If you’re working with Go and care about performance, then check out the https://goperf.dev/

Here you can find not theoretical, but practical patterns applicable to memory issues, concurrency, and overall, real bottlenecks you hit in production.

The guide has been recently updated with more depth (atomics, concurrency trade-offs, etc.), so worth revisiting even if you’ve seen it before.

Solid reference to keep bookmarked. Enjoy!