added back off and log fatal

main.go

@@ -212,13 +212,19 @@ func main() {
 
 	helper.LogInfo("INFO: Initializing database connection...")
 	var database *sql.DB
+	attempts := 0
+	backoffTimes := []time.Duration{2 * time.Second, 5 * time.Second, 10 * time.Second}
 	for {
 		database, err = db.InitDB()
 		if err == nil {
 			break
 		}
 		helper.LogError(fmt.Errorf("ERROR: error initializing database: %v", err), "database initialization error")
-		time.Sleep(2 * time.Second)
+		if attempts >= len(backoffTimes) {
+			log.Fatalf("FATAL: Could not initialize database after %d attempts: %v", attempts, err)
+		}
+		time.Sleep(backoffTimes[attempts])
+		attempts++
 	}
 
 	go collectDBMetrics(database)