{"id":201172,"date":"2020-11-24T15:28:09","date_gmt":"2020-11-24T07:28:09","guid":{"rendered":"http:\/\/4563.org\/?p=201172"},"modified":"2020-11-24T15:28:09","modified_gmt":"2020-11-24T07:28:09","slug":"%e7%86%94%e6%96%ad%e5%8e%9f%e7%90%86%e4%b8%8e%e5%ae%9e%e7%8e%b0-golang-%e7%89%88","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=201172","title":{"rendered":"\u7194\u65ad\u539f\u7406\u4e0e\u5b9e\u73b0 Golang \u7248"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u7194\u65ad\u539f\u7406\u4e0e\u5b9e\u73b0 Golang \u7248               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : kevinwan <\/span>  <span><i><\/i> 4<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u5728\u5fae\u670d\u52a1\u4e2d\u670d\u52a1\u95f4\u4f9d\u8d56\u975e\u5e38\u5e38\u89c1\uff0c\u6bd4\u5982\u8bc4\u8bba\u670d\u52a1\u4f9d\u8d56\u5ba1\u6838\u670d\u52a1\u800c\u5ba1\u6838\u670d\u52a1\u53c8\u4f9d\u8d56\u53cd\u5783\u573e\u670d\u52a1\uff0c\u5f53\u8bc4\u8bba\u670d\u52a1\u8c03\u7528\u5ba1\u6838\u670d\u52a1\u65f6\uff0c\u5ba1\u6838\u670d\u52a1\u53c8\u8c03\u7528\u53cd\u5783\u573e\u670d\u52a1\uff0c\u800c\u8fd9\u65f6\u53cd\u5783\u573e\u670d\u52a1\u8d85\u65f6\u4e86\uff0c\u7531\u4e8e\u5ba1\u6838\u670d\u52a1\u4f9d\u8d56\u53cd\u5783\u573e\u670d\u52a1\uff0c\u53cd\u5783\u573e\u670d\u52a1\u8d85\u65f6\u5bfc\u81f4\u5ba1\u6838\u670d\u52a1\u903b\u8f91\u4e00\u76f4\u7b49\u5f85\uff0c\u800c\u8fd9\u4e2a\u65f6\u5019\u8bc4\u8bba\u670d\u52a1\u53c8\u5728\u4e00\u76f4\u8c03\u7528\u5ba1\u6838\u670d\u52a1\uff0c\u5ba1\u6838\u670d\u52a1\u5c31\u6709\u53ef\u80fd\u56e0\u4e3a\u5806\u79ef\u4e86\u5927\u91cf\u8bf7\u6c42\u800c\u5bfc\u81f4\u670d\u52a1\u5b95\u673a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/20201125_5fbdfb77a9790.png\" alt=\"\u7194\u65ad\u539f\u7406\u4e0e\u5b9e\u73b0 Golang \u7248\" \/><\/p>\n<p>\u7531\u6b64\u53ef\u89c1\uff0c\u5728\u6574\u4e2a\u8c03\u7528\u94fe\u4e2d\uff0c\u4e2d\u95f4\u7684\u67d0\u4e00\u4e2a\u73af\u8282\u51fa\u73b0\u5f02\u5e38\u5c31\u4f1a\u5f15\u8d77\u4e0a\u6e38\u8c03\u7528\u670d\u52a1\u51fa\u73b0\u4e00\u4e9b\u5217\u7684\u95ee\u9898\uff0c\u751a\u81f3\u5bfc\u81f4\u6574\u4e2a\u8c03\u7528\u94fe\u7684\u670d\u52a1\u90fd\u5b95\u673a\uff0c\u8fd9\u662f\u975e\u5e38\u53ef\u6015\u7684\u3002\u56e0\u6b64\u4e00\u4e2a\u670d\u52a1\u4f5c\u4e3a\u8c03\u7528\u65b9\u8c03\u7528\u53e6\u4e00\u4e2a\u670d\u52a1\u65f6\uff0c\u4e3a\u4e86\u9632\u6b62\u88ab\u8c03\u7528\u670d\u52a1\u51fa\u73b0\u95ee\u9898\u8fdb\u800c\u5bfc\u81f4\u8c03\u7528\u670d\u52a1\u51fa\u73b0\u95ee\u9898\uff0c\u6240\u4ee5\u8c03\u7528\u670d\u52a1\u9700\u8981\u8fdb\u884