Lucee Documentation

Welcome to the Official Lucee Server Documentation

Lucee is a high performance, open source, ColdFusion / CFML server engine, written in Java.

The documentation here aims to provide a thorough reference and guide to all things to do with the Lucee Server. This includes reference material on both Functions and Tags as well as more in-depth articles in the Guides and tutorials section.

Our documentation is an open source and community driven effort. It is also a constant work in progress and we always welcome feedback, improvements and suggestions. You can find out more about contributing to the Documentation in the About the docs section.

To find out more about getting involved as a developer with Lucee, checkout our Git Repo

Lucee 6.1

Lucee 6.1 is current stable release of Lucee.

Targeting better performance and reduced memory usuage, Lucee 6.1 has full support for Java 11 and 21.

Lucee 6.0

Lucee 6 .

Highlights include, reduced size, faster startup, single context mode, JSON based configuration and much more.

As a Major Release, Lucee 6 does include some potential BREAKING CHANGES, for a range of security reasons and better compatibility with Adobe ColdFusion, they are all documented in Jira under an Epic, All Breaking changes in Lucee 6

Lucee 5.4 (LTS)

Lucee 5.4 is our LTS stable release and is recommended for production systems. More details are available in the Lucee 5 section of these docs.

As a LTS release, Lucee 5.4 will receive security updates and critical regression fixes until 2026, but is no longer actively maintained.

Getting help

Lucee 5.3

Lucee 5.3 (and older) now is no longer actively developed. It's time to upgrade to 5.4 LTS or 6 (reommended)

Lucee 4.5

Lucee 4.5 is the legacy stable release of the Lucee platform. It is End of Life (EOL) and no longer supported.

Java API Docs

The Java API documentation of Lucee Server's loader interfaces, are published at https://www.javadoc.io/doc/org.lucee/lucee/latest/index.html.

Lucee on YouTube

We also have a channel on YouTube where you can find further tutorials and tips: Lucee YouTube Channel