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Paul Burlumi paulburlumi

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@slok
slok / pprof.md
Last active August 8, 2025 09:10
Go pprof cheat sheet

Enable profiling

Default http server

import (
    _ "net/http/pprof"
    "net/http"
)
@ww9
ww9 / context_keys_as_struct_not_int_or_string.md
Last active July 29, 2025 14:54
Why use empty struct{} and not int or string for context.Value() key types in #go

Use struct{} as keys for context.Value() in Go

In the other file of this gist I detail why we should use struct{} as context.Value() keys and not int or string. Open gist to see main.go but the TLDR is:

	type key struct{}
	ctx = context.WithValue(ctx, key{}, "my value") // Set value
	myValue, ok := ctx.Value(key{}).(string) // Get value