003\u616e\u696d\u52d9\u908f\u8f2f\u7684\u57f7\u884c\u6642\u9593\u3001\u91cd\u8a66\u6a5f\u5236\u548c\u7cfb\u7d71\u7684\u53ef\u7528\u6027\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u9396\u7684\u5931\u6548\u6642\u9593\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u4f7f\u7528Redis\u9396\u6709\u66f4\u591a\u7684\u7591\u554f\uff0c\u6216\u8005\u9700\u8981\u9032\u4e00\u6b65\u7684\u6280\u8853\u652f\u6301\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\u3002\u6211\u5011\u63d0\u4f9b\u5404\u7a2e<em><a href=\"https:\/\/server.hk\">VPS<\/a><\/em>\u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u69cb\u5efa\u7a69\u5b9a\u53ef\u9760\u7684\u61c9\u7528\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5408\u7406\u8a2d\u7f6eRedis\u9396\u7684\u5931\u6548\u6642\u9593\uff0c\u4ee5\u63d0\u9ad8\u7cfb\u7d71\u7a69\u5b9a\u6027\u548c\u6027\u80fd\uff0c\u907f\u514d\u9396\u7af6\u722d\u548c\u6b7b\u9396\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-129403","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129403","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=129403"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129403\/revisions"}],"predecessor-version":[{"id":129404,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129403\/revisions\/129404"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}