echo/README.md

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## Supported Go versions

Echo supports last four major releases. `v5` starts from 1.16 until there is last four major releases after that.

As of version 4.0.0, Echo is available as a [Go module](https://github.com/golang/go/wiki/Modules).
Therefore a Go version capable of understanding /vN suffixed imports is required:

- 1.9.7+
- 1.10.3+
- 1.16+

Any of these versions will allow you to import Echo as `github.com/labstack/echo/v4` which is the recommended
way of using Echo going forward.

For older versions, please use the latest v3 tag.

## Feature Overview

- Optimized HTTP router which smartly prioritize routes
- Build robust and scalable RESTful APIs
- Group APIs
- Extensible middleware framework
- Define middleware at root, group or route level
- Data binding for JSON, XML and form payload
- Handy functions to send variety of HTTP responses
- Centralized HTTP error handling
- Template rendering with any template engine
- Define your format for the logger
- Highly customizable
- Automatic TLS via Let’s Encrypt
- HTTP/2 support

## [Guide](https://echo.labstack.com/guide)

### Installation

```sh
// go get github.com/labstack/echo/{version}
go get github.com/labstack/echo/v5
```

### Example

```go
package main

import (
  "github.com/labstack/echo/v5"
  "github.com/labstack/echo/v5/middleware"
  "net/http"
)

func main() {
  // Echo instance
  e := echo.New()

  // Middleware
  e.Use(middleware.Logger())
  e.Use(middleware.Recover())

  // Routes
  e.GET("/", hello)

  // Start server
  if err := e.Start(":1323"); err != http.ErrServerClosed {
    log.Fatal(err)
  }
}

// Handler
func hello(c echo.Context) error {
  return c.String(http.StatusOK, "Hello, World!")
}
```

# Third-party middlewares

| Repository                                                                                           | Description                                                                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [github.com/labstack/echo-contrib](https://github.com/labstack/echo-contrib)                         | (by Echo team) [casbin](https://github.com/casbin/casbin), [gorilla/sessions](https://github.com/gorilla/sessions), [jaegertracing](github.com/uber/jaeger-client-go), [prometheus](https://github.com/prometheus/client_golang/), [pprof](https://pkg.go.dev/net/http/pprof), [zipkin](https://github.com/openzipkin/zipkin-go) middlewares | 
| [deepmap/oapi-codegen](https://github.com/deepmap/oapi-codegen)                                      | Automatically generate RESTful API documentation with [OpenAPI](https://swagger.io/specification/) Client and Server Code Generator                                                                                                                                                                                                          |
| [github.com/swaggo/echo-swagger](https://github.com/swaggo/echo-swagger)                             | Automatically generate RESTful API documentation with [Swagger](https://swagger.io/) 2.0.                                                                                                                                                                                                                                                    |
| [github.com/ziflex/lecho](https://github.com/ziflex/lecho)                                           | [Zerolog](https://github.com/rs/zerolog) logging library wrapper for Echo logger interface.                                                                                                                                                                                                                                                  |
| [github.com/brpaz/echozap](https://github.com/brpaz/echozap)                                         | Uber´s [Zap](https://github.com/uber-go/zap) logging library wrapper for Echo logger interface.                                                                                                                                                                                                                                              |
| [github.com/darkweak/souin/plugins/echo](https://github.com/darkweak/souin/tree/master/plugins/echo) | HTTP cache system based on [Souin](https://github.com/darkweak/souin) to automatically get your endpoints cached. It supports some distributed and non-distributed storage systems depending your needs.                                                                                                                                     |
| [github.com/mikestefanello/pagoda](https://github.com/mikestefanello/pagoda)                         | Rapid, easy full-stack web development starter kit built with Echo.                                                                                                                                                                                                                                                                          |

Please send a PR to add your own library here.

## Help

- [Forum](https://github.com/labstack/echo/discussions)

## Contribute

**Use issues for everything**

- For a small change, just send a PR.
- For bigger changes open an issue for discussion before sending a PR.
- PR should have:
  - Test case
  - Documentation
  - Example (If it makes sense)
- You can also contribute by:
  - Reporting issues
  - Suggesting new features or enhancements
  - Improve/fix documentation

## Credits

- [Vishal Rana](https://github.com/vishr) (Author)
- [Nitin Rana](https://github.com/nr17) (Consultant)
- [Roland Lammel](https://github.com/lammel) (Maintainer)
- [Martti T.](https://github.com/aldas) (Maintainer)
- [Pablo Andres Fuente](https://github.com/pafuent) (Maintainer)
- [Contributors](https://github.com/labstack/echo/graphs/contributors)

## License

[MIT](https://github.com/labstack/echo/blob/master/LICENSE)