{"id":108756,"date":"2025-05-13T04:21:13","date_gmt":"2025-05-13T00:51:13","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/ooms-%d8%b1%d8%a7-%d8%a8%d8%a7-semahores-%d9%85%d8%aa%d9%88%d9%82%d9%81-%da%a9%d9%86%db%8c%d8%af-%d8%ac%d8%a7%d9%85%d8%b9%d9%87-dev\/"},"modified":"2025-05-13T04:21:13","modified_gmt":"2025-05-13T00:51:13","slug":"ooms-%d8%b1%d8%a7-%d8%a8%d8%a7-semahores-%d9%85%d8%aa%d9%88%d9%82%d9%81-%da%a9%d9%86%db%8c%d8%af-%d8%ac%d8%a7%d9%85%d8%b9%d9%87-dev","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/ooms-%d8%b1%d8%a7-%d8%a8%d8%a7-semahores-%d9%85%d8%aa%d9%88%d9%82%d9%81-%da%a9%d9%86%db%8c%d8%af-%d8%ac%d8%a7%d9%85%d8%b9%d9%87-dev\/","title":{"rendered":"Ooms \u0631\u0627 \u0628\u0627 semahores \u0645\u062a\u0648\u0642\u0641 \u06a9\u0646\u06cc\u062f – \u062c\u0627\u0645\u0639\u0647 dev"},"content":{"rendered":"
\n

GO \u0646\u0648\u0634\u062a\u0646 \u06a9\u062f \u0647\u0645\u0632\u0645\u0627\u0646 \u0631\u0627 \u0622\u0633\u0627\u0646 \u0645\u06cc \u06a9\u0646\u062f – \u0641\u0642\u0637 \u0628\u0647 Dosomething () \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f \u0648 \u062e\u0627\u0645\u0648\u0634 \u0647\u0633\u062a\u06cc\u062f. \u0627\u0645\u0627 \u0627\u06af\u0631 \u0645\u0631\u0627\u0642\u0628 \u0646\u06cc\u0633\u062a\u06cc\u062f \u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u062e\u062f\u0645\u0627\u062a \u062e\u0648\u062f \u0631\u0627 \u0628\u0627 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u06af\u0648\u0631\u0648\u0633 \u0647\u0627 \u062a\u062d\u062a \u0627\u0644\u0634\u0639\u0627\u0639 \u0642\u0631\u0627\u0631 \u062f\u0647\u06cc\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0646\u062d\u0648\u0647 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0628\u0631\u0648\u0632 \u062a\u0635\u0627\u062f\u0641\u06cc \u062e\u0648\u062f \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u06cc\u06a9 semaphore \u0633\u0627\u062f\u0647 \u0648 \u0645\u0624\u062b\u0631 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a.<\/p>\n

Semaphore \u06cc\u06a9 \u0627\u0644\u06af\u0648\u06cc \u0647\u0645\u0632\u0645\u0627\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u062f\u062a\u0647\u0627 \u0642\u0628\u0644 \u0627\u0632 \u0622\u0646 \u0648\u062c\u0648\u062f \u062f\u0627\u0634\u062a\u0647 \u0627\u0633\u062a \u060c \u0627\u0645\u0627 \u0627\u062c\u0631\u0627\u06cc \u0622\u0646 \u0628\u0627 \u06a9\u0627\u0646\u0627\u0644 \u0647\u0627\u06cc GO \u0628\u0633\u06cc\u0627\u0631 \u0622\u0633\u0627\u0646 \u0627\u0633\u062a.<\/p>\n

\u062f\u0631 \u0639\u0644\u0648\u0645 \u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631 \u0645\u0648\u0627\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc semaphores \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u060c \u0627\u0645\u0627 \u06cc\u06a9\u06cc \u0627\u0632 \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u062a\u0631\u06cc\u0646 \u0622\u0646\u0647\u0627 \u062f\u0631 GO \u0645\u062d\u062f\u0648\u062f \u06a9\u0631\u062f\u0646 \u062a\u0639\u062f\u0627\u062f Goroutines \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u0634\u0645\u0627 \u0627\u0633\u062a.<\/p>\n

\u06af\u0648\u0631\u0648\u062a\u06cc\u0646 \u0647\u0627 \u0627\u0631\u0632\u0627\u0646 \u0647\u0633\u062a\u0646\u062f \u0627\u0645\u0627 \u0631\u0627\u06cc\u06af\u0627\u0646 \u0646\u06cc\u0633\u062a\u0646\u062f. \u06af\u0648\u0631\u0648\u0647\u0627\u06cc \u0628\u06cc \u062d\u062f \u0648 \u062d\u0635\u0631 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0628\u0647 \u062f\u0644\u06cc\u0644 \u0645\u0634\u0627\u062c\u0631\u0647 CPU \u060c \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0641\u0638\u0647 \u0641\u0631\u0627\u0631\u06cc (\u067e\u0634\u062a\u0647 \u0648 \u067e\u0634\u062a\u0647) \u0648 \u062d\u062a\u06cc \u0646\u0634\u062a \u06af\u0648\u0631\u0648\u062a\u06cc\u0646 \u0645\u0646\u062c\u0631 \u0628\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f \u062a\u062e\u0631\u06cc\u0628 \u0634\u062f\u0647 \u0634\u0648\u0646\u062f.<\/p>\n

