{"id":206007,"date":"2025-06-12T08:48:35","date_gmt":"2025-06-12T00:48:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206007\/"},"modified":"2025-06-12T08:48:35","modified_gmt":"2025-06-12T00:48:35","slug":"%e4%bd%bf%e7%94%a8-singleflight-%e9%81%bf%e5%85%8d%e5%b9%b6%e5%8f%91%e6%95%b0%e6%8d%ae%e8%ae%bf%e9%97%ae%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e5%bb%b6%e8%bf%9f%e5%be%88%e9%87%8d%e8%a6%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206007\/","title":{"rendered":"## \u4f7f\u7528 singleflight \u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\uff1a\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u5f88\u91cd\u8981\uff1f"},"content":{"rendered":"<p>\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a## \u4f7f\u7528 singleflight \u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\uff1a\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u5f88\u91cd\u8981\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241031\/173036256367233cc37f6e6.jpg\" class=\"aligncenter\">,<br \/>\n<strong>\u5173\u4e8e\u4f7f\u7528 singleflight \u65f6\u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\u7684\u8ba8\u8bba<\/strong>,\u5e76\u53d1\u83b7\u53d6\u6570\u636e\u65f6\uff0c\u4e3a\u4e86\u9632\u6b62\u591a\u4e2a\u8bf7\u6c42\u540c\u65f6\u8bbf\u95ee\u6570\u636e\u5e93\uff0c\u4e00\u79cd\u5e38\u89c1\u7684\u89e3\u51b3\u65b9\u6848\u662f\u4f7f\u7528 singleflight \u5e93\u5b9e\u65bd\u5e76\u53d1\u63a7\u5236\u3002,\u7136\u800c\uff0c\u5728\u4e00\u4e2a\u5b9e\u9645\u573a\u666f\u4e2d\uff0c\u5f53\u4f7f\u7528 singleflight \u65f6\uff0c\u5374\u53d1\u73b0\u5e76\u53d1\u83b7\u53d6\u6570\u636e\u4f9d\u7136\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u8bbf\u95ee\u8fc7\u8f7d\u3002,<br \/>\n<strong>\u95ee\u9898\u539f\u56e0\u5206\u6790<\/strong>,\u6839\u636e\u63d0\u4f9b\u7684\u4ee3\u7801\uff0csingleflight \u7684\u4f7f\u7528\u662f\u5728 getdata \u51fd\u6570\u4e2d\u3002\u8be5\u51fd\u6570\u9996\u5148\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u5982\u679c\u7f13\u5b58\u4e2d\u4e0d\u5b58\u5728\uff0c\u5219\u901a\u8fc7 singleflight \u7684 do \u65b9\u6cd5\u5e76\u53d1\u8bbf\u95ee\u6570\u636e\u5e93\u83b7\u53d6\u6570\u636e\u3002,\u7136\u800c\uff0c\u95ee\u9898\u5728\u4e8e getdatafromdb \u51fd\u6570\u6267\u884c\u901f\u5ea6\u8fc7\u5feb\uff0c\u5f53\u6240\u6709\u5e76\u53d1\u534f\u7a0b\u90fd\u5728\u540c\u65f6\u8fd0\u884c\u65f6\uff0c\u53ea\u6709\u7b2c\u4e00\u4e2a\u8bf7\u6c42\u80fd\u591f\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u5176\u4f59\u8bf7\u6c42\u90fd\u4f1a\u89e6\u53d1 do \u64cd\u4f5c\u3002\u56e0\u4e3a getdatafromdb \u6267\u884c\u901f\u5ea6\u8fc7\u5feb\uff0c\u5728\u540e\u9762\u7684\u534f\u7a0b\u5230\u8fbe do \u64cd\u4f5c\u65f6\uff0c\u7f13\u5b58\u4e2d\u5df2\u7ecf\u6709\u4e86\u6570\u636e\uff0c\u5bfc\u81f4\u540e\u7eed\u8bf7\u6c42\u4ecd\u7136\u4f1a\u8bbf\u95ee\u6570\u636e\u5e93\u3002,<br \/>\n<strong>\u89e3\u51b3\u65b9\u6848<\/strong>,\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u5728 getdatafromdb \u51fd\u6570\u4e2d\u5f15\u5165\u4e00\u5b9a\u7684\u5ef6\u8fdf\uff0c\u4ee5\u4fdd\u8bc1\u6240\u6709\u5e76\u53d1\u534f\u7a0b\u90fd\u5728\u540c\u65f6\u8fd0\u884c\u65f6\u624d\u4f1a\u8bbf\u95ee\u6570\u636e\u5e93\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728 getdatafromdb \u51fd\u6570\u4e2d\u52a0\u5165\u5982\u4e0b\u4ee3\u7801\uff1a,\u8fd9\u5c06\u4f7f\u6240\u6709\u5e76\u53d1\u534f\u7a0b\u5728\u540c\u65f6\u8fd0\u884c\u65f6\u624d\u8bbf\u95ee\u6570\u636e\u5e93\uff0c\u4ece\u800c\u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\u8fc7\u8f7d\u95ee\u9898\u3002,\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a## \u4f7f\u7528 singleflight \u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\uff1a\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u5f88\u91cd\u8981\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~GOLANG\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03GOLANG\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01,\u5173\u4e8e\u4f7f\u7528 singleflight \u65f6\u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\u7684\u8ba8\u8bba,\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a## \u4f7f\u7528 singleflight \u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\uff1a\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u5f88\u91cd\u8981\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01,<br \/>\n<b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span> <span>## \u4f7f\u7528 