2.0.0

Release date

27 June 2025

Introduction

This major release introduces significant architectural changes and new features, including:

1. A redesigned user interface
2. Migration to an Ubuntu Linux base image
3. Updated architecture using HAProxy for traffic routing and supervisord for process management
4. New caching and session management layers requiring a Redis-compatible service
5. Many additional features, fixes, and improvements

For full details, including installation instructions, refer to the 2.x.x documentation.

Features

• Major UI update

  • Learn more about PactFlow's redesigned interface and improved navigation in the UI migration guide.

• Bi-Directional Contract Testing

  • A new comparison engine delivers up to 100× faster performance than the previous engine.
  • Support added for configurable behavior.

• Stub server updates

  • Now supports the Pact specification up to version 4.
  • Includes additional configuration options.

Migration notes

Please review the following updates when migrating to version 2.0.0:

1. A Redis-compatible data store is now required.
2. PACTFLOW_COOKIE_SECRET must now be at least 64 characters. More info.
3. The PACTFLOW_LOG_FORMAT environment variable is deprecated and has no effect. All logs are now output in JSON only.
4. The base image has changed from Alpine Linux to Ubuntu 24.04. If you have customized the image, review your setup and update any installed tools or libraries accordingly.

Note: There are no breaking API or database changes in this release. All existing API calls, SDKs, and CLI integrations will continue to work as expected.