\u0645\u062b\u0627\u0644:<\/strong>
\u0642\u0637\u0639\u0647 \u06a9\u062f \u0632\u06cc\u0631 \u0627\u0632 Go-Chi \u0627\u0642\u062a\u0628\u0627\u0633 \u0634\u062f\u0647 \u0627\u0633\u062a: https:\/\/github.com\/go-chi\/chi. \u0627\u06cc\u0646 \u06cc\u06a9 \u0633\u0631\u0648\u0631 \u0648\u0628 \u0633\u0627\u062f\u0647 \u0628\u0627 \u06cc\u06a9 \u0646\u0642\u0637\u0647 \u067e\u0627\u06cc\u0627\u0646\u06cc HTTP \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f \u062a\u0627 \u067e\u0631\u0648\u0646\u062f\u0647 \u0647\u0627\u06cc \u0628\u0632\u0631\u06af\u06cc \u0631\u0627 \u06a9\u0647 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u0647\u0627\u06cc \u0686\u0646\u062f \u0645\u0646\u0638\u0648\u0631\u0647 \u0627\u0631\u0627\u0626\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a \u060c \u067e\u0631\u062f\u0627\u0632\u0634 \u06a9\u0646\u062f \u0648 \u0627\u0632 \u06cc\u06a9 semaphore \u0628\u0631\u0627\u06cc \u0645\u062d\u062f\u0648\u062f \u06a9\u0631\u062f\u0646 \u0647\u0645\u0632\u0645\u0627\u0646\u06cc \u062c\u0647\u0627\u0646\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u062f \u060c \u0627\u0637\u0645\u06cc\u0646\u0627\u0646 \u062d\u0627\u0635\u0644 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0627\u06cc\u0646 \u0633\u0631\u0648\u06cc\u0633 \u0647\u0631\u06af\u0632 \u0628\u06cc\u0634 \u0627\u0632 \u062a\u0639\u062f\u0627\u062f \u062b\u0627\u0628\u062a \u067e\u0631\u0648\u0646\u062f\u0647 \u0647\u0627 \u0628\u0647 \u0637\u0648\u0631 \u0647\u0645\u0632\u0645\u0627\u0646 \u067e\u0631\u062f\u0627\u0632\u0634 \u0646\u0645\u06cc \u06a9\u0646\u062f – \u0635\u0631\u0641 \u0646\u0638\u0631 \u0627\u0632 \u0627\u06cc\u0646\u06a9\u0647 \u062a\u0639\u062f\u0627\u062f \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u0628\u0647 \u0646\u0642\u0637\u0647 \u067e\u0627\u06cc\u0627\u0646\u06cc \u0636\u0631\u0628\u0647 \u0645\u06cc \u0632\u0646\u0646\u062f.<\/p>\n