singleflight \u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\uff1a\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u5f88\u91cd\u8981\uff1f<\/span><\/p>\n<h1>## \u4f7f\u7528 singleflight \u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\uff1a\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u5f88\u91cd\u8981\uff1f<\/h1>\n<p><span>2024-10-31 16:16:19<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a## \u4f7f\u7528 singleflight \u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\uff1a\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u5f88\u91cd\u8981\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241031\/173036256367233cc37f6e6.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5173\u4e8e\u4f7f\u7528 singleflight \u65f6\u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\u7684\u8ba8\u8bba<\/strong><\/p>\n<p>\u5e76\u53d1\u83b7\u53d6\u6570\u636e\u65f6\uff0c\u4e3a\u4e86\u9632\u6b62\u591a\u4e2a\u8bf7\u6c42\u540c\u65f6\u8bbf\u95ee\u6570\u636e\u5e93\uff0c\u4e00\u79cd\u5e38\u89c1\u7684\u89e3\u51b3\u65b9\u6848\u662f\u4f7f\u7528 singleflight \u5e93\u5b9e\u65bd\u5e76\u53d1\u63a7\u5236\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5728\u4e00\u4e2a\u5b9e\u9645\u573a\u666f\u4e2d\uff0c\u5f53\u4f7f\u7528 singleflight \u65f6\uff0c\u5374\u53d1\u73b0\u5e76\u53d1\u83b7\u53d6\u6570\u636e\u4f9d\u7136\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u8bbf\u95ee\u8fc7\u8f7d\u3002<\/p>\n<p><strong>\u95ee\u9898\u539f\u56e0\u5206\u6790<\/strong><\/p>\n<p>\u6839\u636e\u63d0\u4f9b\u7684\u4ee3\u7801\uff0csingleflight \u7684\u4f7f\u7528\u662f\u5728 getdata \u51fd\u6570\u4e2d\u3002\u8be5\u51fd\u6570\u9996\u5148\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u5982\u679c\u7f13\u5b58\u4e2d\u4e0d\u5b58\u5728\uff0c\u5219\u901a\u8fc7 singleflight \u7684 do \u65b9\u6cd5\u5e76\u53d1\u8bbf\u95ee\u6570\u636e\u5e93\u83b7\u53d6\u6570\u636e\u3002<\/p>\n<p>\u7136\u800c\uff0c\u95ee\u9898\u5728\u4e8e getdatafromdb \u51fd\u6570\u6267\u884c\u901f\u5ea6\u8fc7\u5feb\uff0c\u5f53\u6240\u6709\u5e76\u53d1\u534f\u7a0b\u90fd\u5728\u540c\u65f6\u8fd0\u884c\u65f6\uff0c\u53ea\u6709\u7b2c\u4e00\u4e2a\u8bf7\u6c42\u80fd\u591f\u4ece\u7f13\u5b58\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u5176\u4f59\u8bf7\u6c42\u90fd\u4f1a\u89e6\u53d1 do \u64cd\u4f5c\u3002\u56e0\u4e3a getdatafromdb \u6267\u884c\u901f\u5ea6\u8fc7\u5feb\uff0c\u5728\u540e\u9762\u7684\u534f\u7a0b\u5230\u8fbe do \u64cd\u4f5c\u65f6\uff0c\u7f13\u5b58\u4e2d\u5df2\u7ecf\u6709\u4e86\u6570\u636e\uff0c\u5bfc\u81f4\u540e\u7eed\u8bf7\u6c42\u4ecd\u7136\u4f1a\u8bbf\u95ee\u6570\u636e\u5e93\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u5728 getdatafromdb \u51fd\u6570\u4e2d\u5f15\u5165\u4e00\u5b9a\u7684\u5ef6\u8fdf\uff0c\u4ee5\u4fdd\u8bc1\u6240\u6709\u5e76\u53d1\u534f\u7a0b\u90fd\u5728\u540c\u65f6\u8fd0\u884c\u65f6\u624d\u4f1a\u8bbf\u95ee\u6570\u636e\u5e93\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728 getdatafromdb \u51fd\u6570\u4e2d\u52a0\u5165\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>time.Sleep(time.Millisecond * 500)<\/pre>\n<p>\u8fd9\u5c06\u4f7f\u6240\u6709\u5e76\u53d1\u534f\u7a0b\u5728\u540c\u65f6\u8fd0\u884c\u65f6\u624d\u8bbf\u95ee\u6570\u636e\u5e93\uff0c\u4ece\u800c\u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\u8fc7\u8f7d\u95ee\u9898\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a## \u4f7f\u7528 singleflight \u907f\u514d\u5e76\u53d1\u6570\u636e\u8bbf\u95ee\uff1a\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u5f88\u91cd\u8981\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~GOLANG\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03GOLANG\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u5229\u7528 CSS \u5b9e\u73b0\u9f7f\u72b6\u5706\u73af\u7684 135 \u5ea6\u6e10\u9690\u6548\u679c\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u4f18\u5316\u624b\u673a\u53f7\u6ce8\u518c\u9a8c\u8bc1\u6027\u80fd\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-206007","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206007","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=206007"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206007\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206007"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206007"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206007"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}