Can you explain what HAProxy is and what it is used for?

HAProxy is a high-performance software load balancer and proxy server for TCP and HTTP applications. It is used to distribute incoming traffic among multiple servers, which increases the fault tolerance and scalability of applications.

Main tasks of HAProxy:

• Load balancing between servers (e.g., web servers)
• Ensuring high availability (HA) through server health monitoring and automatic exclusion of unavailable servers
• Improving performance by distributing requests
• SSL termination and proxying

Example of use: you have several web servers, and you want users to be evenly distributed among them. HAProxy accepts all requests and redirects them to available and healthy servers.