{"id":163485,"date":"2024-11-04T23:54:29","date_gmt":"2024-11-04T15:54:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163485\/"},"modified":"2024-11-04T23:54:30","modified_gmt":"2024-11-04T15:54:30","slug":"%e8%a7%a3%e6%b1%baredis%e7%b7%a9%e5%ad%98%e9%9b%aa%e5%b4%a9%e7%9a%84%e9%8e%96%e6%a9%9f%e5%88%b6%ef%bc%88redis%e7%b7%a9%e5%ad%98%e9%9b%aa%e5%b4%a9%e5%8a%a0%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163485\/","title":{"rendered":"\u89e3\u6c7aRedis\u7de9\u5b58\u96ea\u5d29\u7684\u9396\u6a5f\u5236\uff08redis\u7de9\u5b58\u96ea\u5d29\u52a0\u9396\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%b1%baredis%e7%b7%a9%e5%ad%98%e9%9b%aa%e5%b4%a9%e7%9a%84%e9%8e%96%e6%a9%9f%e5%88%b6%ef%bc%88redis%e7%b7%a9%e5%ad%98%e9%9b%aa%e5%b4%a9%e5%8a%a0%e9%8e%96%ef%bc%89-qylzUXsIMF\">\u89e3\u6c7aRedis\u7de9\u5b58\u96ea\u5d29\u7684\u9396\u6a5f\u5236\uff08redis\u7de9\u5b58\u96ea\u5d29\u52a0\u9396\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u7de9\u5b58\u89e3\u6c7a\u65b9\u6848\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u3002\u7136\u800c\uff0c\u96a8\u8457\u4f7f\u7528\u91cf\u7684\u589e\u52a0\uff0cRedis\u7de9\u5b58\u96ea\u5d29\u7684\u554f\u984c\u4e5f\u65e5\u76ca\u51f8\u986f\u3002\u7de9\u5b58\u96ea\u5d29\u662f\u6307\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u7de9\u5b58\u4e2d\u7684\u5927\u91cf\u6578\u64da\u540c\u6642\u904e\u671f\uff0c\u5c0e\u81f4\u5927\u91cf\u8acb\u6c42\u76f4\u63a5\u6253\u5230\u5f8c\u7aef\u6578\u64da\u5eab\uff0c\u5f9e\u800c\u9020\u6210\u6578\u64da\u5eab\u7684\u77ac\u6642\u8ca0\u8f09\u904e\u9ad8\uff0c\u751a\u81f3\u5d29\u6f70\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\uff0c\u9396\u6a5f\u5236\u6210\u70ba\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b7%a9%e5%ad%98%e9%9b%aa%e5%b4%a9%ef%bc%9f-qylzUXsIMF\">\u4ec0\u9ebc\u662f\u7de9\u5b58\u96ea\u5d29\uff1f<\/h2>\n<p>\u7de9\u5b58\u96ea\u5d29\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u5927\u91cf\u7684\u7de9\u5b58\u6578\u64da\u5728\u540c\u4e00\u6642\u9593\u904e\u671f\u3002<\/li>\n<li>\u9ad8\u4e26\u767c\u8acb\u6c42\u540c\u6642\u5230\u9054\uff0c\u5c0e\u81f4\u5f8c\u7aef\u6578\u64da\u5eab\u7121\u6cd5\u627f\u53d7\u58d3\u529b\u3002<\/li>\n<\/ul>\n<p>\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u7cfb\u7d71\u7684\u53ef\u7528\u6027\u548c\u7a69\u5b9a\u6027\u6703\u53d7\u5230\u56b4\u91cd\u5f71\u97ff\u3002\u56e0\u6b64\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u9632\u6b62\u7de9\u5b58\u96ea\u5d29\u662f\u6bcf\u500b\u958b\u767c\u8005\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002<\/p>\n<h2 id=\"%e9%8e%96%e6%a9%9f%e5%88%b6%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-qylzUXsIMF\">\u9396\u6a5f\u5236\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u9396\u6a5f\u5236\u7684\u6838\u5fc3\u601d\u60f3\u662f\u901a\u904e\u5c0d\u7de9\u5b58\u6578\u64da\u7684\u52a0\u9396\u4f86\u63a7\u5236\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u8a2a\u554f\u3002\u7576\u4e00\u500b\u8acb\u6c42\u9700\u8981\u5f9e\u7de9\u5b58\u4e2d\u7372\u53d6\u6578\u64da\u6642\uff0c\u9996\u5148\u6aa2\u67e5\u8a72\u6578\u64da\u662f\u5426\u5b58\u5728\u3002\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u9032\u884c\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u52a0\u9396\uff1a\u5728\u8acb\u6c42\u8655\u7406\u904e\u7a0b\u4e2d\uff0c\u5c0d\u8a72\u6578\u64da\u52a0\u9396\uff0c\u9632\u6b62\u5176\u4ed6\u8acb\u6c42\u540c\u6642\u9032\u5165\u3002<\/li>\n<li>\u67e5\u8a62\u6578\u64da\u5eab\uff1a\u5f9e\u5f8c\u7aef\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u6578\u64da\u3002<\/li>\n<li>\u66f4\u65b0\u7de9\u5b58\uff1a\u5c07\u67e5\u8a62\u5230\u7684\u6578\u64da\u66f4\u65b0\u5230Redis\u7de9\u5b58\u4e2d\u3002<\/li>\n<li>\u91cb\u653e\u9396\uff1a\u5b8c\u6210\u6578\u64da\u66f4\u65b0\u5f8c\uff0c\u91cb\u653e\u9396\uff0c\u5141\u8a31\u5176\u4ed6\u8acb\u6c42\u9032\u5165\u3002<\/li>\n<\/ol>\n<h2 