feat: add Redis based rate limiting for multiple instances

internal/middleware/var.go

@@ -17,7 +17,17 @@
 
 package middleware
 
+import (
+	"github.com/go-redis/redis_rate/v10"
+	"github.com/redis/go-redis/v9"
+)
+
 // sqlPatterns contains SQL injections patters
 const sqlPatterns = `(?i)(union|select|drop|insert|delete|update|create|alter|exec|;|--)`
 const traversalPatterns = `\.\./`
 const xssPatterns = `(?i)<script|onerror|onload`
+
+var (
+	Rdb     *redis.Client
+	limiter *redis_rate.Limiter
+)