Gin

Gin is the most popular Go web framework, known for its martini-like API and performance (httprouter). v1.10 (2025) adds structured logging and better binding.

When to Use

• REST APIs: The industry standard for Go microservices.
• Performance: 40x faster than Martini.
• Middleware Ecosystem: Massive library of plugins.

Core Concepts

Router

Radix tree based routing. r.GET("/ping", handler).

Context (c *gin.Context)

Holds request, response, and metadata.