Have you had a high load system at your current or previous job?

Yes, at my previous job, I participated in the development and maintenance of a high load system that processed tens of thousands of requests per second. To ensure high performance, the following approaches were used:

• Go's goroutine model for efficient parallel processing
• Use of caching (e.g., Redis) to reduce database load
• Load balancing and horizontal scaling of services
• Profiling and optimization of bottlenecks in the code

An example of using goroutines to handle requests:

func handleRequest(req Request) {
    go process(req)
}