Have you written or maintained high-load services?

Yes, I have experience in developing and maintaining high-load services in Go. In such projects, I faced tasks related to performance optimization, scaling, and ensuring fault tolerance.

Key points I considered:

• Efficient use of goroutines and channels for parallel request processing.
• Profiling and optimizing bottlenecks in the code.
• Using connection pools and caching to reduce database load.
• Horizontal scaling of services with load balancers.
• Monitoring and logging for quick problem detection.

Example of a simple high-load HTTP service in Go:

package main

import (
    "fmt"
    "net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hello, high load world!")
}

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

For real high-load systems, mechanisms like queues, caches, load balancing, etc., are added.