How many write requests per second were received?

To determine the number of write requests per second to data in Go, metrics and monitoring are usually used. If you have a counter for writes, you can measure its change over a second. For example, using the expvar package or third-party libraries for metrics (Prometheus, OpenTelemetry).

Example with a simple counter and measuring requests per second:

package main

import (
    "fmt"
    "sync/atomic"
    "time"
)

var writeCount uint64

func recordWrite() {
    atomic.AddUint64(&writeCount, 1)
}

func main() {
    // Simulate writes
    go func() {
        for {
            recordWrite()
            time.Sleep(10 * time.Millisecond) // 100 writes per second
        }
    }()

    ticker := time.NewTicker(time.Second)
    defer ticker.Stop()

    var prevCount uint64
    for range ticker.C {
        current := atomic.LoadUint64(&writeCount)
        fmt.Printf("Write requests per second: %d\n", current-prevCount)
        prevCount = current
    }
}

Thus, you can track the number of write requests per second by measuring the change in the counter over a time interval.