Backend Technologies · Go
Echo — Free Learning Resources
Free, printable resources for Echo — practice problems, quick-reference cheatsheet, and an interview prep sheet. No sign-up required.
Echo — Practice Worksheet
Structured exercises and problems to build hands-on Echo skills. Work through key concepts step by step.
Echo — Cheatsheet
One-page quick-reference for Echo — key syntax, commands, patterns, and best practices at a glance.
Echo — Interview Sheet
Top Echo interview questions with concise answers. Get ready for any technical round with this focused prep sheet.
About Echo
Echo is a high-performance, extensible, minimalist Go web framework. It provides a fast router, middleware support, data binding, and template rendering — with a clean API that closely mirrors standard Go HTTP idioms. Echo is widely used for building REST APIs and microservices in Go.
EchoCheat Sheet — What's Covered
- ✓Routing — route groups, named routes, and path parameters
- ✓Middleware — built-in middleware and custom middleware with e.Use()
- ✓Request binding — BindJSON, BindQuery, and custom binders
- ✓Error handling — HTTPError and custom error handler
- ✓Context — echo.Context methods for reading requests and writing responses
Frequently Asked Questions — Echo
How does Echo routing work?
Register routes with e.GET('/users/:id', handler). Group related routes with g := e.Group('/api/v1') and add middleware to the group. Named routes allow URL generation with e.Reverse('routeName', params). Echo's router is based on a radix tree for fast matching.
How do you bind request data in Echo?
Use c.Bind(&req) to automatically bind JSON, form, or query params to a struct based on Content-Type. Add validate tags and call c.Validate(&req) with a registered validator (e.Validator = &CustomValidator{}) for input validation.
How does Echo's error handling work?
Return echo.NewHTTPError(http.StatusBadRequest, 'message') from handlers. Echo calls the registered error handler (e.HTTPErrorHandler) which formats the response. Set a custom handler for consistent JSON error responses across all routes.
How do you add middleware in Echo?
e.Use(middleware.Logger(), middleware.Recover()) adds global middleware. Apply to route groups with g.Use(authMiddleware). Apply to individual routes with e.GET('/protected', handler, authMiddleware). Echo middleware signature is func(echo.HandlerFunc) echo.HandlerFunc.
How does Echo compare to Gin?
Both are high-performance Go frameworks with similar benchmarks. Echo has a slightly cleaner API and better built-in support for HTTPS, HTTP/2, and WebSocket. Gin has more middleware in the ecosystem. The choice between them is largely preference.
Who Is This For?
Go developers building REST APIs or microservices who want a feature-rich but lightweight framework with a gentle learning curve.