{"id":98300,"date":"2024-10-21T01:27:16","date_gmt":"2024-10-20T17:27:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/98300\/"},"modified":"2024-10-21T01:27:17","modified_gmt":"2024-10-20T17:27:17","slug":"redis-%e6%8c%81%e7%ba%8c%e6%b6%88%e6%81%af%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/98300\/","title":{"rendered":"Redis \u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236"},"content":{"rendered":"<h1 id=\"redis-%e6%8c%81%e7%ba%8c%e6%b6%88%e6%81%af%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6-ihYjABCOkH\">Redis \u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u6d88\u606f\u968a\u5217\u7cfb\u7d71\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\uff0c\u7279\u5225\u662f\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u4e0d\u50c5\u53ef\u4ee5\u7528\u4f5c\u7de9\u5b58\uff0c\u9084\u53ef\u4ee5\u7528\u65bc\u6d88\u606f\u968a\u5217\u3002\u672c\u6587\u5c07\u63a2\u8a0e Redis \u7684\u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5728\u6d88\u606f\u8655\u7406\u904e\u7a0b\u4e2d\u5be6\u73fe\u53ef\u9760\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%8c%81%e7%ba%8c%e6%b6%88%e6%81%af%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6%ef%bc%9f-ihYjABCOkH\">\u4ec0\u9ebc\u662f\u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236\uff1f<\/h2>\n<p>\u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236\u662f\u6307\u5728\u6d88\u606f\u8655\u7406\u5931\u6557\u6642\uff0c\u7cfb\u7d71\u80fd\u5920\u81ea\u52d5\u91cd\u8a66\u8a72\u6d88\u606f\u7684\u6a5f\u5236\u3002\u9019\u5c0d\u65bc\u78ba\u4fdd\u6d88\u606f\u4e0d\u6703\u4e1f\u5931\u4ee5\u53ca\u6700\u7d42\u4e00\u81f4\u6027\u81f3\u95dc\u91cd\u8981\u3002\u7576\u4e00\u500b\u6d88\u606f\u88ab\u767c\u9001\u5230\u6d88\u8cbb\u8005\u6642\uff0c\u82e5\u6d88\u8cbb\u8005\u56e0\u67d0\u7a2e\u539f\u56e0\u7121\u6cd5\u8655\u7406\u8a72\u6d88\u606f\uff0c\u5247\u9700\u8981\u6709\u4e00\u500b\u6a5f\u5236\u4f86\u91cd\u65b0\u5617\u8a66\u8655\u7406\u8a72\u6d88\u606f\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e6%b6%88%e6%81%af%e9%9a%8a%e5%88%97%e5%af%a6%e7%8f%be-ihYjABCOkH\">Redis \u7684\u6d88\u606f\u968a\u5217\u5be6\u73fe<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u7d50\u69cb\u4f86\u5be6\u73fe\u6d88\u606f\u968a\u5217\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u662f\u5217\u8868\uff08List\uff09\u3002\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528 Redis \u7684 <code>LPUSH<\/code> \u548c <code>RPOP<\/code> \u547d\u4ee4\u4f86\u5be6\u73fe\u6d88\u606f\u7684\u63a8\u9001\u548c\u5f48\u51fa\u3002<\/p>\n<pre><code>LPUSH queue_name message\nRPOP queue_name\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u904e\u7a0b\u4e2d\uff0c\u6d88\u606f\u88ab\u63a8\u9001\u5230\u968a\u5217\u7684\u5de6\u5074\uff0c\u7136\u5f8c\u5f9e\u53f3\u5074\u5f48\u51fa\u9032\u884c\u8655\u7406\u3002\u9019\u7a2e\u65b9\u5f0f\u7c21\u55ae\u4e14\u9ad8\u6548\uff0c\u4f46\u5728\u8655\u7406\u5931\u6557\u7684\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u5be6\u73fe\u91cd\u8a66\u5c31\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002<\/p>\n<h2 id=\"%e5%af%a6%e7%8f%be%e6%8c%81%e7%ba%8c%e6%b6%88%e6%81%af%e9%87%8d%e8%a9%a6%e7%9a%84%e7%ad%96%e7%95%a5-ihYjABCOkH\">\u5be6\u73fe\u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u7684\u7b56\u7565<\/h2>\n<p>\u8981\u5be6\u73fe\u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u6b7b\u4fe1\u968a\u5217\uff08Dead Letter