{"id":128959,"date":"2024-10-26T18:02:18","date_gmt":"2024-10-26T10:02:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128959\/"},"modified":"2024-10-26T18:02:19","modified_gmt":"2024-10-26T10:02:19","slug":"redis%e5%af%a6%e7%8f%be%e8%a1%8c%e7%b4%9a%e9%8e%96%e4%b8%80%e5%80%8b%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88%ef%bc%88redis-%e8%a1%8c%e7%b4%9a%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128959\/","title":{"rendered":"Redis\u5be6\u73fe\u884c\u7d1a\u9396\u4e00\u500b\u89e3\u6c7a\u65b9\u6848\uff08redis \u884c\u7d1a\u9396\uff09"},"content":{"rendered":"<h1 id=\"redis%e5%af%a6%e7%8f%be%e8%a1%8c%e7%b4%9a%e9%8e%96%e4%b8%80%e5%80%8b%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88%ef%bc%88redis-%e8%a1%8c%e7%b4%9a%e9%8e%96%ef%bc%89-bmIMTSyujc\">Redis\u5be6\u73fe\u884c\u7d1a\u9396\u4e00\u500b\u89e3\u6c7a\u65b9\u6848\uff08redis \u884c\u7d1a\u9396\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u4e26\u767c\u63a7\u5236\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\u5be6\u73fe\u884c\u7d1a\u9396\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u884c\u7d1a\u9396\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%a1%8c%e7%b4%9a%e9%8e%96%ef%bc%9f-bmIMTSyujc\">\u4ec0\u9ebc\u662f\u884c\u7d1a\u9396\uff1f<\/h2>\n<p>\u884c\u7d1a\u9396\u662f\u4e00\u7a2e\u6578\u64da\u5eab\u9396\u5b9a\u6a5f\u5236\uff0c\u5141\u8a31\u591a\u500b\u4e8b\u52d9\u540c\u6642\u8a2a\u554f\u4e0d\u540c\u7684\u884c\uff0c\u800c\u4e0d\u6703\u4e92\u76f8\u5e72\u64fe\u3002\u9019\u7a2e\u9396\u5b9a\u65b9\u5f0f\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\u5c24\u70ba\u91cd\u8981\uff0c\u56e0\u70ba\u5b83\u80fd\u5920\u63d0\u9ad8\u7cfb\u7d71\u7684\u541e\u5410\u91cf\u548c\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87redis%ef%bc%9f-bmIMTSyujc\">\u70ba\u4ec0\u9ebc\u9078\u64c7Redis\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>\u9ad8\u6548\u7684\u6578\u64da\u5b58\u53d6\u901f\u5ea6<\/li>\n<li>\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb<\/li>\n<li>\u7c21\u55ae\u6613\u7528\u7684API<\/li>\n<li>\u826f\u597d\u7684\u64f4\u5c55\u6027<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u7279\u6027\u4f7f\u5f97Redis\u6210\u70ba\u5be6\u73fe\u884c\u7d1a\u9396\u7684\u7406\u60f3\u9078\u64c7\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u9ad8\u4e26\u767c\u7684\u61c9\u7528\u5834\u666f\u4e2d\u3002<\/p>\n<h2 id=\"redis%e8%a1%8c%e7%b4%9a%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e6%a1%88-bmIMTSyujc\">Redis\u884c\u7d1a\u9396\u7684\u5be6\u73fe\u65b9\u6848<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u4f7f\u7528SETNX\u547d\u4ee4\u4f86\u5be6\u73fe\u884c\u7d1a\u9396\u3002SETNX\u547d\u4ee4\u7684\u5168\u540d\u662f\u201cSET if Not eXists\u201d\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u624d\u6703\u8a2d\u7f6e\u9375\u7684\u503c\u3002\u9019\u4e00\u7279\u6027\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-bmIMTSyujc\">\u57fa\u672c\u6b65\u9a5f<\/h3>\n<ol>\n<li>\u5617\u8a66\u7372\u53d6\u9396\uff1a\u4f7f\u7528SETNX\u547d\u4ee4\u8a2d\u7f6e\u4e00\u500b\u9396\u9375\u3002<\/li>\n<li>\u57f7\u884c\u696d\u52d9\u908f\u8f2f\uff1a\u5982\u679c\u6210\u529f\u7372\u53d6\u9396\uff0c\u5247\u57f7\u884c\u76f8\u61c9\u7684\u696d\u52d9\u908f\u8f2f\u3002<\/li>\n<li>\u91cb\u653e\u9396\uff1a\u696d\u52d9\u908f\u8f2f\u57f7\u884c\u5b8c\u7562\u5f8c\uff0c\u522a\u9664\u9396\u9375\u3002<\/li>\n<\/ol>\n<h3 id=\"%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-bmIMTSyujc\">\u4ee3\u78bc\u793a\u4f8b<\/h3>\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):\n    identifier = str(uuid.uuid4())\n    end = time.time() + acquire_time\n    while time.time() &lt; end:\n        if r.setnx(lock_name, identifier):\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\u793a\u4f8b\nlock_name = \"my_lock\"\nidentifier = acquire_lock(lock_name)\nif identifier:\n    try:\n        # \u57f7\u884c\u696d\u52d9\u908f\u8f2f\n        print(\"\u7372\u53d6\u9396\u6210\u529f\uff0c\u57f7\u884c\u696d\u52d9\u908f\u8f2f\")\n    finally:\n        release_lock(lock_name, identifier)\nelse:\n    print(\"\u7372\u53d6\u9396\u5931\u6557\")\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-bmIMTSyujc\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u5be6\u73fe\u884c\u7d1a\u9396\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u9396\u7684\u904e\u671f\u6642\u9593\uff1a\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\uff0c\u61c9\u8a72\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u9396\u7684\u552f\u4e00\u6027\uff1a\u4f7f\u7528\u552f\u4e00\u6a19\u8b58\u7b26\u4f86\u78ba\u4fdd\u9396\u7684\u552f\u4e00\u6027\u3002<\/li>\n<li>\u932f\u8aa4\u8655\u7406\uff1a\u5728\u696d\u52d9\u908f\u8f2f\u4e2d\u61c9\u8a72\u8003\u616e\u5230\u53ef\u80fd\u7684\u7570\u5e38\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bmIMTSyujc\">\u7e3d\u7d50<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u7684\u884c\u7d1a\u9396\u5be6\u73fe\u65b9\u6848\uff0c\u80fd\u5920\u6709\u6548\u5730\u89e3\u6c7a\u9ad8\u4e26\u767c\u74b0\u5883\u4e0b\u7684\u6578\u64da\u4e00\u81f4\u6027\u554f\u984c\u3002\u901a\u904e\u4f7f\u7528SETNX\u547d\u4ee4\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u53d6\u548c\u91cb\u653e\u9396\uff0c\u5f9e\u800c\u4fdd\u8b49\u696d\u52d9\u908f\u8f2f\u7684\u6b63\u78ba\u57f7\u884c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u670d\u52d9\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u884c\u7d1a\u9396\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u6578\u64da\u4e00\u81f4\u6027\u8207\u4e26\u767c\u6027\u80fd\uff0c\u78ba\u4fdd\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u8207\u64cd\u4f5c\u5b89\u5168\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-128959","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128959","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=128959"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128959\/revisions"}],"predecessor-version":[{"id":128960,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128959\/revisions\/128960"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}