{"id":207447,"date":"2025-07-08T13:26:01","date_gmt":"2025-07-08T05:26:01","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207447\/"},"modified":"2025-07-08T13:26:01","modified_gmt":"2025-07-08T05:26:01","slug":"%e5%9c%a8go%e4%b8%ad%e5%88%86%e9%85%8d%e4%ba%86%e5%a4%a7%e9%87%8f%e7%9a%84%e5%86%85%e5%ad%98%e3%80%82%e6%80%8e%e4%b9%88%e4%bf%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207447\/","title":{"rendered":"\u5728Go\u4e2d\u5206\u914d\u4e86\u5927\u91cf\u7684\u5185\u5b58\u3002\u600e\u4e48\u4fee\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5728Go\u4e2d\u5206\u914d\u4e86\u5927\u91cf\u7684\u5185\u5b58\u3002\u600e\u4e48\u4fee\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-22 17:54:35<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u300a\u5728Go\u4e2d\u5206\u914d\u4e86\u5927\u91cf\u7684\u5185\u5b58\u3002\u600e\u4e48\u4fee\uff1f\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60Golang<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591aGolang<\/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

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

\u4e3a 50 \u4e2a 5 mb \u8bf7\u6c42\u5206\u914d\u4e86\u6570\u767e mb \u5185\u5b58\u3002\u5185\u5b58\u5df2\u5206\u914d\u4e14\u4e0d\u518d\u91ca\u653e\u3002 \u6211\u600e\u6837\u624d\u80fd\u6e05\u9664\u6211\u7684\u8bb0\u5fc6\uff1f\u4e3a\u4ec0\u4e48\u4f1a\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\uff1f<\/p>\n

\u6211\u5df2\u7ecf\u5728\u6211\u7684\u5bb6\u7528\u7535\u8111\u548c vps \u4e0a\u5c1d\u8bd5\u8fc7 ubuntu<\/p>\n

