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This article introduces how to understand the memory leak in the HTTP standard library of Go language. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

A http server implemented using a go library:

Package main import ("net/http") func main () {http.ListenAndServe (": 8080", nil)}

It will be started with about the memory of 850kb. Send some requests to it through your browser. You will observe that it (memory usage) rises rapidly to 1mb. If you wait, you will find that it never comes down. Now (use the script below) move it with Apache Bench and you will find that memory usage is still growing. After a period of time, it will eventually remain around 8.2mb.

. Edit Editor: it doesn't look like it will stop at 8.2, but its growth rate will slow down significantly. Now it is at 9.2 level and is still growing.

Anyway, why did this happen? I used this shell script to find out:

While [true] do ab-n 1000-c 100 http://127.0.0.1:8080/ sleep 1 end

Then try to get the bottom line of this, I have tried to adjust the settings. Tried to use r.Close = true to block Keep-Alive. Nothing seems to work.

When I tried to determine if there was a memory leak in the program I was writing, I found the cause of the problem. It has a large number of http handlers and Imax O calls. After checking, I have closed all my database links, and I continue to observe that memory usage continues to rise. My program memory usage will be maintained at around 433 MB.

Here is the output of Goenv:

GOARCH= "amd64" GOBIN= "GOCHAR=" 6 "GOEXE="GOHOSTARCH=" amd64 "GOHOSTOS=" darwin "GOOS=" darwin "GOPATH=" / Users/mark/Documents/Programming/Go "GORACE="GOROOT=" / usr/local/go "GOTOOLDIR=" / usr/local/go/pkg/tool/darwin_amd64 "TERM=" dumb CC= "clang" GOGCCFLAGS= "- g-O2-fPIC-M64-pthread-fno-caret-diagnostics -Qunused-arguments-fno-common "CXX=" clang++ "CGO_ENABLED=" 1 "on how to understand memory leaks in the HTTP standard library of the Go language, that's all. I hope the above content can be of some help to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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