\n
func main() {\n    maxGoroutinesEnv := os.Getenv(\"MAX_GOROUTINES\")\n    maxGoroutines, err := strconv.Atoi(maxGoroutinesEnv)\n    if err != nil {\n        log.Fatalf(\"failed to load MAX_GOROUTINES env var %w\", err)\n    }\n\n    \/\/ create semaphore\n    sem := NewSemaphore(maxGoroutines)\n\n    r := chi.NewRouter()\n    r.Use(middleware.Logger)\n    r.Get(\"https:\/\/dev.to\/\", func(w http.ResponseWriter, r *http.Request) {\n        processListOfLargeCustomerProvidedConfigs(w, r, sem)\n    })\n    http.ListenAndServe(\":3000\", r)\n}\n\nfunc processListOfLargeCustomerProvidedConfigs(\n    w http.ResponseWriter,\n    r *http.Request,\n    sem *Semaphore,\n) {\n    err := r.ParseMultipartForm(50 << 20)\n    if err != nil {\n        errMsg := fmt.Sprintf(\"could not parse multipart form: %w\", err)\n        http.Error(w, errMsg, http.StatusBadRequest)\n        return\n    }\n\n    files := r.MultipartForm.File[\"configs\"]\n    if len(files) == 0 {\n        http.Error(w, \"no files in request\", http.StatusBadRequest)\n        return\n    }\n\n    for _, f := range files {\n        \/\/ blocks if the semaphore is \"full\"\n        sem.Acquire(1)\n\n        go func(f *multipart.FileHeader) {\n            defer sem.Release(1)\n            \/\/ memory and cpu intensive task\n            processFile(f)\n        }(f)\n    }\n}\n<\/code><\/pre>\n
\n
\n    \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u062f\u0631 \u0628\u0627\u0644\u0627 \u0645\u0634\u0627\u0647\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u062f \u060c \u0647\u0631 \u0628\u0627\u0631 \u06a9\u0647 \u0633\u0639\u06cc \u062f\u0631 \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 goroutine \u0628\u0631\u0627\u06cc \u067e\u0631\u062f\u0627\u0632\u0634 \u06cc\u06a9 \u0641\u0627\u06cc\u0644 \u062f\u0627\u0631\u06cc\u0645 \u060c \u0627\u06af\u0631 \u0633\u0645\u06cc\u0641\u0648\u0631 “\u067e\u0631” \u0628\u0627\u0634\u062f \u0648 \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u067e\u0633 \u0627\u0632 \u0627\u0646\u062a\u0634\u0627\u0631 \u06cc\u06a9 \u0642\u0637\u0639\u0647 \u06a9\u0627\u0631 \u060c \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u0627\u062f\u0627\u0645\u0647 \u0645\u06cc \u062f\u0647\u06cc\u0645.<\/p>\n
\u0627\u062c\u0631\u0627\u06cc \u062d\u062f\u0627\u0642\u0644 semaphore:<\/strong>
\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0627\u062c\u0631\u0627\u06cc \u06a9\u0627\u0645\u0644 \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u062f\u0631 \u0645\u062b\u0627\u0644 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n
\n
type Semaphore struct {\n    c chan struct{}\n}\n\nfunc NewSemaphore(w int) *Semaphore {\n    return &Semaphore{\n        \/\/ create a buffered channel with capacity\n       \/\/ equal to the weight of the semaphore\n        c: make(chan struct{}, w),\n    }\n}\n\nfunc (s *Semaphore) Acquire(w int) {\n    for range w {\n        \/\/ Send an empty struct to the channel.\n        \/\/ Blocks if the channel is full \u2014 meaning we've  reached our   concurrency limit.\n        \/\/ We use `struct{}` to avoid extra allocations.\n        s.c <- struct{}{}\n    }\n}\n\nfunc (s *Semaphore) Release(w int) {\n        \/\/ pull the desired amount of work\n        \/\/ out of the semaphore channel\n    for range w {\n        <-s.c\n    }\n}\n<\/code><\/pre>\n
\n
\n    \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\ud83d\udce6 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u0631\u0627 \u062a\u0631\u062c\u06cc\u062d \u0645\u06cc \u062f\u0647\u06cc\u062f\u061f<\/strong>
\u0648 \u0627\u06af\u0631 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u06cc\u06a9 semaphore \u0631\u0627 \u062d\u062a\u06cc \u0633\u0631\u06cc\u0639\u062a\u0631 \u0627\u062c\u0631\u0627 \u06a9\u0646\u06cc\u062f \u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u06cc\u06a9\u06cc \u0631\u0627 \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u062f: https:\/\/pkg.go.dev\/golang.org\/x\/sync\/semaphore<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"
GO \u0646\u0648\u0634\u062a\u0646 \u06a9\u062f \u0647\u0645\u0632\u0645\u0627\u0646 \u0631\u0627 \u0622\u0633\u0627\u0646 \u0645\u06cc \u06a9\u0646\u062f – \u0641\u0642\u0637 \u0628\u0647 Dosomething () \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f \u0648 \u062e\u0627\u0645\u0648\u0634 \u0647\u0633\u062a\u06cc\u062f. \u0627\u0645\u0627 \u0627\u06af\u0631 \u0645\u0631\u0627\u0642\u0628 \u0646\u06cc\u0633\u062a\u06cc\u062f \u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u062e\u062f\u0645\u0627\u062a \u062e\u0648\u062f \u0631\u0627 \u0628\u0627 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u06af\u0648\u0631\u0648\u0633 \u0647\u0627 \u062a\u062d\u062a \u0627\u0644\u0634\u0639\u0627\u0639 \u0642\u0631\u0627\u0631 \u062f\u0647\u06cc\u062f. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0646\u062d\u0648\u0647 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0628\u0631\u0648\u0632 \u062a\u0635\u0627\u062f\u0641\u06cc \u062e\u0648\u062f \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u06cc\u06a9 semaphore \u0633\u0627\u062f\u0647 \u0648 \u0645\u0624\u062b\u0631 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 …<\/p>\n","protected":false},"author":2,"featured_media":108757,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/media2.dev.to\/dynamic\/image\/width=1000,height=500,fit=cover,gravity=auto,format=auto\/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fsg4dvi5tdcykm8i0da3x.png","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-108756","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/108756","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=108756"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/108756\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/108757"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=108756"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=108756"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=108756"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}