package main\n\nimport (\n    \"fmt\"\n    \"io\/ioutil\"\n    \"net\/http\"\n    \"time\"\n)\n\nfunc main() {\n    fmt.Println(\"start\")\n\n    for i := 0; i < 50; i++ {\n        go func() {\n            DoRequest()\n        }()\n        time.Sleep(10 * time.Millisecond)\n    }\n\n    time.Sleep(10 * time.Minute)\n}\n\nfunc DoRequest() error {\n    requestUrl := \"https:\/\/blockchain.info\/rawblock\/0000000000000000000eebedea046425bd54626e6c56eb032e66e714d0141ea6\"\n\n    req, err := http.NewRequest(\"GET\", requestUrl, nil)\n\n    if err != nil {\n        return err\n    }\n\n    req.Header.Set(\"user-agent\", \"free\")\n\n    httpClient := &http.Client{\n        Timeout: time.Second * 10,\n    }\n\n    resp, err := httpClient.Do(req)\n\n    if resp != nil {\n        defer resp.Body.Close()\n    }\n\n    if err != nil {\n        return err\n    }\n\n    body, err := ioutil.ReadAll(resp.Body)\n    if err != nil {\n        return err\n    }\n\n    fmt.Println(\"bodylen\", len(body))\n\n    return nil\n}\n<\/pre>\n
\u5728\u67d0\u5904\u5206\u914d\u4e86 400mb<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
for i := 0; i < 50; i++ {\n        go func() {\n            dorequest()\n        }()\n        time.sleep(10 * time.millisecond)\n    }<\/pre>\n
\u6c38\u8fdc\u4e0d\u8981\u521b\u5efa\u8fd9\u6837\u7684 go-routine\u3002\u59cb\u7ec8\u786e\u4fdd\u60a8\u521b\u5efa go \u4f8b\u7a0b\u7684\u65b9\u5f0f\u5728\u4efb\u4f55\u60c5\u51b5\u4e0b\uff08\u5305\u62ec\u6700\u574f\u7684\u60c5\u51b5\uff09\u90fd\u4e0d\u4f1a\u586b\u5145\u5927\u91cf\uff08\u5168\u90e8\uff09\u5185\u5b58<\/p>\n
\u7b80\u5355\u7684\u89e3\u51b3\u65b9\u6848\u662f\u63a7\u5236\u4e00\u6b21\u53ef\u4ee5\u751f\u6210\uff08\u6216\u8fd0\u884c\uff09\u7684 go \u4f8b\u7a0b\u7684\u6570\u91cf\u3002<\/p>\n
\u60a8\u53ef\u4ee5\u901a\u8fc7\u4e58\u4ee5\u4e00\u6b21\u8981\u8fd0\u884c\u7684 go \u4f8b\u7a0b\u7684 max-number \u548c 1 \u4e2a go \u4f8b\u7a0b\u53ef\u4ee5\u4f7f\u7528\u7684 max-memory \u6765\u9884\u5148\u8ba1\u7b97\u6700\u574f\u60c5\u51b5\u4e0b\u8981\u5360\u7528\u7684\u5185\u5b58\u3002<\/p>\n
\u60a8\u53ef\u4ee5\u4f7f\u7528\u901a\u9053\u6765\u63a7\u5236 go \u4f8b\u7a0b\u7684\u5b9e\u4f8b\u3002<\/em><\/p>\n
\u8bf7\u53c2\u9605\u6b64 stackoverflow \u95ee\u9898\u7684\u7b2c\u4e00\u4e2a\u7b54\u6848 <\/strong><\/p>\n
\u59cb\u7ec8\u5728\u6027\u80fd\u548c\u6240\u9700\u8d44\u6e90\u4e4b\u95f4\u4f7f\u7528\u5e73\u8861\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n
2019 \u5e74 6 \u6708 11 \u65e5\u66f4\u65b0<\/strong><\/p>\n
\u8fd9\u662f\u793a\u4f8b go \u7a0b\u5e8f <\/p>\n
\u60a8\u6b63\u5728\u4e3a\u6bcf\u4e2a go \u4f8b\u7a0b\u521b\u5efa\u4e00\u4e2a http \u5ba2\u6237\u7aef\u3002<\/p>\n
http \u5ba2\u6237\u7aef\u88ab\u8bbe\u8ba1\u4e3a\u4e00\u6b21\u521b\u5efa\u5e76\u591a\u6b21\u4f7f\u7528\u3002\u5b83\u4eec\u662f\u65e5\u5e38\u5b89\u5168\u7684\u3002 \u5b83\u4eec\u5141\u8bb8\u8fde\u63a5\u91cd\u7528\u548c\u5176\u4ed6\u6548\u7387\u8282\u7701\u3002<\/p>\n
\u5728 main \u4e2d\uff08\u800c\u4e0d\u662f\u5728\u60a8\u7684 go \u4f8b\u7a0b\u4e2d\uff09\u521b\u5efa\u4e00\u6b21 http \u5ba2\u6237\u7aef\uff0c\u7136\u540e\u5c06\u6b64\u5355\u4e2a\u5f15\u7528\u4f20\u9012\u7ed9\u60a8\u7684\u6240\u6709 50 \u4e2a go \u4f8b\u7a0b\u3002<\/p>\n
\u7f16\u8f91\uff1a<\/strong>\u6b64\u5916\uff0c\u867d\u7136\u5b83\u53ef\u80fd\u4e0d\u4f1a\u5bf9\u60a8\u7684\u60c5\u51b5\u4ea7\u751f\u5b9e\u9645\u5f71\u54cd\uff0c\u4f46\u8bf7\u6c42\u7684\u987a\u5e8f\u901a\u5e38\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
resp, err := httpClient.Do(req)\nif err != nil {\n        return err \/\/ check error first\n}\ndefer resp.Body.Close() \/\/ no error - so resp will *NOT* be nil - so this is safe<\/pre>\n
\u7f16\u8f91 2\uff1a<\/strong> \u6b63\u5982 @adrian \u6240\u63d0\u5230\u7684\uff1ago<\/code> \u7684\u5783\u573e\u6536\u96c6\u4e0d\u662f\u77ac\u65f6\u7684 – \u4e5f\u4e0d\u5e94\u8be5\u662f – \u56e0\u4e3a\u5b83\u662f\u4e00\u9879\u6602\u8d35\u7684\u64cd\u4f5c\u3002\u5982\u679c\u60a8\u4e0d\u518d\u9700\u8981\u67d0\u4e2a\u5185\u5b58\u5757 – \u53ea\u9700\u4e0d\u518d\u5f15\u7528\u5b83\u5373\u53ef\u3002\u8ba9 gc \u5b8c\u6210\u5b83\u7684\u5de5\u4f5c\uff0c\u8fd9\u6837\u60a8\u5c31\u53ef\u4ee5\u4e13\u6ce8\u4e8e\u60a8\u7684\u5de5\u4f5c\uff01<\/p>\n
\u5982\u679c\u60a8\u5bf9 go<\/code> gc \u7684\u6f14\u53d8\u611f\u5230\u597d\u5947\uff1a<\/p>\n
    \n
  • \uff08\u6280\u672f\u65b9\u9762\u8f83\u91cd\uff09<\/li>\n
  • <\/li>\n<\/ul>\n
    \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u5728Go\u4e2d\u5206\u914d\u4e86\u5927\u91cf\u7684\u5185\u5b58\u3002\u600e\u4e48\u4fee\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~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03Golang\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\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-207447","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207447","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=207447"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207447\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}