c\u81ea\u6211\u4fdd\u62a4\uff0c\u800c\u4fdd\u62a4\u7684\u5e38\u7528\u624b\u6bb5\u5c31\u662f***\u7194\u65ad***<\/p>\n<h3>\u7194\u65ad\u5668\u539f\u7406<\/h3>\n<p>\u7194\u65ad\u673a\u5236\u5176\u5b9e\u662f\u53c2\u8003\u4e86\u6211\u4eec\u65e5\u5e38\u751f\u6d3b\u4e2d\u7684\u4fdd\u9669\u4e1d\u7684\u4fdd\u62a4\u673a\u5236\uff0c\u5f53\u7535\u8def\u8d85\u8d1f\u8377\u8fd0\u884c\u65f6\uff0c\u4fdd\u9669\u4e1d\u4f1a\u81ea\u52a8\u7684\u65ad\u5f00\uff0c\u4ece\u800c\u4fdd\u8bc1\u7535\u8def\u4e2d\u7684\u7535\u5668\u4e0d\u53d7\u635f\u5bb3\u3002\u800c\u670d\u52a1\u6cbb\u7406\u4e2d\u7684\u7194\u65ad\u673a\u5236\uff0c\u6307\u7684\u662f\u5728\u53d1\u8d77\u670d\u52a1\u8c03\u7528\u7684\u65f6\u5019\uff0c\u5982\u679c\u88ab\u8c03\u7528\u65b9\u8fd4\u56de\u7684\u9519\u8bef\u7387\u8d85\u8fc7\u4e00\u5b9a\u7684\u9608\u503c\uff0c\u90a3\u4e48\u540e\u7eed\u7684\u8bf7\u6c42\u5c06\u4e0d\u4f1a\u771f\u6b63\u53d1\u8d77\u8bf7\u6c42\uff0c\u800c\u662f\u5728\u8c03\u7528\u65b9\u76f4\u63a5\u8fd4\u56de\u9519\u8bef<\/p>\n<p>\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u670d\u52a1\u8c03\u7528\u65b9\u4e3a\u6bcf\u4e00\u4e2a\u8c03\u7528\u670d\u52a1(\u8c03\u7528\u8def\u5f84)\u7ef4\u62a4\u4e00\u4e2a\u72b6\u6001\u673a\uff0c\u5728\u8fd9\u4e2a\u72b6\u6001\u673a\u4e2d\u6709\u4e09\u4e2a\u72b6\u6001\uff1a<\/p>\n<ul>\n<li>\u5173\u95ed(Closed)\uff1a\u5728\u8fd9\u79cd\u72b6\u6001\u4e0b\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u8ba1\u6570\u5668\u6765\u8bb0\u5f55\u8c03\u7528\u5931\u8d25\u7684\u6b21\u6570\u548c\u603b\u7684\u8bf7\u6c42\u6b21\u6570\uff0c\u5982\u679c\u5728\u67d0\u4e2a\u65f6\u95f4\u7a97\u53e3\u5185\uff0c\u5931\u8d25\u7684\u5931\u8d25\u7387\u8fbe\u5230\u9884\u8bbe\u7684\u9608\u503c\uff0c\u5219\u5207\u6362\u5230\u65ad\u5f00\u72b6\u6001\uff0c\u6b64\u65f6\u5f00\u542f\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u5f53\u5230\u8fbe\u8be5\u65f6\u95f4\u5219\u5207\u6362\u5230\u534a\u5173\u95ed\u72b6\u6001\uff0c\u8be5\u8d85\u65f6\u65f6\u95f4\u662f\u7ed9\u4e86\u7cfb\u7edf\u4e00\u6b21\u673a\u4f1a\u6765\u4fee\u6b63\u5bfc\u81f4\u8c03\u7528\u5931\u8d25\u7684\u9519\u8bef\uff0c\u4ee5\u56de\u5230\u6b63\u5e38\u7684\u5de5\u4f5c\u72b6\u6001\u3002\u5728\u5173\u95ed\u72b6\u6001\u4e0b\uff0c\u8c03\u7528\u9519\u8bef\u662f\u57fa\u4e8e\u65f6\u95f4\u7684\uff0c\u5728\u7279\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u5185\u4f1a\u91cd\u7f6e\uff0c\u8fd9\u80fd\u591f\u9632\u6b62\u5076\u7136\u9519\u8bef\u5bfc\u81f4\u7194\u65ad\u5668\u8fdb\u53bb\u65ad\u5f00\u72b6\u6001<\/li>\n<li>\u6253\u5f00(Open)\uff1a\u5728\u8be5\u72b6\u6001\u4e0b\uff0c\u53d