| Context keys, request IDs, user metadata | references/context-propagation.md | | slog setup, logging middleware, child loggers | references/structured-logging.md | | AppHandler pattern, domain errors, recovery | references/error-handling-middleware.md |
All middleware follows the standard func(http.Handler) http.Handler pattern. This is the composable building block for cross-cutting concerns in Go HTTP servers.
Use context.WithValue for request-scoped data that crosses API boundaries (request IDs, authenticated users, tenant IDs). Always use typed keys to avoid collisions.
Patrones de middleware HTTP idiomático de Go con propagación de contexto, registro estructurado mediante slog, manejo de errores centralizado y recuperación de pánico. Úselo al escribir middleware, agregar seguimiento de solicitudes o implementar inquietudes transversales. Fuente: existential-birds/beagle.