How to clear cache in Go language

Golang greatly simplifies the programming process, but caching issues can still become a bottleneck in large projects. In this article, I will teach you how to clear cache in Go language.

The Go program has the caching mechanism enabled by default, which means you do not have to manually import libraries and dependencies, the Go language will automatically cache and save them. This mechanism is useful when you use the same dependent library in different projects, as it avoids downloading and importing the same library repeatedly.

Because Golang enables caching by default, you may encounter the following problems:

• You need to use a different version of the library, but the Go language still uses the old version in the cache .
• Some libraries used in your program are obsolete, but due to caching, they are still used.

Problems like this can be solved by clearing the Go language cache. Below I will explain how to clear the cache.

Step one: Find the GO cache path

Before you start clearing the Go language cache, you need to find the path to the cache file. The GO cache path can be found by entering the following command in the terminal:

go env GOCACHE

This command will return the cache path. On my machine, its return value is:

/Users/myusername/Library/Caches/go-build

Note: If you haven't built any projects using Go yet, this directory may not exist.

Step 2: Stop the Go language build service

Before you start clearing the cache, you need to make sure you have stopped the Go language build service, because the build service may be using files in the cache. We can stop the build service with the following command:

go stop

This will stop all build services for the Go language.

Step 3: Clear cache

After stopping the build service, we can clear the Go language cache by clearing the cache file. You can use the following command to clear the cache:

go clean -cache

After running this command, you will see the Go language output the following information in the terminal:

[...]/bin/goimports: deleting unused binary /Users/myusernamego/pkg/tool/darwin_amd64/goimports
[...]/bin/go: deleting unused binary /Users/myusernamego/pkg/tool/darwin_amd64/go
[...]/src: cache removed
[...]/src/runtime: cache removed
[...]/src/cmd/cgo: cache removed
[...]/pkg/mod: cleaned successf

This information indicates that the Go language has successfully cleared the cache. cache.

Look at the cache directory again, you will find that it is now empty:

ls /Users/myusername/Library/Caches/go-build

After running this command, you will see the following output:

ls: /Users/myusername/Library/Caches/go-build: No such file or directory

That’s it, cache The cleanup has been completed.

Summary

In this article, I introduced you how to clear the cache of Go language. Using cache can help us manage dependencies more easily, but in some cases, caching can also become a problem. Clearing the cache allows us to avoid problems when using outdated libraries and dependencies.

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