1\u8d77\u8bf7\u6c42\u65f6\u4f1a\u7acb\u5373\u8fd4\u56de\u9519\u8bef\uff0c\u4e00\u822c\u4f1a\u542f\u52a8\u4e00\u4e2a\u8d85\u65f6\u8ba1\u65f6\u5668\uff0c\u5f53\u8ba1\u65f6\u5668\u8d85\u65f6\u540e\uff0c\u72b6\u6001\u5207\u6362\u5230\u534a\u6253\u5f00\u72b6\u6001\uff0c\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u5b9a\u671f\u7684\u63a2\u6d4b\u670d\u52a1\u662f\u5426\u6062\u590d<\/li>\n<li>\u534a\u6253\u5f00(Half-Open)\uff1a\u5728\u8be5\u72b6\u6001\u4e0b\uff0c\u5141\u8bb8\u5e94\u7528\u7a0b\u5e8f\u4e00\u5b9a\u6570\u91cf\u7684\u8bf7\u6c42\u53d1\u5f80\u88ab\u8c03\u7528\u670d\u52a1\uff0c\u5982\u679c\u8fd9\u4e9b\u8c03\u7528\u6b63\u5e38\uff0c\u90a3\u4e48\u53ef\u4ee5\u8ba4\u4e3a\u88ab\u8c03\u7528\u670d\u52a1\u5df2\u7ecf\u6062\u590d\u6b63\u5e38\uff0c\u6b64\u65f6\u7194\u65ad\u5668\u5207\u6362\u5230\u5173\u95ed\u72b6\u6001\uff0c\u540c\u65f6\u9700\u8981\u91cd\u7f6e\u8ba1\u6570\u3002\u5982\u679c\u8fd9\u90e8\u5206\u4ecd\u6709\u8c03\u7528\u5931\u8d25\u7684\u60c5\u51b5\uff0c\u5219\u8ba4\u4e3a\u88ab\u8c03\u7528\u65b9\u4ecd\u7136\u6ca1\u6709\u6062\u590d\uff0c\u7194\u65ad\u5668\u4f1a\u5207\u6362\u5230\u5173\u95ed\u72b6\u6001\uff0c\u7136\u540e\u91cd\u7f6e\u8ba1\u6570\u5668\uff0c\u534a\u6253\u5f00\u72b6\u6001\u80fd\u591f\u6709\u6548\u9632\u6b62\u6b63\u5728\u6062\u590d\u4e2d\u7684\u670d\u52a1\u88ab\u7a81\u7136\u5927\u91cf\u8bf7\u6c42\u518d\u6b21\u6253\u57ae<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/20201125_5fbdfb7e4c3d3.png\" alt=\"\u7194\u65ad\u539f\u7406\u4e0e\u5b9e\u73b0 Golang \u7248\" \/><\/p>\n<p>\u670d\u52a1\u6cbb\u7406\u4e2d\u5f15\u5165\u7194\u65ad\u673a\u5236\uff0c\u4f7f\u5f97\u7cfb\u7edf\u66f4\u52a0\u7a33\u5b9a\u548c\u6709\u5f39\u6027\uff0c\u5728\u7cfb\u7edf\u4ece\u9519\u8bef\u4e2d\u6062\u590d\u7684\u65f6\u5019\u63d0\u4f9b\u7a33\u5b9a\u6027\uff0c\u5e76\u4e14\u51cf\u5c11\u4e86\u9519\u8bef\u5bf9\u7cfb\u7edf\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u53ef\u4ee5\u5feb\u901f\u62d2\u7edd\u53ef\u80fd\u5bfc\u81f4\u9519\u8bef\u7684\u670d\u52a1\u8c03\u7528\uff0c\u800c\u4e0d\u9700\u8981\u7b49\u5f85\u771f\u6b63\u7684\u9519\u8bef\u8fd4\u56de<\/p>\n<h3>\u7194\u65ad\u5668\u5f15\u5165<\/h3>\n<p>\u4e0a\u9762\u4ecb\u7ecd\u4e86\u7194\u65ad\u5668\u7684\u539f\u7406\uff0c\u5728\u4e86\u89e3\u5b8c\u539f\u7406\u540e\uff0c\u4f60\u662f\u5426\u6709\u601d\u8003\u6211\u4eec\u5982\u4f55\u5f15\u5165\u7194\u65ad\u5668\u5462\uff1f\u4e00\u79cd\u65b9\u6848\u662f\u5728\u4e1a\u52a1\u903b\u8f91\u4e2d\u53ef\u4ee5\u52a0\u5165\u7194\u65ad\u5668\uff0c\u4f46\u663e\u7136\u662f\u4e0d\u591f\u4f18\u96c5\u4e5f\u4e0d\u591f\u901a