This guide shows how to use Go's os/user package to obtain the current or a specified user's UID and GID, explains the effect of sudo on the reported user, and demonstrates converting those string IDs to int or int64 with strconv functions.
This article presents a collection of practical Go performance‑tuning techniques—including reuse of objects with sync.Pool, avoiding pointer‑heavy map keys, generating marshal code to bypass reflection, using strings.Builder for efficient concatenation, preferring strconv over fmt, and pre‑allocating slices—to significantly reduce allocation overhead and garbage‑collection time.
This article presents seven practical Go performance optimization techniques—including using sync.Pool, avoiding pointer‑heavy maps, generating marshal code, leveraging strings.Builder, preferring strconv over fmt, pre‑allocating slices, and passing byte slices—to reduce garbage collection overhead, improve allocation efficiency, and achieve up to 97% faster execution.