id=\"%e5%af%a6%e7%8f%be%e9%8e%96%e6%a9%9f%e5%88%b6%e7%9a%84%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-qylzUXsIMF\">\u5be6\u73fe\u9396\u6a5f\u5236\u7684\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u5be6\u73fe\u9396\u6a5f\u5236\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nimport redis\nimport time\nimport threading\n\n# \u9023\u63a5Redis\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\ndef get_data(key):\n    # \u5617\u8a66\u7372\u53d6\u9396\n    lock = r.lock(key + \"_lock\", timeout=10)\n    if lock.acquire(blocking=True):\n        try:\n            # \u6aa2\u67e5\u7de9\u5b58\n            value = r.get(key)\n            if value is None:\n                # \u5982\u679c\u7de9\u5b58\u4e0d\u5b58\u5728\uff0c\u67e5\u8a62\u6578\u64da\u5eab\n                value = query_database(key)\n                # \u66f4\u65b0\u7de9\u5b58\n                r.set(key, value, ex=60)  # \u8a2d\u7f6e\u904e\u671f\u6642\u9593\n            return value\n        finally:\n            lock.release()\n    else:\n        # \u5982\u679c\u7121\u6cd5\u7372\u53d6\u9396\uff0c\u5247\u7b49\u5f85\u91cd\u8a66\n        time.sleep(1)\n        return get_data(key)\n\ndef query_database(key):\n    # \u6a21\u64ec\u6578\u64da\u5eab\u67e5\u8a62\n    return \"data_for_\" + key\n\n# \u4f7f\u7528\u793a\u4f8b\nprint(get_data(\"example_key\"))\n<\/code><\/pre>\n<h2 id=\"%e5%85%b6%e4%bb%96%e9%98%b2%e6%ad%a2%e7%b7%a9%e5%ad%98%e9%9b%aa%e5%b4%a9%e7%9a%84%e7%ad%96%e7%95%a5-qylzUXsIMF\">\u5176\u4ed6\u9632\u6b62\u7de9\u5b58\u96ea\u5d29\u7684\u7b56\u7565<\/h2>\n<p>\u9664\u4e86\u9396\u6a5f\u5236\uff0c\u9084\u6709\u5176\u4ed6\u5e7e\u7a2e\u7b56\u7565\u53ef\u4ee5\u5e6b\u52a9\u9632\u6b62\u7de9\u5b58\u96ea\u5d29\uff1a<\/p>\n<ul>\n<li><strong>\u96a8\u6a5f\u904e\u671f\u6642\u9593\uff1a<\/strong>\u70ba\u7de9\u5b58\u6578\u64da\u8a2d\u7f6e\u96a8\u6a5f\u7684\u904e\u671f\u6642\u9593\uff0c\u907f\u514d\u5927\u91cf\u6578\u64da\u540c\u6642\u904e\u671f\u3002<\/li>\n<li><strong>\u9810\u52a0\u8f09\u7de9\u5b58\uff1a<\/strong>\u5728\u7cfb\u7d71\u9592\u7f6e\u6642\uff0c\u4e3b\u52d5\u5f9e\u6578\u64da\u5eab\u4e2d\u52a0\u8f09\u6578\u64da\u5230\u7de9\u5b58\u4e2d\uff0c\u6e1b\u5c11\u9ad8\u5cf0\u671f\u7684\u8acb\u6c42\u58d3\u529b\u3002<\/li>\n<li><strong>\u7194\u65b7\u6a5f\u5236\uff1a<\/strong>\u7576\u6aa2\u6e2c\u5230\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u8ca0\u8f09\u904e\u9ad8\u6642\uff0c\u66ab\u6642\u62d2\u7d55\u8acb\u6c42\uff0c\u8fd4\u56de\u9810\u8a2d\u503c\uff0c\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u8acb\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-qylzUXsIMF\">\u7e3d\u7d50<\/h2>\n<p>\u89e3\u6c7aRedis\u7de9\u5b58\u96ea\u5d29\u7684\u554f\u984c\u9700\u8981\u591a\u7a2e\u7b56\u7565\u7684\u7d50\u5408\uff0c\u5176\u4e2d\u9396\u6a5f\u5236\u662f\u4e00\u7a2e\u6709\u6548\u7684\u624b\u6bb5\u3002\u901a\u904e\u5c0d\u7de9\u5b58\u6578\u64da\u7684\u52a0\u9396\uff0c\u53ef\u4ee5\u6709\u6548\u63a7\u5236\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u8a2a\u554f\uff0c\u6e1b\u5c11\u77ac\u6642\u8acb\u6c42\u7684\u58d3\u529b\u3002\u6b64\u5916\uff0c\u96a8\u6a5f\u904e\u671f\u6642\u9593\u3001\u9810\u52a0\u8f09\u7de9\u5b58\u548c\u7194\u65b7\u6a5f\u5236\u7b49\u7b56\u7565\u4e5f\u80fd\u9032\u4e00\u6b65\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u9ad8\u4e26\u767c\u60c5\u6cc1\u4e0b\u7cfb\u7d71\u7684\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u89e3\u6c7aRedis\u7de9\u5b58\u96ea\u5d29\u7684\u9396\u6a5f\u5236\uff0c\u4e86\u89e3\u5982\u4f55\u901a\u904e\u52a0\u9396\u6280\u8853\u6709\u6548\u9632\u6b62\u7de9\u5b58\u5931\u6548\u5e36\u4f86\u7684\u6027\u80fd\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-163485","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163485","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=163485"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163485\/revisions"}],"predecessor-version":[{"id":163486,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163485\/revisions\/163486"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}