\u7528\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u628a\u7194\u65ad\u5668\u96c6\u6210\u5728\u6846\u67b6\u5185\uff0c\u5728zRPC\u6846\u67b6\u5185\u5c31\u5185\u7f6e\u4e86\u7194\u65ad\u5668<\/p>\n<p>\u6211\u4eec\u77e5\u9053\uff0c\u7194\u65ad\u5668\u4e3b\u8981\u662f\u7528\u6765\u4fdd\u62a4\u8c03\u7528\u7aef\uff0c\u8c03\u7528\u7aef\u5728\u53d1\u8d77\u8bf7\u6c42\u7684\u65f6\u5019\u9700\u8981\u5148\u7ecf\u8fc7\u7194\u65ad\u5668\uff0c\u800c\u5ba2\u6237\u7aef\u62e6\u622a\u5668\u6b63\u597d\u517c\u5177\u4e86\u8fd9\u4e2a\u8fd9\u4e2a\u529f\u80fd\uff0c\u6240\u4ee5\u5728 zRPC \u6846\u67b6\u5185\u7194\u65ad\u5668\u662f\u5b9e\u73b0\u5728\u5ba2\u6237\u7aef\u62e6\u622a\u5668\u5185\uff0c\u62e6\u622a\u5668\u7684\u539f\u7406\u5982\u4e0b\u56fe\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/20201125_5fbdfb850c40c.png\" alt=\"\u7194\u65ad\u539f\u7406\u4e0e\u5b9e\u73b0 Golang \u7248\" \/><\/p>\n<p>\u5bf9\u5e94\u7684\u4ee3\u7801\u4e3a\uff1a<\/p>\n<pre><code>func BreakerInterceptor(ctx context.Context, method string, req, reply interface{},  cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {  \/\/ \u57fa\u4e8e\u8bf7\u6c42\u65b9\u6cd5\u8fdb\u884c\u7194\u65ad  breakerName := path.Join(cc.Target(), method)  return breaker.DoWithAcceptable(breakerName, func() error {   \/\/ \u771f\u6b63\u53d1\u8d77\u8c03\u7528   return invoker(ctx, method, req, reply, cc, opts...)  \/\/ codes.Acceptable \u5224\u65ad\u54ea\u79cd\u9519\u8bef\u9700\u8981\u52a0\u5165\u7194\u65ad\u9519\u8bef\u8ba1\u6570  }, codes.Acceptable) } <\/code><\/pre>\n<h3>\u7194\u65ad\u5668\u5b9e\u73b0<\/h3>\n<p>zRPC \u4e2d\u7194\u65ad\u5668\u7684\u5b9e\u73b0\u53c2\u8003\u4e86Google SRE \u8fc7\u8f7d\u4fdd\u62a4\u7b97\u6cd5\uff0c\u8be5\u7b97\u6cd5\u7684\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u8bf7\u6c42\u6570\u91cf(requests)\uff1a\u8c03\u7528\u65b9\u53d1\u8d77\u8bf7\u6c42\u7684\u6570\u91cf\u603b\u548c<\/li>\n<li>\u8bf7\u6c42\u63a5\u53d7\u6570\u91cf(accepts)\uff1a\u88ab\u8c03\u7528\u65b9\u6b63\u5e38\u5904\u7406\u7684\u8bf7\u6c42\u6570\u91cf<\/li>\n<\/ul>\n<p>\u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e24\u4e2a\u503c\u662f\u76f8\u7b49\u7684\uff0c\u968f\u7740\u88ab\u8c03\u7528\u65b9\u670d\u52a1\u51fa\u73b0\u5f02\u5e38\u5f00\u59cb\u62d2\u7edd\u8bf7\u6c42\uff0c\u8bf7\u6c42\u63a5\u53d7\u6570\u91cf(accepts)\u7684\u503c\u5f00\u59cb\u9010\u6e10\u5c0f\u4e8e\u8bf7\u6c42\u6570\u91cf(requests)\uff0c\u8fd9\u4e2a\u65f6\u5019\u8c03\u7528\u65b9\u53ef\u4ee5\u7ee7\u7eed\u53d1\u9001\u8bf7\u6c42\uff0c\u76f4\u5230 requests = K * accepts\uff0c\u4e00\u65e6\u8d85\u8fc7\u8fd9\u4e2a\u9650\u5236\uff0c\u7194\u65ad\u5668\u5c31\u56de\u6253\u5f00\uff0c\u65b0\u7684\u8bf7\u6c42\u4f1a\u5728\u672c\u5730\u4ee5\u4e00\u5b9a\u7684\u6982\u7387\u88ab\u629b\u5f03\u76f4\u63a5\u8fd4\u56de\u9519\u8bef\uff0c\u6982\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/20201125_5fbdfb8aa7f94.png\" alt=\"\u7194\u65ad\u539f\u7406\u4e0e\u5b9e\u73b0 Golang \u7248\" \/><\/p>\n<p>\u901a\u8fc7\u4fee\u6539\u7b97\u6cd5\u4e2d\u7684 K(\u500d\u503c)\uff0c\u53ef\u4ee5\u8c03\u8282\u7194\u65ad\u5668\u7684\u654f\u611f\u5ea6\uff0c\u5f53\u964d\u4f4e\u8be5\u500d\u503c\u4f1a\u4f7f\u81ea\u9002\u5e94\u7194\u65ad\u7b97\u6cd5\u66f4\u654f\u611f\uff0c\u5f53\u589e\u52a0\u8be5\u500d\u503c\u4f1a\u4f7f\u5f97\u81ea\u9002\u5e94\u7194\u65ad\u7b97\u6cd5\u964d\u4f4e\u654f\u611f\u5ea6\uff0c\u4e3e\u4f8b\u6765\u8bf4\uff0c\u5047\u8bbe\u5c06\u8c03\u7528\u65b9\u7684\u8bf7\u6c42\u4e0a\u9650\u4ece requests = 2 * acceptst \u8c03\u6574\u4e3a requests = 1.1 * accepts \u90a3\u4e48\u5c31\u610f\u5473\u7740\u8c03\u7528\u65b9\u6bcf\u5341\u4e2a\u8bf7\u6c42\u4e4b\u4e2d\u5c31\u6709\u4e00\u4e2a\u8bf7\u6c42\u4f1a\u89e6\u53d1\u7194\u65ad<\/p>\n<p>\u4ee3\u7801\u8def\u5f84\u4e3a go-zero\/core\/breaker<\/p>\n<pre><code>type googleBreaker struct {  k     float64  \/\/ \u500d\u503c \u9ed8\u8ba4 1.5  stat  *collection.RollingWindow \/\/ \u6ed1\u52a8\u65f6\u95f4\u7a97\u53e3\uff0c\u7528\u6765\u5bf9\u8bf7\u6c42\u5931\u8d25\u548c\u6210\u529f\u8ba1\u6570  proba *mathx.Proba \/\/ \u52a8\u6001\u6982\u7387 } <\/code><\/pre>\n<p>\u81ea\u9002\u5e94\u7194\u65ad\u7b97\u6cd5\u5b9e\u73b0<\/p>\n<pre><code>func (b *googleBreaker) accept() error {  accepts, total := b.history()  \/\/ \u8bf7\u6c42\u63a5\u53d7\u6570\u91cf\u548c\u8bf7\u6c42\u603b\u91cf  weightedAccepts := b.k * float64(accepts)  \/\/ \u8ba1\u7b97\u4e22\u5f03\u8bf7\u6c42\u6982\u7387  dropRatio := math.Max(0, (float64(total-protection)-weightedAccepts)\/float64(total+1))  if dropRatio &lt;= 0 {   return nil  }  \/\/ \u52a8\u6001\u5224\u65ad\u662f\u5426\u89e6\u53d1\u7194\u65ad  if b.proba.TrueOnProba(dropRatio) {   return ErrServiceUnavailable  }   return nil } <\/code><\/pre>\n<p>\u6bcf\u6b21\u53d1\u8d77\u8bf7\u6c42\u4f1a\u8c03\u7528 doReq \u65b9\u6cd5\uff0c\u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\u9996\u5148\u901a\u8fc7 accept \u6548\u9a8c\u662f\u5426\u89e6\u53d1\u7194\u65ad\uff0cacceptable \u7528\u6765\u5224\u65ad\u54ea\u4e9b error \u4f1a\u8ba1\u5165\u5931\u8d25\u8ba1\u6570\uff0c\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n<pre><code>func Acceptable(err