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Go

Compiler Optimizations and Inlining

Master Go compiler optimizations including function inlining, dead code elimination, and compiler directives. Learn how to write code that compiles efficiently.

Go

Concurrency Performance Tuning in Go

Optimize concurrent Go programs — goroutine pool sizing, channel buffer tuning, atomic operations, lock contention reduction, batch processing, and profiling with pprof.

Go

Configuration Management in Go

A complete guide to Go configuration management — environment variables, Viper, config file formats, secrets management, feature flags, hot reload, and production validation …

Go

Constants and Enumerations in Go

Master Go constants and enumerations — const declarations, untyped vs typed constants, iota patterns for enums and bit flags, String() methods, and why typed enums prevent bugs …

Go

Creational Design Patterns in Go

Master creational design patterns in Go — Singleton with sync.Once, Factory functions, Builder with functional options, Abstract Factory, and Object Pool with sync.Pool. Practical …

Go

Cryptography in Go

Master Go cryptography — AES-GCM authenticated encryption, SHA-256/SHA-3 hashing, HMAC for message authentication, RSA and ECDSA signatures, bcrypt for passwords, and using …

Go

Custom Errors and Error Wrapping in Go

Master custom error types and error wrapping in Go — implementing the error interface, adding structured context, Unwrap chains, multi-error with errors.Join, and patterns for …

Go

Data Validation and Transformation in Go

Master data validation in Go — struct validation with go-playground/validator, custom rules, collecting all errors vs failing fast, input sanitization, and transformation pipelines …