Queue\uff09<\/strong>\uff1a\u7576\u6d88\u606f\u8655\u7406\u5931\u6557\u9054\u5230\u4e00\u5b9a\u6b21\u6578\u5f8c\uff0c\u53ef\u4ee5\u5c07\u8a72\u6d88\u606f\u8f49\u79fb\u5230\u4e00\u500b\u5c08\u9580\u7684\u6b7b\u4fe1\u968a\u5217\u4e2d\uff0c\u4fbf\u65bc\u5f8c\u7e8c\u7684\u4eba\u5de5\u5e72\u9810\u6216\u5206\u6790\u3002<\/li>\n<li><strong>\u91cd\u8a66\u8a08\u6578\u5668<\/strong>\uff1a\u5728\u6bcf\u6b21\u8655\u7406\u6d88\u606f\u6642\uff0c\u8a18\u9304\u91cd\u8a66\u6b21\u6578\u3002\u5982\u679c\u91cd\u8a66\u6b21\u6578\u8d85\u904e\u9810\u8a2d\u7684\u4e0a\u9650\uff0c\u5247\u5c07\u8a72\u6d88\u606f\u79fb\u81f3\u6b7b\u4fe1\u968a\u5217\u3002<\/li>\n<li><strong>\u5ef6\u9072\u91cd\u8a66<\/strong>\uff1a\u5728\u91cd\u8a66\u4e4b\u524d\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u4e00\u500b\u5ef6\u9072\u6642\u9593\uff0c\u907f\u514d\u77ac\u6642\u91cd\u8a66\u5c0e\u81f4\u7684\u7cfb\u7d71\u8ca0\u64d4\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-ihYjABCOkH\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 Redis \u5be6\u73fe\u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236\uff1a<\/p>\n<pre><code>import redis\nimport time\n\nr = redis.Redis()\n\ndef process_message(message):\n    # \u6a21\u64ec\u6d88\u606f\u8655\u7406\n    if message == \"fail\":\n        raise Exception(\"Processing failed\")\n\ndef retry_message(queue_name, dead_letter_queue_name):\n    while True:\n        message = r.rpop(queue_name)\n        if message:\n            try:\n                process_message(message)\n            except Exception as e:\n                print(f\"Error processing message: {e}\")\n                retry_count = r.incr(f\"retry_count:{message}\")\n                if retry_count &gt; 3:\n                    r.lpush(dead_letter_queue_name, message)\n                    print(f\"Message moved to dead letter queue: {message}\")\n                else:\n                    r.lpush(queue_name, message)\n                    time.sleep(2)  # \u5ef6\u9072\u91cd\u8a66\n        else:\n            time.sleep(1)  # \u7b49\u5f85\u65b0\u6d88\u606f\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-ihYjABCOkH\">\u7d50\u8ad6<\/h2>\n<p>Redis \u7684\u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236\u662f\u78ba\u4fdd\u6d88\u606f\u53ef\u9760\u6027\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u8655\u7406\u6d88\u606f\u5931\u6557\u7684\u60c5\u6cc1\uff0c\u4e26\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u6b7b\u4fe1\u968a\u5217\u3001\u91cd\u8a66\u8a08\u6578\u5668\u9084\u662f\u5ef6\u9072\u91cd\u8a66\u7b56\u7565\uff0c\u9019\u4e9b\u65b9\u6cd5\u90fd\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u5728\u9762\u5c0d\u6311\u6230\u6642\u4fdd\u6301\u9748\u6d3b\u6027\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u548c\u5176\u4ed6\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Redis\u6301\u7e8c\u6d88\u606f\u91cd\u8a66\u6a5f\u5236\uff0c\u78ba\u4fdd\u6d88\u606f\u53ef\u9760\u50b3\u905e\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\uff0c\u907f\u514d\u6578\u64da\u4e1f\u5931\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-98300","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98300","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=98300"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98300\/revisions"}],"predecessor-version":[{"id":98301,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98300\/revisions\/98301"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=98300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=98300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=98300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}