go-api-gateway

An API gateway in Go with routing and middleware handles request distribution, validation, and cross-cutting concerns. Fiber and Chi are popular Go frameworks that provide efficient routing, middleware composition for auth and logging, and request/response handling—enabling you to build production-grade endpoints for agent management and chat services.

Core middleware for a production API gateway includes authentication for access control, logging for observability, rate limiting to prevent abuse, and tracing for debugging distributed requests. These middleware layers intercept requests before they reach your route handlers, centralizing cross-cutting concerns and improving security and maintainability.

Both Fiber and Chi support server-sent events (SSE) streaming for real-time, unidirectional communication from server to client. This enables long-lived connections for chat endpoints and live notifications—useful when building agent chat systems or deployment status feeds that require push updates.

DTO-first API design uses request/response data transfer objects with validation rules to ensure type safety and data integrity before processing. Go frameworks like Fiber and Chi integrate with validation libraries to automatically check payloads against your defined structures, rejecting malformed requests early.

Organize routes by logical domain (agents, chat, deployments, health), register them with a central gateway router, and apply middleware composition consistently. This structure makes routing transparent, enables selective middleware application per route group, and scales as you add new endpoints.

Yes. Server configuration includes setting listen addresses, timeouts, and TLS settings. Both Fiber and Chi allow explicit server setup—Fiber through its app config and Chi through the standard http.Server—giving you control over performance tuning and security policies for your API gateway.