From ea1f8bd5b3c363dd3639258fbf3559831951d38d Mon Sep 17 00:00:00 2001
From: Tobias <tobias@tobiastime.xyz>
Date: Sun, 10 May 2026 16:18:29 +0100
Subject: [PATCH] Update README.md

---
 README.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/README.md b/README.md
index 6228b46..40f0d5a 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,26 @@ Consequently I began to run my own nameservers (ns1/2.tobiastime.xyz) on two hea
 - PowerDNS
 - Bash
 
+## Workflow
+```
+Cronjob triggers ipsender script on Nginx server
+        ↓
+Nginx server obtains public dynamic IP via curl or dig
+        ↓
+IP is written to a local file
+        ↓
+IP file is transferred to master nameserver via SFTP utilizing a least privileged user
+        ↓
+Cronjob triggers "BashDDNS" script on master nameserver
+        ↓
+BashDDNS checks newly received IP address against current A record IP on file
+        ↓
+Does the new IP match the current record?
+  ↓ Yes               ↓No 
+  Do nothing          Update domain's A record 
+                      Increase SOA serial so slave is notified
+                      Write new IP to stored record file
+```
 
 ## Prerequisites