{"id":206214,"date":"2025-06-12T10:11:57","date_gmt":"2025-06-12T02:11:57","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206214\/"},"modified":"2025-06-12T10:11:57","modified_gmt":"2025-06-12T02:11:57","slug":"singleflight-do-%e4%b8%ad%e7%9a%84-shared-%e5%8f%82%e6%95%b0%e4%b8%ba%e4%bb%80%e4%b9%88%e6%80%bb%e6%98%af%e4%b8%ba-true%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206214\/","title":{"rendered":"## Singleflight.Do \u4e2d\u7684 shared \u53c2\u6570\u4e3a\u4ec0\u4e48\u603b\u662f\u4e3a true\uff1f"},"content":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a## Singleflight.Do \u4e2d\u7684 shared \u53c2\u6570\u4e3a\u4ec0\u4e48\u603b\u662f\u4e3a true\uff1f\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">GOLANG<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">GOLANG<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241106\/1730883111672b2e276c782.jpg\" class=\"aligncenter\">,<br \/>\n<strong>singleflight.Do \u7684 Shared \u53c2\u6570\u59cb\u7ec8\u4e3a true<\/strong>,singleflight \u662f GOLANG \u4e2d\u4e00\u4e2a\u7528\u4e8e\u9632\u6b62\u5e76\u53d1\u8c03\u7528\u76f8\u540c\u51fd\u6570\u7684\u5e76\u53d1\u5e93\u3002\u5b83\u7684 Do \u65b9\u6cd5\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff0c\u5176\u4e2d\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u5e03\u5c14\u503c shared\uff0c\u8868\u793a\u7ed3\u679c\u662f\u5426\u4e0e\u5176\u4ed6\u8c03\u7528\u8005\u5171\u4eab\u3002,\u5728\u4e4b\u524d\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0c\u60a8\u6ce8\u610f\u5230 shared \u53c2\u6570\u59cb\u7ec8\u8fd4\u56de true\u3002\u8fd9\u662f\u56e0\u4e3a\u60a8\u5bf9\u5355\u98de\u884c\u7ec4\u8fdb\u884c\u4e86\u591a\u4e2a\u5e76\u53d1\u8c03\u7528\uff0c\u5e76\u4e14\u6240\u6709\u8c03\u7528\u8005\u90fd\u83b7\u5f97\u4e86\u76f8\u540c\u7684\u7ed3\u679c\u3002,<br \/>\n<strong>\u4e3a\u4ec0\u4e48 shared \u59cb\u7ec8\u4e3a true\uff1f<\/strong>,\u6839\u636e singleflight \u6587\u6863\uff0cshared \u4ec5\u5728\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\u65f6\u624d\u4e3a false\uff1a,\u5728\u60a8\u7684\u793a\u4f8b\u4e2d\uff0c\u7531\u4e8e\u60a8\u6709\u591a\u4e2a\u5e76\u53d1\u8c03\u7528\uff0c\u56e0\u6b64\u5728\u4efb\u4f55\u7ed9\u5b9a\u8c03\u7528\u671f\u95f4\uff0c\u59cb\u7ec8\u6709\u53e6\u4e00\u4e2a\u534f\u7a0b\u4e5f\u5728\u6267\u884c Do \u65b9\u6cd5\u3002\u8fd9\u610f\u5473\u7740 val \u603b\u662f\u88ab\u591a\u4e2a\u8c03\u7528\u8005\u5171\u4eab\uff0c\u56e0\u6b64 shared \u53c2\u6570\u59cb\u7ec8\u4e3a true\u3002,<br \/>\n<strong>\u6839\u636e\u9884\u671f\uff0c\u5e94\u8be5\u81f3\u5c11\u6709\u4e00\u4e2a shared \u4e3a false<\/strong>,\u60a8\u7684\u5047\u8bbe\u662f\uff0c\u5e94\u8be5\u81f3\u5c11\u6709\u4e00\u4e2a shared \u4e3a false \u7684\u8c03\u7528\u3002\u8fd9\u662f\u9519\u8bef\u7684\u3002\u7531\u4e8e Do \u65b9\u6cd5\u7684\u6240\u6709\u5e76\u53d1\u8c03\u7528\u540c\u65f6\u6267\u884c\uff0c\u56e0\u6b64\u4efb\u4f55\u8c03\u7528\u8005\u90fd\u4e0d\u4f1a\u72ec\u5360 val\uff0c\u8fd9\u610f\u5473\u7740 shared \u59cb\u7ec8\u4e3a true\u3002,\u603b\u4e4b\uff0c\u5982\u679c\u6240\u6709\u5e76\u53d1\u8c03\u7528\u8005\u90fd\u5171\u4eab\u7ed3\u679c\uff0csingleflight.Do \u7684 shared \u53c2\u6570\u5c06\u59cb\u7ec8\u4e3a true\u3002\u5f53\u4e14\u4ec5\u5f53\u5176\u4e2d\u4e00\u4e2a\u8c03\u7528\u8005\u7684\u534f\u7a0b\u6267\u884c Do \u65b9\u6cd5\u65f6\uff0c\u5176\u4ed6\u534f\u7a0b\u4e0d\u6267\u884c\u8be5\u534f\u7a0b\u65f6\uff0cshared \u53c2\u6570\u624d\u4f1a\u4e3a false\u3002,\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a## Singleflight.Do \u4e2d\u7684 shared \u53c2\u6570\u4e3a\u4ec0\u4e48\u603b\u662f\u4e3a true\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u5427\uff01,\u8c03\u7528\u8005\u534f\u7a0b\u6267\u884c Do \u65b9\u6cd5\u65f6\uff0c\u6ca1\u6709\u4efb\u4f55\u5176\u4ed6\u534f\u7a0b\u4e5f\u5728\u6267\u884c\u8be5\u534f\u7a0b\u3002,singleflight.Do \u7684 Shared \u53c2\u6570\u59cb\u7ec8\u4e3a true,\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a## Singleflight.Do \u4e2d\u7684 shared \u53c2\u6570\u4e3a\u4ec0\u4e48\u603b\u662f\u4e3a true\uff1f\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">GOLANG<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">GOLANG<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~,<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>## Singleflight.Do \u4e2d\u7684 shared \u53c2\u6570\u4e3a\u4ec0\u4e48\u603b\u662f\u4e3a true\uff1f<\/span><\/p>\n<h1>## Singleflight.Do \u4e2d\u7684 shared \u53c2\u6570\u4e3a\u4ec0\u4e48\u603b\u662f\u4e3a true\uff1f<\/h1>\n<p><span>2024-11-06 16:52:06<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a## Singleflight.Do \u4e2d\u7684 shared \u53c2\u6570\u4e3a\u4ec0\u4e48\u603b\u662f\u4e3a true\uff1f\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">GOLANG<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">GOLANG<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241106\/1730883111672b2e276c782.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>singleflight.Do \u7684 Shared \u53c2\u6570\u59cb\u7ec8\u4e3a true<\/strong><\/p>\n<p>singleflight \u662f GOLANG \u4e2d\u4e00\u4e2a\u7528\u4e8e\u9632\u6b62\u5e76\u53d1\u8c03\u7528\u76f8\u540c\u51fd\u6570\u7684\u5e76\u53d1\u5e93\u3002\u5b83\u7684 Do \u65b9\u6cd5\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff0c\u5176\u4e2d\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u5e03\u5c14\u503c shared\uff0c\u8868\u793a\u7ed3\u679c\u662f\u5426\u4e0e\u5176\u4ed6\u8c03\u7528\u8005\u5171\u4eab\u3002<\/p>\n<p>\u5728\u4e4b\u524d\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0c\u60a8\u6ce8\u610f\u5230 shared \u53c2\u6570\u59cb\u7ec8\u8fd4\u56de