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context.Context in Go explained: cancellations, timeouts, propagation in HTTP, databases and workers. A key piece for real services.

Goroutines, concurrency vs parallelism, real backend patterns and common mistakes. Simple and effective concurrency in Go.

Tutorial to build a REST API in Go with a solid structure: handlers, services, repositories, errors, and configuration.

Error handling in Go: why errors are explicit, how to use wrapping, sentinel errors and custom errors. No exceptions, with clarity.