Update frequency

main.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"net/http"
+	"os"
+	"strconv"
+	"sync/atomic"
+)
+
+func (s *server) handler(w http.ResponseWriter, r *http.Request) {
+	if newValue := s.counter.Add(1); newValue%s.frequency == 0 {
+		panic("crash after 10 requests")
+	}
+
+	w.WriteHeader(200)
+}
+
+type server struct {
+	counter   *atomic.Uint64
+	frequency uint64
+}
+
+func main() {
+	ev := os.Getenv("HTTP_CRASH_FREQUENCY")
+	frequency, err := strconv.ParseUint(ev, 10, 64)
+	if err != nil {
+		frequency = 10
+	}
+
+	s := &server{
+		counter:   &atomic.Uint64{},
+		frequency: frequency,
+	}
+
+	http.HandleFunc("/", s.handler)
+	http.ListenAndServe(":8080", nil)
+}