Have you used tools for load balancing between servers?

Yes, I have used load balancing tools such as:

• Nginx — often used as a reverse proxy and load balancer, supporting various algorithms (round-robin, least connections, etc.).
• HAProxy — a specialized load balancer with high performance and flexible configuration.
• AWS Elastic Load Balancer (ELB) — a cloud solution for automatic traffic distribution.

These tools help evenly distribute incoming requests across multiple servers, increasing system fault tolerance and scalability.