Echo From Zero

Learn Echo, the high-performance Go web framework: the instance and your first server, routing and groups, binding and validation, responses and rendering, middleware, a full REST API with centralized error handling, and testing and production. A clean, batteries-included alternative to Gin you'll find across Go shops.

1. What Echo Is & Your First Server Echo is a fast Go web framework over net/http where handlers return errors and a central handler renders them. Install it, write a tiny server, run it, and meet the instance and context.
2. Routing & Groups How Echo matches requests: methods and paths to handlers, path and query params via the context, and route groups that share a prefix and middleware.
3. Binding & Validation Decode request bodies into structs with c.Bind, then check them with a validator you wire up yourself — Echo keeps binding and validation as two deliberate, separate steps.
4. Responses & Rendering How Echo sends data back: every response helper returns an error you return — JSON with status codes, String/Blob/File/Redirect/NoContent, HTML templates via a Renderer, and serving static files.
5. Middleware Middleware in Echo wraps a handler — func(next) handler — and the chain runs around your handler while the error flows back out. Built-ins, scopes, and a real auth middleware.
6. A REST API with Error Handling Build full CRUD for the books API — five handlers over one collection — and wire Echo's centralized HTTPErrorHandler so every failure path returns one consistent JSON error shape.
7. Testing & Production Test Echo in-memory with net/http/httptest (no ports) using NewContext or ServeHTTP, then ship it: HideBanner/HidePort, real server timeouts, graceful shutdown, and a static-binary container behind a proxy.
8. Where to Go Next Look at the real REST API you can now build with Echo, then the honest map: Echo vs Gin, chi, and net/http, the database layer you'll add next, and one thing to build.