Mihirsinh Chauhan

Middleware is like the glue that holds a web application together, acting as an intermediary layer that processes requests and responses between a client (e.g., a browser or mobile app) and the server's core logic. Think of it as a pipeline where HTTP requests pass through a series of steps - each handled by a middleware component - before reaching the final endpoint or returning a response to the client.

"github.com/gin-gonic/gin"// Secret key for signing JWTs (store securely in production, e.g., env variable) // Mock user database { var req LoginRequest// Create JWTc.JSON(http.StatusOK, gin.H{"token": tokenString})// Middleware to authenticate JWT tokenString := strings.TrimPrefix(authHeader, "Bearer ") if err != nil || !token.Valid { // Attach claims to context for downstream use// Middleware to enforce admin role // Public route: Login to get JWT// Protected routes...