{"id":196462,"date":"2024-11-13T23:47:23","date_gmt":"2024-11-13T15:47:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196462\/"},"modified":"2024-11-13T23:47:25","modified_gmt":"2024-11-13T15:47:25","slug":"%e5%88%b6redis%e9%8e%96%e6%a9%9f%e5%88%b6%e5%af%a6%e7%8f%be%e4%ba%8b%e5%8b%99%e5%ae%89%e5%85%a8%e7%9a%84%e5%88%a9%e5%99%a8%ef%bc%88redis%e9%8e%96%e6%a9%9f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196462\/","title":{"rendered":"\u5236Redis\u9396\u6a5f\u5236\u5be6\u73fe\u4e8b\u52d9\u5b89\u5168\u7684\u5229\u5668\uff08redis\u9396\u6a5f\uff09"},"content":{"rendered":"<h1 id=\"%e5%88%b6redis%e9%8e%96%e6%a9%9f%e5%88%b6%e5%af%a6%e7%8f%be%e4%ba%8b%e5%8b%99%e5%ae%89%e5%85%a8%e7%9a%84%e5%88%a9%e5%99%a8%ef%bc%88redis%e9%8e%96%e6%a9%9f%ef%bc%89-YmJlyMukJH\">\u5236Redis\u9396\u6a5f\u5236\u5be6\u73fe\u4e8b\u52d9\u5b89\u5168\u7684\u5229\u5668\uff08redis\u9396\u6a5f\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b89\u5168\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6a5f\u5236\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f\u9396\u6a5f\u5236\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u9396\u6a5f\u5236\u7684\u539f\u7406\u3001\u5be6\u73fe\u65b9\u5f0f\u53ca\u5176\u5728\u4e8b\u52d9\u5b89\u5168\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%8e%96%e6%a9%9f%e5%88%b6%ef%bc%9f-YmJlyMukJH\">\u4ec0\u9ebc\u662fRedis\u9396\u6a5f\u5236\uff1f<\/h2>\n<p>Redis\u9396\u6a5f\u5236\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6280\u8853\u3002\u7576\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u5617\u8a66\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u9396\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u3002Redis\u63d0\u4f9b\u4e86\u7c21\u55ae\u800c\u6709\u6548\u7684\u9396\u5be6\u73fe\u65b9\u5f0f\uff0c\u901a\u5e38\u4f7f\u7528SETNX\u547d\u4ee4\u4f86\u5275\u5efa\u9396\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-YmJlyMukJH\">Redis\u9396\u7684\u57fa\u672c\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\u4f7f\u7528Redis\u5be6\u73fe\u9396\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u5ba2\u6236\u7aef\u5617\u8a66\u7372\u53d6\u9396\uff0c\u901a\u904e\u57f7\u884cSETNX\u547d\u4ee4\u4f86\u8a2d\u7f6e\u4e00\u500b\u9375\uff08\u4f8b\u5982\uff0c&#8221;lock_key&#8221;\uff09\u4f86\u8868\u793a\u9396\u7684\u72c0\u614b\u3002<\/li>\n<li>\u5982\u679cSETNX\u8fd4\u56de1\uff0c\u5247\u8868\u793a\u9396\u7372\u53d6\u6210\u529f\uff1b\u5982\u679c\u8fd4\u56de0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u5ba2\u6236\u7aef\u7372\u53d6\u3002<\/li>\n<li>\u7372\u53d6\u9396\u7684\u5ba2\u6236\u7aef\u53ef\u4ee5\u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u64cd\u4f5c\u3002<\/li>\n<li>\u64cd\u4f5c\u5b8c\u6210\u5f8c\uff0c\u5ba2\u6236\u7aef\u9700\u8981\u91cb\u653e\u9396\uff0c\u901a\u904e\u522a\u9664\u9396\u9375\u4f86\u5be6\u73fe\u3002<\/li>\n<\/ol>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e7%a4%ba%e4%be%8b-YmJlyMukJH\">Redis\u9396\u7684\u5be6\u73fe\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Redis\u9396\u5be6\u73fe\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):\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    if r.get(lock_name) == identifier:\n        r.delete(lock_name)\n\n# \u4f7f\u7528\u9396\nlock_name = \"my_lock\"\nidentifier = acquire_lock(lock_name)\nif identifier:\n    try:\n        # \u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u64cd\u4f5c\n        pass\n    finally:\n        release_lock(lock_name, identifier)\nelse:\n    print(\"\u7121\u6cd5\u7372\u53d6\u9396\")\n<\/code><\/pre>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-YmJlyMukJH\">Redis\u9396\u7684\u512a\u7f3a\u9ede<\/h2>\n<h3 id=\"%e5%84%aa%e9%bb%9e-YmJlyMukJH\">\u512a\u9ede<\/h3>\n<ul>\n<li>\u9ad8\u6548\uff1aRedis\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u80fd\u5920\u5feb\u901f\u7372\u53d6\u548c\u91cb\u653e\u9396\u3002<\/li>\n<li>\u7c21\u55ae\uff1a\u4f7f\u7528Redis\u7684\u57fa\u672c\u547d\u4ee4\u5373\u53ef\u5be6\u73fe\u9396\u6a5f\u5236\uff0c\u6613\u65bc\u7406\u89e3\u548c\u5be6\u73fe\u3002<\/li>\n<li>\u9748\u6d3b\uff1a\u53ef\u4ee5\u6839\u64da\u9700\u8981\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u907f\u514d\u6b7b\u9396\u7684\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-YmJlyMukJH\">\u7f3a\u9ede<\/h3>\n<ul>\n<li>\u4e0d\u53ef\u9760\uff1a\u5982\u679c\u5ba2\u6236\u7aef\u5728\u6301\u6709\u9396\u7684\u60c5\u6cc1\u4e0b\u5d29\u6f70\uff0c\u9396\u53ef\u80fd\u7121\u6cd5\u88ab\u91cb\u653e\uff0c\u5c0e\u81f4\u5176\u4ed6\u5ba2\u6236\u7aef\u7121\u6cd5\u7372\u53d6\u9396\u3002<\/li>\n<li>\u9700\u8981\u984d\u5916\u7684\u908f\u8f2f\u4f86\u8655\u7406\u9396\u7684\u904e\u671f\u548c\u91cd\u8a66\u6a5f\u5236\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-YmJlyMukJH\">\u7d50\u8ad6<\/h2>\n<p>Redis\u9396\u6a5f\u5236\u662f\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u7528\u65bc\u78ba\u4fdd\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b89\u5168\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5229\u7528Redis\u9396\u4f86\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u554f\u984c\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528Redis\u9396\u6642\uff0c\u4e5f\u9700\u8981\u8003\u616e\u5176\u6f5b\u5728\u7684\u7f3a\u9ede\uff0c\u4e26\u8a2d\u8a08\u76f8\u61c9\u7684\u5bb9\u932f\u6a5f\u5236\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u53ca\u5176\u4ed6<code>\u4f3a\u670d\u5668<\/code>\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u9396\u6a5f\u5236\u5982\u4f55\u5be6\u73fe\u4e8b\u52d9\u5b89\u5168\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\uff0c\u6210\u70ba\u958b\u767c\u8005\u7684\u5229\u5668\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-196462","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196462","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=196462"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196462\/revisions"}],"predecessor-version":[{"id":196463,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196462\/revisions\/196463"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}