error) bool {  switch status.Code(err) {  case codes.DeadlineExceeded, codes.Internal, codes.Unavailable, codes.DataLoss: \/\/ \u5f02\u5e38\u8bf7\u6c42\u9519\u8bef   return false  default:   return true  } } <\/code><\/pre>\n<p>\u5982\u679c\u8bf7\u6c42\u6b63\u5e38\u5219\u901a\u8fc7 markSuccess \u628a\u8bf7\u6c42\u6570\u91cf\u548c\u8bf7\u6c42\u63a5\u53d7\u6570\u91cf\u90fd\u52a0\u4e00\uff0c\u5982\u679c\u8bf7\u6c42\u4e0d\u6b63\u5e38\u5219\u53ea\u6709\u8bf7\u6c42\u6570\u91cf\u4f1a\u52a0\u4e00<\/p>\n<pre><code>func (b *googleBreaker) doReq(req func() error, fallback func(err error) error, acceptable Acceptable) error {  \/\/ \u5224\u65ad\u662f\u5426\u89e6\u53d1\u7194\u65ad  if err := b.accept(); err != nil {   if fallback != nil {    return fallback(err)   } else {    return err   }  }   defer func() {   if e := recover(); e != nil {    b.markFailure()    panic(e)   }  }()   \/\/ \u6267\u884c\u771f\u6b63\u7684\u8c03\u7528  err := req()  \/\/ \u6b63\u5e38\u8bf7\u6c42\u8ba1\u6570  if acceptable(err) {   b.markSuccess()  } else {   \/\/ \u5f02\u5e38\u8bf7\u6c42\u8ba1\u6570   b.markFailure()  }   return err } <\/code><\/pre>\n<h3>\u603b\u7ed3<\/h3>\n<p>\u8c03\u7528\u7aef\u53ef\u4ee5\u901a\u8fc7\u7194\u65ad\u673a\u5236\u8fdb\u884c\u81ea\u6211\u4fdd\u62a4\uff0c\u9632\u6b62\u8c03\u7528\u4e0b\u6e38\u670d\u52a1\u51fa\u73b0\u5f02\u5e38\uff0c\u6216\u8005\u8017\u65f6\u8fc7\u957f\u5f71\u54cd\u8c03\u7528\u7aef\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u5f88\u591a\u529f\u80fd\u5b8c\u6574\u7684\u5fae\u670d\u52a1\u6846\u67b6\u90fd\u4f1a\u5185\u7f6e\u7194\u65ad\u5668\u3002\u5176\u5b9e\uff0c\u4e0d\u4ec5\u5fae\u670d\u52a1\u8c03\u7528\u4e4b\u95f4\u9700\u8981\u7194\u65ad\u5668\uff0c\u5728\u8c03\u7528\u4f9d\u8d56\u8d44\u6e90\u7684\u65f6\u5019\uff0c\u6bd4\u5982 mysql \u3001redis \u7b49\u4e5f\u53ef\u4ee5\u5f15\u5165\u7194\u65ad\u5668\u7684\u673a\u5236\u3002<\/p>\n<h3>\u9879\u76ee\u5730\u5740<\/h3>\n<p>https:\/\/github.com\/tal-tech\/go-zero<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>0<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u7194\u65ad\u539f\u7406\u4e0e\u5b9e\u73b0 Golang \u7248 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/201172"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=201172"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/201172\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=201172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=201172"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=201172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}