chore: improve proxy rate limit

code refactoring

goma.yml

@@ -9,7 +9,7 @@ gateway:
   readTimeout: 15
   # Proxy idle timeout
   idleTimeout: 60
-  # Proxy rate limit, it's In-Memory Token Bucket
+  # Proxy rate limit, it's In-Memory IP based
   # Distributed Rate Limiting for Token based across multiple instances is not yet integrated
   rateLimiter: 0
   accessLog:    "/dev/Stdout"
@@ -18,6 +18,7 @@ gateway:
   disableRouteHealthCheckError: false
   # Disable display routes on start
   disableDisplayRouteOnStart: false
+  disableKeepAlive: false
   # interceptErrors intercepts backend errors based on defined the status codes
   interceptErrors:
    - 405