{"id":207404,"date":"2025-07-08T08:45:41","date_gmt":"2025-07-08T00:45:41","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207404\/"},"modified":"2025-07-08T08:45:41","modified_gmt":"2025-07-08T00:45:41","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-golang-%e4%b8%ad%e7%9a%84%e6%b5%81%e4%b8%8a%e5%8f%91%e9%80%81%e6%95%b0%e6%8d%ae%e6%97%b6%e4%bd%bf%e5%b7%a5%e4%bd%9c%e5%b9%b6%e5%8f%91%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207404\/","title":{"rendered":"\u5982\u4f55\u5728 golang \u4e2d\u7684\u6d41\u4e0a\u53d1\u9001\u6570\u636e\u65f6\u4f7f\u5de5\u4f5c\u5e76\u53d1\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u5728 golang \u4e2d\u7684\u6d41\u4e0a\u53d1\u9001\u6570\u636e\u65f6\u4f7f\u5de5\u4f5c\u5e76\u53d1\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-22 12:27:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\u300a\u5982\u4f55\u5728 golang \u4e2d\u7684\u6d41\u4e0a\u53d1\u9001\u6570\u636e\u65f6\u4f7f\u5de5\u4f5c\u5e76\u53d1\uff1f\u300b<\/span>\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684\u77e5\u8bc6\u70b9\u5305\u62ec<\/span>\u7b49\u7b49\uff0c\u65e0\u8bba\u4f60\u662f\u5c0f\u767d\u8fd8\u662f\u8001\u624b\uff0c\u90fd\u9002\u5408\u770b\u4e00\u770b\u54e6~\u6709\u597d\u7684\u5efa\u8bae\u4e5f\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u82e5\u662f\u770b\u5b8c\u6709\u6240\u6536\u83b7\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u70b9\u8d5e\u652f\u6301\u5440\uff01\u4e00\u8d77\u52a0\u6cb9\u5b66\u4e60~<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6709\u4e00\u4e2a golang<\/code> grpc \u670d\u52a1\u5668\uff0c\u5b83\u5177\u6709\u6d41\u7aef\u70b9\u3002\u65e9\u4e9b\u65f6\u5019\uff0c\u6211\u6309\u987a\u5e8f\u5b8c\u6210\u6240\u6709\u5de5\u4f5c\u5e76\u5728\u6d41\u4e0a\u53d1\u9001\uff0c\u4f46\u540e\u6765\u6211\u610f\u8bc6\u5230\u6211\u53ef\u4ee5\u4f7f\u5de5\u4f5c\u5e76\u53d1\uff0c\u7136\u540e\u5728\u6d41\u4e0a\u53d1\u9001\u3002\u6765\u81ea grpc-go<\/code> \u6587\u6863\uff1a\u6211\u77e5\u9053\u6211\u53ef\u4ee5\u4f7f\u5de5\u4f5c\u5e76\u53d1\uff0c\u4f46\u4f60\u4e0d\u80fd\u4f7f\u6d41\u4e0a\u7684\u53d1\u9001\u5e76\u53d1\uff0c\u6240\u4ee5\u6211\u5f97\u5230\u4e86\u4e0b\u9762\u7684\u4ee3\u7801\u6765\u5b8c\u6210\u8fd9\u9879\u5de5\u4f5c\u3002<\/p>\n

\u4e0b\u9762\u662f\u6211\u7684\u6d41\u7aef\u70b9\u4e2d\u7684\u4ee3\u7801\uff0c\u5b83\u4ee5\u6d41\u65b9\u5f0f\u5c06\u6570\u636e\u53d1\u9001\u56de\u5ba2\u6237\u7aef\u3002\u8fd9\u4f1a\u540c\u65f6\u5b8c\u6210\u6240\u6709\u5de5\u4f5c\u3002<\/p>\n

\/\/ get \"allCids\" from lot of files and load in memory.\nallCids := .....\nvar data = allCids.([]int64)\nout := make(chan *custPbV1.CustomerResponse, len(data))\n\nwg := &sync.WaitGroup{}\nwg.Add(len(data))\ngo func() {\n  wg.Wait()\n  close(out)\n}()\n\nfor _, cid := range data {\n  go func (id int64) {\n    defer wg.Done()\n    pd := repo.GetCustomerData(strconv.FormatInt(cid, 10))\n    if !pd.IsCorrect {\n      return\n    }\n    resources := us.helperCom.GenerateResourceString(pd)\n    val, err := us.GenerateInfo(clientId, resources, cfg)\n    if err != nil {\n      return\n    }\n    out <- val\n  }(cid)\n}\n\nfor val := range out {\n  if err := stream.Send(val); err != nil {\n    log.Printf(\"send error %v\", err)\n  }\n}<\/pre>\n
