# System map — labstack/echo

> Canonical page: https://codevetter.com/unpack/echo/system-map

# System map — labstack/echo

Scanned commit 99c395d846e079d4cffd29de9298d1dd829e8b04 (2026-10-01). Generated by codevetter codevetter 1.15.0 on 2026-10-02.

Source inspection; upstream code and tests were not executed.

The repository provides an embeddable HTTP framework, with application startup illustrated in the README. The core package owns routing, request contexts, binding, responses, and server helpers; middleware supplies optional request policies and transports. State examined here consists of route registries, reusable pools, request-local maps, and an in-memory rate limiter. Deployment remains the consuming application's responsibility through net/http or StartConfig.
- go.mod declares github.com/labstack/echo/v5 and Go 1.25.0, with direct requirements on testify, x/net, and x/time; the README example imports the library, registers GET /, and starts an application-owned server. — [go.mod#L1-L16](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/go.mod#L1-L16) [README.md#L86-L119](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/README.md#L86-L119)
- Echo aggregates replaceable Binder, Renderer, Validator, JSONSerializer, IPExtractor, SchemeExtractor, HTTPErrorHandler, and Router components, alongside route hooks, slog logging, middleware chains, and a context pool. — [echo.go#L69-L119](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/echo.go#L69-L119) [echo.go#L259-L316](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/echo.go#L259-L316)
- New installs DefaultBinder, DefaultJSONSerializer, a working-directory filesystem, an overwrite-enabled DefaultRouter, DefaultHTTPErrorHandler(false), and a context-pool factory before compiling dispatch chains. — [echo.go#L400-L424](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/echo.go#L400-L424)
- DefaultRouter owns one radix-tree root whose nodes carry method handlers, plus a Routes registry; Add parses patterns and inserts static, parameter, and wildcard nodes. This differs from CLAUDE.md's description of separate trees per method. — [router.go#L59-L75](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/router.go#L59-L75) [router.go#L506-L582](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/router.go#L506-L582) [CLAUDE.md#L51-L54](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/CLAUDE.md#L51-L54)
- Context owns the request, response wrappers, cached query values, route metadata, path values, handler, logger, and request-local store. Reset clears these transient values while retaining the store allocation and path-value capacity. — [context.go#L63-L91](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/context.go#L63-L91) [context.go#L108-L156](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/context.go#L108-L156)
- Global and pre-routing middleware chains are compiled by buildRouterChains; route middleware is compiled during DefaultRouter.Add. Group.AddRoute combines group middleware with route definitions before registration. — [echo.go#L427-L443](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/echo.go#L427-L443) [router.go#L520-L534](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/router.go#L520-L534) [group.go#L205-L212](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/group.go#L205-L212)
- StartConfig creates a standard http.Server and listener, supports custom listeners and TLS configuration, and coordinates context-triggered graceful shutdown. StartTLS loads certificate inputs through fs.FS or accepts bytes, then defaults to TLS 1.2 minimum and h2 negotiation. — [server.go#L25-L60](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/server.go#L25-L60) [server.go#L71-L96](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/server.go#L71-L96) [server.go#L100-L167](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/server.go#L100-L167) [server.go#L181-L200](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/server.go#L181-L200)
- Development automation includes Makefile lint/vet/race targets, a CI race-and-coverage matrix, and a separate checks workflow for golint, staticcheck, and govulncheck. The Makefile's unversioned package prefix differs from the /v5 module declaration. — [Makefile#L1-L25](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/Makefile#L1-L25) [go.mod#L1-L3](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/go.mod#L1-L3) [.github/workflows/ci.yml#L38-L82](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/.github/workflows/ci.yml#L38-L82) [.github/workflows/checks.yml#L70-L84](https://github.com/labstack/echo/blob/99c395d846e079d4cffd29de9298d1dd829e8b04/.github/workflows/checks.yml#L70-L84)

Every claim links to its cited files at the pinned commit. Citations identify source evidence; they do not establish runtime correctness. Independent CodeVetter scan — not reviewed by upstream maintainers.

## Public product links

- [CodeVetter](https://codevetter.com/)
- [Download](https://codevetter.com/download)
- [Documentation](https://codevetter.com/docs/)
- [Source](https://github.com/Codevetter/codevetter)