Adding healthcheck handler

main.go

@@ -33,7 +33,7 @@ func PurgeHandler(w http.ResponseWriter, r *http.Request) {
     url := r.URL.String()
     status := SendToVarnish(url)
     if status != "200 Purged" {
-        w.WriteHeader(http.StatusMethodNotAllowed)
+        w.WriteHeader(405)
     }
     io.WriteString(w, status)
 }
@@ -63,7 +63,13 @@ func SendToVarnish(url string) string {
     return status
 }
 
+// HealthHandler handles healthcheck requests and return 200.
+func HealthHandler(w http.ResponseWriter, r *http.Request) {
+    io.WriteString(w, "OK")
+}
+
 func main() {
     http.HandleFunc("/", PurgeHandler)
+    http.HandleFunc("/healthcheck", HealthHandler)
     log.Fatal(http.ListenAndServe(":6081",nil))
 }