true\u3002\u8fd9\u662f\u56e0\u4e3a\u60a8\u5bf9\u5355\u98de\u884c\u7ec4\u8fdb\u884c\u4e86\u591a\u4e2a\u5e76\u53d1\u8c03\u7528\uff0c\u5e76\u4e14\u6240\u6709\u8c03\u7528\u8005\u90fd\u83b7\u5f97\u4e86\u76f8\u540c\u7684\u7ed3\u679c\u3002<\/p>\n<p><strong>\u4e3a\u4ec0\u4e48 shared \u59cb\u7ec8\u4e3a true\uff1f<\/strong><\/p>\n<p>\u6839\u636e singleflight \u6587\u6863\uff0cshared \u4ec5\u5728\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\u65f6\u624d\u4e3a false\uff1a<\/p>\n<ul>\n<li>\u8c03\u7528\u8005\u534f\u7a0b\u6267\u884c Do \u65b9\u6cd5\u65f6\uff0c\u6ca1\u6709\u4efb\u4f55\u5176\u4ed6\u534f\u7a0b\u4e5f\u5728\u6267\u884c\u8be5\u534f\u7a0b\u3002<\/li>\n<\/ul>\n<p>\u5728\u60a8\u7684\u793a\u4f8b\u4e2d\uff0c\u7531\u4e8e\u60a8\u6709\u591a\u4e2a\u5e76\u53d1\u8c03\u7528\uff0c\u56e0\u6b64\u5728\u4efb\u4f55\u7ed9\u5b9a\u8c03\u7528\u671f\u95f4\uff0c\u59cb\u7ec8\u6709\u53e6\u4e00\u4e2a\u534f\u7a0b\u4e5f\u5728\u6267\u884c Do \u65b9\u6cd5\u3002\u8fd9\u610f\u5473\u7740 val \u603b\u662f\u88ab\u591a\u4e2a\u8c03\u7528\u8005\u5171\u4eab\uff0c\u56e0\u6b64 shared \u53c2\u6570\u59cb\u7ec8\u4e3a true\u3002<\/p>\n<p><strong>\u6839\u636e\u9884\u671f\uff0c\u5e94\u8be5\u81f3\u5c11\u6709\u4e00\u4e2a shared \u4e3a false<\/strong><\/p>\n<p>\u60a8\u7684\u5047\u8bbe\u662f\uff0c\u5e94\u8be5\u81f3\u5c11\u6709\u4e00\u4e2a shared \u4e3a false \u7684\u8c03\u7528\u3002\u8fd9\u662f\u9519\u8bef\u7684\u3002\u7531\u4e8e Do \u65b9\u6cd5\u7684\u6240\u6709\u5e76\u53d1\u8c03\u7528\u540c\u65f6\u6267\u884c\uff0c\u56e0\u6b64\u4efb\u4f55\u8c03\u7528\u8005\u90fd\u4e0d\u4f1a\u72ec\u5360 val\uff0c\u8fd9\u610f\u5473\u7740 shared \u59cb\u7ec8\u4e3a true\u3002<\/p>\n<p>\u603b\u4e4b\uff0c\u5982\u679c\u6240\u6709\u5e76\u53d1\u8c03\u7528\u8005\u90fd\u5171\u4eab\u7ed3\u679c\uff0csingleflight.Do \u7684 shared \u53c2\u6570\u5c06\u59cb\u7ec8\u4e3a true\u3002\u5f53\u4e14\u4ec5\u5f53\u5176\u4e2d\u4e00\u4e2a\u8c03\u7528\u8005\u7684\u534f\u7a0b\u6267\u884c Do \u65b9\u6cd5\u65f6\uff0c\u5176\u4ed6\u534f\u7a0b\u4e0d\u6267\u884c\u8be5\u534f\u7a0b\u65f6\uff0cshared \u53c2\u6570\u624d\u4f1a\u4e3a false\u3002<\/p>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a## Singleflight.Do \u4e2d\u7684 shared \u53c2\u6570\u4e3a\u4ec0\u4e48\u603b\u662f\u4e3a true\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   ## \u4e00\u5343\u4e07\u6761\u6570\u636e\uff01\u5982\u4f55\u8ba9 MySQL \u6a21\u7cca\u641c\u7d22\u5feb\u5982\u95ea\u7535\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u4e3a\u4ec0\u4e48checkbox\u65e0\u6cd5\u5168\u90e8\u9009\u4e2d\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587 \u300a&#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-206214","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206214","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=206214"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206214\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}