The new weights for backend servers take effect immediately after the weights are configured. Connections that have been established with backend servers will not be affected.
If the weight of a backend server is changed to 0, the new weight does not take effect immediately, and requests are still routed to this backend server. This is because a persistent connection is established between the load balancer and the backend server and requests are routed to this server until the connection times out.
- TCP and UDP listeners: Persistent connections are disconnected after the idle timeout duration expires.
- HTTP and HTTPS listeners: Persistent connections are disconnected after the response timeout duration expires.