v1.54.0

🚀 Features

🔹 Server-Side Rate Limiter Middleware

GoFr now includes a built-in Rate Limiter Middleware to protect your APIs from abuse and ensure fair resource distribution.

• Token Bucket Algorithm: Implements smooth rate limiting with configurable burst capacity.
• Per-IP Rate Limiting: Support for independent limits per client IP with trusted proxy support (X-Forwarded-For, X-Real-IP).
• Observability: Automatically tracks rate limit violations with the app_http_rate_limit_exceeded_total metric.
• Exemptions: Built-in health check endpoints (/.well-known/alive, /.well-known/health) are automatically exempt.

Usage Example

    app.UseMiddleware(middleware.RateLimiter(middleware.RateLimiterConfig{
        RequestsPerSecond: 10,
        Burst:             20,
        PerIP:             true,
    }, app.Metrics()))

🛠️ Fixes

🔹 Circuit Breaker & Health Check Refinement

Improved the reliability of the Circuit Breaker and Health Check mechanisms:

• Custom Health Endpoints: Fixed an issue where custom health endpoints were not consistently used by the circuit breaker for recovery checks.