From 3d5287558808ccbf90ec96b2f149741f24d9c983 Mon Sep 17 00:00:00 2001
From: Ulf Gebhardt <ulf.gebhardt@webcraft-media.de>
Date: Thu, 15 Dec 2022 13:05:59 +0100
Subject: [PATCH] external semaphore transactions lock file

---
 backend/src/util/TRANSACTIONS_LOCK.ts | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 backend/src/util/TRANSACTIONS_LOCK.ts

diff --git a/backend/src/util/TRANSACTIONS_LOCK.ts b/backend/src/util/TRANSACTIONS_LOCK.ts
new file mode 100644
index 000000000..847386e4d
--- /dev/null
+++ b/backend/src/util/TRANSACTIONS_LOCK.ts
@@ -0,0 +1,4 @@
+import { Semaphore } from 'await-semaphore'
+
+const CONCURRENT_TRANSACTIONS = 1
+export const TRANSACTIONS_LOCK = new Semaphore(CONCURRENT_TRANSACTIONS)