{"id":183338,"date":"2024-11-10T03:59:21","date_gmt":"2024-11-09T19:59:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183338\/"},"modified":"2024-11-10T03:59:22","modified_gmt":"2024-11-09T19:59:22","slug":"%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba%e7%9a%84%e5%88%a9%e5%99%a8%e5%9f%ba%e6%96%bcredis%e7%9a%84%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96%ef%bc%88redis%e9%8e%96%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183338\/","title":{"rendered":"\u5be6\u73fe\u79d2\u6bba\u7684\u5229\u5668\u57fa\u65bcRedis\u7684\u5206\u4f48\u5f0f\u9396\uff08redis\u9396\u5be6\u73fe\u79d2\u6bba\uff09"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba%e7%9a%84%e5%88%a9%e5%99%a8%ef%bc%9a%e5%9f%ba%e6%96%bcredis%e7%9a%84%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96-eYSzhEpwej\">\u5be6\u73fe\u79d2\u6bba\u7684\u5229\u5668\uff1a\u57fa\u65bcRedis\u7684\u5206\u4f48\u5f0f\u9396<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u96fb\u5b50\u5546\u52d9\u74b0\u5883\u4e2d\uff0c\u79d2\u6bba\u6d3b\u52d5\u5df2\u6210\u70ba\u5438\u5f15\u9867\u5ba2\u7684\u91cd\u8981\u624b\u6bb5\u3002\u7136\u800c\uff0c\u96a8\u8457\u53c3\u8207\u8005\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u79d2\u6bba\u6d3b\u52d5\u4e2d\u7684\u8cc7\u6e90\u7af6\u722d\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\uff0c\u8a31\u591a\u958b\u767c\u8005\u9078\u64c7\u4f7f\u7528Redis\u7684\u5206\u4f48\u5f0f\u9396\u4f86\u78ba\u4fdd\u5728\u9ad8\u4f75\u767c\u60c5\u6cc1\u4e0b\u7684\u6578\u64da\u4e00\u81f4\u6027\u548c\u8cc7\u6e90\u7684\u6b63\u78ba\u5206\u914d\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e5%88%86%e4%bd%88%e5%bc%8f%e9%8e%96%ef%bc%9f-eYSzhEpwej\">\u4ec0\u9ebc\u662fRedis\u5206\u4f48\u5f0f\u9396\uff1f<\/h2>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u548c\u6578\u64da\u5b58\u5132\u3002\u5206\u4f48\u5f0f\u9396\u5247\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u591a\u500b\u9032\u7a0b\u6216\u670d\u52d9\u4e4b\u9593\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u901a\u904e\u4f7f\u7528Redis\u7684SETNX\u547d\u4ee4\uff0c\u53ef\u4ee5\u5be6\u73fe\u4e00\u500b\u7c21\u55ae\u7684\u5206\u4f48\u5f0f\u9396\u3002\u7576\u4e00\u500b\u9032\u7a0b\u7372\u5f97\u9396\u6642\uff0c\u5176\u4ed6\u9032\u7a0b\u5c07\u7121\u6cd5\u7372\u5f97\u8a72\u9396\uff0c\u5f9e\u800c\u907f\u514d\u4e86\u8cc7\u6e90\u7684\u7af6\u722d\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e5%8e%9f%e7%90%86-eYSzhEpwej\">Redis\u9396\u7684\u5be6\u73fe\u539f\u7406<\/h2>\n<p>Redis\u9396\u7684\u57fa\u672c\u539f\u7406\u662f\u5229\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u5be6\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002\u4ee5\u4e0b\u662f\u5be6\u73feRedis\u9396\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528SETNX\u547d\u4ee4\u5617\u8a66\u7372\u53d6\u9396\u3002\u5982\u679c\u8fd4\u56de\u503c\u70ba1\uff0c\u5247\u8868\u793a\u9396\u7372\u53d6\u6210\u529f\uff1b\u5982\u679c\u8fd4\u56de\u503c\u70ba0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\u3002<\/li>\n<li>\u5982\u679c\u7372\u53d6\u9396\u6210\u529f\uff0c\u5247\u53ef\u4ee5\u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u64cd\u4f5c\u3002<\/li>\n<li>\u64cd\u4f5c\u5b8c\u6210\u5f8c\uff0c\u4f7f\u7528DEL\u547d\u4ee4\u91cb\u653e\u9396\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-eYSzhEpwej\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\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):\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=acquire_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\n# \u4f7f\u7528\u793a\u4f8b\nlock_name = \"my_lock\"\nidentifier = acquire_lock(lock_name)\nif identifier:\n    try:\n        # \u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u64cd\u4f5c\n        print(\"\u7372\u53d6\u9396\u6210\u529f\uff0c\u57f7\u884c\u64cd\u4f5c\")\n    finally:\n        release_lock(lock_name, identifier)\nelse:\n    print(\"\u7372\u53d6\u9396\u5931\u6557\")\n<\/code><\/pre>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%84%aa%e5%8b%a2-eYSzhEpwej\">Redis\u9396\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis\u7684\u64cd\u4f5c\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u80fd\u5920\u652f\u6301\u9ad8\u4f75\u767c\u7684\u8acb\u6c42\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>\u4f7f\u7528Redis\u7684API\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u7684\u529f\u80fd\u3002<\/li>\n<li><strong>\u53ef\u64f4\u5c55\u6027\uff1a<\/strong>Redis\u652f\u6301\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u8a2a\u554f\uff0c\u9069\u5408\u5927\u898f\u6a21\u7684\u61c9\u7528\u5834\u666f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-eYSzhEpwej\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u5206\u4f48\u5f0f\u9396\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u9396\u7684\u904e\u671f\u6642\u9593\u61c9\u6839\u64da\u5be6\u969b\u696d\u52d9\u9700\u6c42\u8a2d\u7f6e\uff0c\u907f\u514d\u56e0\u70ba\u904e\u671f\u5c0e\u81f4\u7684\u9396\u91cb\u653e\u554f\u984c\u3002<\/li>\n<li>\u5728\u91cb\u653e\u9396\u6642\uff0c\u5fc5\u9808\u78ba\u8a8d\u7576\u524d\u9032\u7a0b\u662f\u9396\u7684\u64c1\u6709\u8005\uff0c\u4ee5\u907f\u514d\u8aa4\u91cb\u653e\u3002<\/li>\n<li>\u8003\u616e\u5230\u7db2\u7d61\u5ef6\u9072\u548cRedis\u7684\u53ef\u7528\u6027\uff0c\u61c9\u8a2d\u8a08\u5408\u7406\u7684\u91cd\u8a66\u6a5f\u5236\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-eYSzhEpwej\">\u7e3d\u7d50<\/h2>\n<p>\u57fa\u65bcRedis\u7684\u5206\u4f48\u5f0f\u9396\u70ba\u79d2\u6bba\u6d3b\u52d5\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u5728\u9ad8\u4f75\u767c\u7684\u60c5\u6cc1\u4e0b\u4fdd\u8b49\u8cc7\u6e90\u7684\u6b63\u78ba\u5206\u914d\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5229\u7528Redis\u7684\u9ad8\u6027\u80fd\u7279\u6027\u4f86\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u7528\u6236\u9ad4\u9a57\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u57fa\u65bcRedis\u7684\u5206\u4f48\u5f0f\u9396\u5982\u4f55\u5be6\u73fe\u79d2\u6bba\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\uff0c\u78ba\u4fdd\u9ad8\u6548\u7684\u8cc7\u6e90\u7ba1\u7406\u8207\u7af6\u722d\u63a7\u5236\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-183338","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183338","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=183338"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183338\/revisions"}],"predecessor-version":[{"id":183339,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183338\/revisions\/183339"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}