Summary: Connection Pooling reduces connection overheads to web servers and Connection Capping applies a per-channel limit to maximum concurrent connections. Load balancer can serve a ‘Server Too Busy’ page if congestion is detected.
Why: Advanced load balancers should offload processing from web servers for increased capacity under load and protect them from overload when traffic spikes occur. Should congestion occur, advanced load balancers can inform Internet users of temporary congestion rather than leave sessions hanging for a poor user experience.