{"id":128355,"date":"2024-10-26T13:33:19","date_gmt":"2024-10-26T05:33:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128355\/"},"modified":"2024-10-26T13:33:19","modified_gmt":"2024-10-26T05:33:19","slug":"redis-%e5%af%a6%e7%8f%be%e7%9a%84%e8%b7%a8%e9%80%b2%e7%a8%8b%e7%8b%80%e6%85%8b%e5%90%8c%e6%ad%a5%e9%8e%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128355\/","title":{"rendered":"Redis \u5be6\u73fe\u7684\u8de8\u9032\u7a0b\u72c0\u614b\u540c\u6b65\u9396"},"content":{"rendered":"<h1 id=\"redis-%e5%af%a6%e7%8f%be%e7%9a%84%e8%b7%a8%e9%80%b2%e7%a8%8b%e7%8b%80%e6%85%8b%e5%90%8c%e6%ad%a5%e9%8e%96-JfmhNZvyBk\">Redis \u5be6\u73fe\u7684\u8de8\u9032\u7a0b\u72c0\u614b\u540c\u6b65\u9396<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8de8\u9032\u7a0b\u7684\u72c0\u614b\u540c\u6b65\u662f\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u7576\u591a\u500b\u9032\u7a0b\u9700\u8981\u5171\u4eab\u8cc7\u6e90\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u9019\u4e9b\u8cc7\u6e90\u4ee5\u907f\u514d\u7af6\u722d\u689d\u4ef6\u548c\u6578\u64da\u4e0d\u4e00\u81f4\u6027\u6210\u70ba\u4e86\u958b\u767c\u8005\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6a5f\u5236\u4f86\u5be6\u73fe\u8de8\u9032\u7a0b\u7684\u72c0\u614b\u540c\u6b65\u9396\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528 Redis \u5be6\u73fe\u9019\u4e00\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%8b%80%e6%85%8b%e5%90%8c%e6%ad%a5%e9%8e%96%ef%bc%9f-JfmhNZvyBk\">\u4ec0\u9ebc\u662f\u72c0\u614b\u540c\u6b65\u9396\uff1f<\/h2>\n<p>\u72c0\u614b\u540c\u6b65\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u7576\u4e00\u500b\u9032\u7a0b\u7372\u5f97\u9396\u6642\uff0c\u5176\u4ed6\u9032\u7a0b\u5fc5\u9808\u7b49\u5f85\uff0c\u76f4\u5230\u8a72\u9032\u7a0b\u91cb\u653e\u9396\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u540c\u4e00\u6642\u9593\u53ea\u6709\u4e00\u500b\u9032\u7a0b\u80fd\u5920\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u6027\u548c\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87-redis%ef%bc%9f-JfmhNZvyBk\">\u70ba\u4ec0\u9ebc\u9078\u64c7 Redis\uff1f<\/h2>\n<p>Redis \u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>Redis \u7684\u64cd\u4f5c\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u80fd\u5920\u5728\u6beb\u79d2\u7d1a\u5225\u5167\u5b8c\u6210\u6578\u64da\u7684\u8b80\u53d6\u548c\u5beb\u5165\u3002<\/li>\n<li><strong>\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff1a<\/strong>\u9664\u4e86\u57fa\u672c\u7684\u9375\u503c\u5c0d\uff0cRedis \u9084\u652f\u6301\u5217\u8868\u3001\u96c6\u5408\u3001\u6709\u5e8f\u96c6\u5408\u7b49\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u8655\u7406\u8907\u96dc\u6578\u64da\u6642\u66f4\u52a0\u9748\u6d3b\u3002<\/li>\n<li><strong>\u5206\u4f48\u5f0f\u7279\u6027\uff1a<\/strong>Redis \u53ef\u4ee5\u8f15\u9b06\u5730\u5728\u591a\u500b\u4f3a\u670d\u5668\u4e4b\u9593\u9032\u884c\u6578\u64da\u5206\u7247\uff0c\u9019\u4f7f\u5f97\u5b83\u975e\u5e38\u9069\u5408\u7528\u65bc\u5206\u4f48\u5f0f\u7cfb\u7d71\u3002<\/li>\n<\/ul>\n<h2 id=\"redis-%e5%af%a6%e7%8f%be%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-JfmhNZvyBk\">Redis \u5be6\u73fe\u9396\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u55ae\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u9396\uff0c\u901a\u5e38\u4f7f\u7528 SETNX \u547d\u4ee4\u3002SETNX \u547d\u4ee4\u7684\u5168\u540d\u662f &#8220;SET if Not eXists&#8221;\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u7576\u9375\u4e0d\u5b58\u5728\u6642\u8a2d\u7f6e\u9375\u7684\u503c\uff0c\u4e26\u8fd4\u56de 1\uff1b\u5982\u679c\u9375\u5df2\u7d93\u5b58\u5728\uff0c\u5247\u8fd4\u56de 0\u3002\u9019\u4e00\u7279\u6027\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5229\u7528 Redis \u4f86\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e5%af%a6%e7%8f%be%e6%ad%a5%e9%a9%9f-JfmhNZvyBk\">\u57fa\u672c\u5be6\u73fe\u6b65\u9a5f<\/h3>\n<pre><code>\n1. \u4f7f\u7528 SETNX \u547d\u4ee4\u5617\u8a66\u7372\u53d6\u9396\u3002\n2. \u5982\u679c\u7372\u53d6\u6210\u529f\uff0c\u5247\u57f7\u884c\u81e8\u754c\u5340\u7684\u64cd\u4f5c\u3002\n3. \u64cd\u4f5c\u5b8c\u6210\u5f8c\uff0c\u4f7f\u7528 DEL \u547d\u4ee4\u91cb\u653e\u9396\u3002\n4. \u5982\u679c\u7372\u53d6\u5931\u6557\uff0c\u5247\u53ef\u4ee5\u9078\u64c7\u91cd\u8a66\u6216\u7b49\u5f85\u3002\n<\/code><\/pre>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-JfmhNZvyBk\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Python \u548c Redis \u5be6\u73fe\u7684\u7c21\u55ae\u9396\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nimport redis\nimport time\n\n# \u9023\u63a5\u5230 Redis\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<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-JfmhNZvyBk\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528 Redis \u5be6\u73fe\u9396\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u7279\u5225\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\uff0c\u61c9\u8a72\u70ba\u9396\u8a2d\u7f6e\u4e00\u500b\u5408\u7406\u7684\u904e\u671f\u6642\u9593\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\u9032\u7a0b\u4e4b\u9593\u7684\u5e72\u64fe\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u7372\u53d6\u9396\u6216\u91cb\u653e\u9396\u7684\u904e\u7a0b\u4e2d\uff0c\u61c9\u8a72\u8003\u616e\u5230\u53ef\u80fd\u51fa\u73fe\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-JfmhNZvyBk\">\u7e3d\u7d50<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u4e14\u7c21\u55ae\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u8de8\u9032\u7a0b\u7684\u72c0\u614b\u540c\u6b65\u9396\u3002\u901a\u904e\u4f7f\u7528 SETNX \u547d\u4ee4\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u6027\u548c\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u8cc7\u6e90\u7ba1\u7406\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4f86\u8aaa\uff0cRedis \u662f\u4e00\u500b\u7406\u60f3\u7684\u9078\u64c7\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528 Redis \u5be6\u73fe\u9ad8\u6548\u7684\u8de8\u9032\u7a0b\u72c0\u614b\u540c\u6b65\u9396\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\u8207\u6578\u64da\u4e00\u81f4\u6027\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-128355","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128355","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=128355"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128355\/revisions"}],"predecessor-version":[{"id":128356,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128355\/revisions\/128356"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128355"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128355"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}