\u73b0\u5728\u6211\u9047\u5230\u7684\u95ee\u9898\u662f data<\/code> \u5207\u7247\u7684\u5927\u5c0f\u53ef\u80fd\u7ea6\u4e3a\u4e00\u767e\u4e07\u4e2a\uff0c\u6240\u4ee5\u6211\u4e0d\u60f3\u751f\u6210\u767e\u4e07\u4e2a go \u4f8b\u7a0b\u6765\u5b8c\u6210\u8fd9\u9879\u5de5\u4f5c\u3002\u6211\u8be5\u5982\u4f55\u5904\u7406\u8fd9\u91cc\u7684\u60c5\u51b5\uff1f\u5982\u679c\u6211\u4f7f\u7528 len(data)<\/code> \u4ee3\u66ff 100<\/code> \u90a3\u4e48\u8fd9\u5bf9\u6211\u6709\u7528\u8fd8\u662f\u6211\u4e5f\u9700\u8981\u5728 100<\/code> \u5b50\u6570\u7ec4\u4e2d\u5bf9\u6570\u636e\u8fdb\u884c\u5207\u7247\uff1f\u6211\u53ea\u662f\u5f88\u56f0\u60d1\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u7684\u6700\u4f73\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f<\/p>\n
\u6211\u6700\u8fd1\u5f00\u59cb\u4f7f\u7528 golang<\/code>\uff0c\u6240\u4ee5\u5982\u679c\u6211\u7684\u4e0a\u8ff0\u4ee3\u7801\u5728\u5e76\u53d1\u65f6\u6709\u4efb\u4f55\u9519\u8bef\uff0c\u8bf7\u539f\u8c05\u6211\u3002<\/p>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
\u8bf7\u68c0\u67e5\u6b64\u4f2a\u4ee3\u7801<\/p>\n
func main() {\n\n    works := make(chan int, 100)\n    errChan := make(chan error, 100)\n    out := make(chan *custPbV1.CustomerResponse, 100)\n\n    \/\/ spawn fixed workers\n    var workerWg sync.WaitGroup\n    for i := 0; i < 100; i++ {\n        workerWg.Add(1)\n        go worker(&workerWg, works, errChan, out)\n    }\n\n    \/\/ give input\n    go func() {\n        for _, cid := range data {\n            \/\/ this will be blocked if all the workers are busy and no space is left in the channel.\n            works <- cid\n        }\n        close(works)\n    }()\n\n    var analyzeResults sync.WaitGroup\n    analyzeResults.Add(2)\n\n    \/\/ process errors\n    go func() {\n        for err := range errChan {\n            log.Printf(\"error %v\", err)\n        }\n        analyzeResults.Done()\n    }()\n\n    \/\/ process outout\n    go func() {\n        for val := range out {\n            if err := stream.Send(val); err != nil {\n                log.Printf(\"send error %v\", err)\n            }\n        }\n        analyzeResults.Done()\n    }()\n\n    workerWg.Wait()\n    close(out)\n    close(errChan)\n    analyzeResults.Wait()\n}\n\nfunc worker(job *sync.WaitGroup, works chan int, errChan chan error, out chan *custPbV1.CustomerResponse) {\n    defer job.Done()\n    \/\/ Idle worker takes the work from this channel. \n    for cid := range works {\n        pd := repo.GetCustomerData(strconv.FormatInt(cid, 10))\n        if !pd.IsCorrect {\n            errChan <- errors.New(fmt.Sprintf(\"pd %d is incorrect\", pd))\n            \/\/ we can not return here as the total number of workers will be reduced. If all the workers does this then there is a chance that no workers are there to do the job\n            continue\n        }\n        resources := us.helperCom.GenerateResourceString(pd)\n        val, err := us.GenerateInfo(clientId, resources, cfg)\n        if err != nil {\n            errChan <- errors.New(fmt.Sprintf(\"got error\", err))\n            continue\n        }\n        out <- val\n    }\n}<\/pre>\n
