Mule 4 for Mule 3 Users
Mule 4 improvements make it easier to learn, develop, and manage than Mule 3. For an overview of these capabilities, you should read What’s New in Mule 4.
This documentation describes the differences between Mule 3 and Mule 4, indicates when you should migrate to Mule 4, and shows what it takes to migrate apps manually. It includes information on these topics:
Introduction to Mule 4: An overview of Mule 4 for those who already know Mule 3.
Preparing for a Migration: Steps to think about before migrating a Mule app.
About the Migration Process: An overview of the major steps involved in a migration.
Migration Examples: End-to-end examples that show the before (Mule 3) and after (Mule 4) syntax used for Mule apps.
More in-depth migration details:
|MuleSoft will be releasing a tool to help automatically update applications to Mule 4 soon. Unless there is some urgent need to migrate now, we recommend that for now only use Mule 4 for new projects and only use this guide as a learning tool for existing Mule 3 users.|
This guide should apply to all 3.x versions. However, the 3.x examples use Mule 3.9.