https://laughingsquid.com/the-open-enigma-project-an-open-source-replica-of-an-enigma-message-encoding-machine/
The Open Enigma Project, An Open Source Replica of an Enigma Message-Encoding Machine
the opensource replicaenigmaproject
https://www.linode.com/docs/guides/configure-source-replica-replication-in-mysql/
Configure Source-Replica Replication in MySQL | Linode Docs
This guide explains how to configure source-replica data replication in the popular MySQL database application to keep copies of your database for emergencies.
source replicaconfigurereplicationmysqllinode