\u8bf4\u660e\uff1a<\/strong><\/p>\n
\u8fd9\u662f\u4e00\u4e2a\u5de5\u4f5c\u6c60\u5b9e\u73b0\uff0c\u6211\u4eec\u5728\u5176\u4e2d\u751f\u6210\u56fa\u5b9a\u6570\u91cf\u7684 goroutine\uff08\u6b64\u5904\u4e3a 100 \u4e2a\u5de5\u4f5c\u4eba\u5458\uff09\u6765\u6267\u884c\u76f8\u540c\u7684\u5de5\u4f5c\uff08\u6b64\u5904\u4e3a getcustomerdata() \u548cgenerateinfo()\uff09\uff0c\u4f46\u8f93\u5165\u6570\u636e\u4e0d\u540c\uff08\u6b64\u5904\u4e3a cid\uff09\u3002\u8fd9\u91cc\u7684100\u4e2aworker\u5e76\u4e0d\u610f\u5473\u7740\u5b83\u662f\u5e76\u884c\u7684\u800c\u662f\u5e76\u53d1\u7684\uff08\u53d6\u51b3\u4e8egomaxprocs\uff09\u3002\u5982\u679c\u4e00\u4e2aworker\u6b63\u5728\u7b49\u5f85io\u7ed3\u679c\uff08\u57fa\u672c\u4e0a\u662f\u4e00\u4e9b\u963b\u585e\u64cd\u4f5c\uff09\uff0c\u90a3\u4e48\u8be5\u7279\u5b9a\u7684goroutine\u5c06\u8fdb\u884c\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u5e76\u4e14\u5176\u4ed6worker goroutine\u6709\u673a\u4f1a\u6267\u884c\u3002\u4f46\u662f\uff0c\u589e\u52a0 goroutuines\uff08\u5de5\u4f5c\u7ebf\u7a0b\uff09\u53ef\u80fd\u4e0d\u4f1a\u63d0\u4f9b\u592a\u591a\u6027\u80fd\uff0c\u4f46\u53ef\u80fd\u4f1a\u5bfc\u81f4\u901a\u9053\u4e0a\u7684\u4e89\u7528\uff0c\u56e0\u4e3a\u66f4\u591a\u7684\u5de5\u4f5c\u7ebf\u7a0b\u6b63\u5728\u7b49\u5f85\u8be5\u901a\u9053\u4e0a\u7684\u8f93\u5165\u4f5c\u4e1a\u3002<\/p>\n
\u76f8\u5bf9\u4e8e\u5c06 100 \u4e07\u4e2a\u6570\u636e\u62c6\u5206\u4e3a\u5b50\u5207\u7247\u7684\u597d\u5904\u5c31\u662f\u8fd9\u6837\u3002\u5047\u8bbe\u6211\u4eec\u6709 1000 \u4e2a\u5de5\u4f5c\u5c97\u4f4d\u548c 100 \u540d\u5de5\u4eba\u3002\u6bcf\u4e2a\u5de5\u4eba\u5c06\u88ab\u5206\u914d\u5230\u5de5\u4f5c 1-10\u300111-20 \u7b49…\u5982\u679c\u524d 10 \u4e2a\u5de5\u4f5c\u6bd4\u5176\u4ed6\u5de5\u4f5c\u82b1\u8d39\u66f4\u591a\u65f6\u95f4\u600e\u4e48\u529e\uff1f\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u7b2c\u4e00\u4e2a\u5de5\u4f5c\u4eba\u5458\u8d85\u8f7d\uff0c\u5176\u4ed6\u5de5\u4f5c\u4eba\u5458\u5c06\u5b8c\u6210\u4efb\u52a1\u5e76\u5904\u4e8e\u7a7a\u95f2\u72b6\u6001\uff0c\u5373\u4f7f\u6709\u5f85\u5904\u7406\u7684\u4efb\u52a1\u3002\u56e0\u6b64\uff0c\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u8fd9\u662f\u6700\u597d\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u56e0\u4e3a\u95f2\u7f6e\u7684\u5de5\u4eba\u5c06\u63a5\u624b\u4e0b\u4e00\u4efd\u5de5\u4f5c\u3002\u56e0\u6b64\uff0c\u4e0e\u5176\u4ed6\u5de5\u4eba\u76f8\u6bd4\uff0c\u6ca1\u6709\u5de5\u4eba\u7684\u8d85\u8f7d\u7a0b\u5ea6\u66f4\u9ad8<\/p>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5982\u4f55\u5728 golang \u4e2d\u7684\u6d41\u4e0a\u53d1\u9001\u6570\u636e\u65f6\u4f7f\u5de5\u4f5c\u5e76\u53d1\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\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-207404","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207404","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=207404"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207404\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207404"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}