Distributed Locking in Mule

1. Distributed Locking Mule
Mule provides the ability to create locks for synchronizing
access to resources within Mule components. To manage
concurrent access to resources within a server cluster, Mule
provides a lock factory which custom components – such as
custom transformers and DevKit-built components – access
programmatically.
With the locks in place, you can deploy code in a single mule
server or a Mule cluster without causing any issues with
resource synchronization. Further, Mule’s locking system
offers a simple API to access shared locks.

2. Distributed Locking Mule - Flow

3. Distributed Locking Mule - Java

4. Distributed Locking Mule – Flow
Contd…
• Business logic inside try block will be executed
Synchronously
• Java Transform component to apply locking
• Extends “AbstractMessageTransformer”
(org.mule.transformer.AbstractMessageTransformer)
to access muleContext Object
• Create Lock (java.util.concurrent.locks.Lock) Object
for lockid “1234”
• Used lock() to get lock
• Used unlock() to release the lock

5. Distributed Locking Mule - XML

6. Distributed Locking Mule - XML