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Release Notes 6.5

We are happy to announce a 6.5 Final release of OptaPlanner. OptaPlanner is a lightweight, embeddable planning engine written in Java™ to solve AI constraint optimization problems efficiently. Use cases include Vehicle Routing, Employee Rostering, Maintenance Scheduling, Task Assignment, School Timetabling, Cloud Optimization, Conference Scheduling and many more.

Download
Download
8.5.0.Final
Documentation
Documentation
8.5.0.Final
Status of OptaPlanner
  • Stable: Lots of unit, integration and stress tests
  • Reliable: Used across the world in production
  • Scalable: To billions of constraint matches with minimal RAM and CPU time
  • Documented: Read the detailed reference manual and the many examples
  • Open Source: Apache License 2.0
Note for Red Hat Decision Manager customers

The RHDM version differs from the OptaPlanner version:

RHDM version OptaPlanner version
7.7 7.33
7.8 7.39
7.9 7.44

New and noteworthy

Bugs fixed

We’re focusing all forward development on 7.0, which you can find in the download section. So this release only contains bugfixes.

Upgrade your code to 6.5

The best and easiest way to upgrade to this new version of OptaPlanner is by following the upgrade recipe.

New features in older releases

Read the previous release notes to learn about the new and noteworthy in previous releases.

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Latest release
  • 8.5.0.Final released
    Thu 15 April 2021
Paid support and consulting

Want to talk to the experts? Red Hat offers certified binaries with enterprise consulting. Contact optaplanner-info for more information.

Upcoming events
  • SouJava MOTU
    Worldwide - Thu 15 April 2021
    • Planejamento de Recursos com OptaPlanner by Karina Varela, Otávio Santana
Add event / Archive
Latest blog posts
  • Batch solving an ActiveMQ queue that contains planning problem data sets in a scalable way
    Thu 25 March 2021
     Radovan Synek
  • Optimizing COVID-19 vaccination appointment scheduling
    Thu 4 March 2021
     Paul Brown
  • How much faster is Java 15?
    Tue 26 January 2021
     Michal Tomčo
  • Solve the facility location problem
    Fri 9 October 2020
     Jiří Locker
  • OptaPlanner Week 2020 recordings
    Mon 7 September 2020
     Geoffrey De Smet
  • Let’s OptaPlan your jBPM tasks (part 1) - Integrating the two worlds
    Fri 3 July 2020
     Walter Medvedeo
  • AI versus Covid-19: How Java helps nurses and doctors in this fight
    Fri 8 May 2020
     Christopher Chianelli
Blog archive
Latest videos
  • YT Unit testing constraints
    Tue 9 March 2021
     Lukáš Petrovický
  • YT Maintenance scheduling
    Wed 24 February 2021
     Julian Cui
  • YT Vaccination appointment scheduling
    Wed 3 February 2021
     Geoffrey De Smet
  • YT Shadow variables
    Tue 19 January 2021
     Geoffrey De Smet
  • YT Domain modeling and design patterns
    Tue 17 November 2020
     Geoffrey De Smet
  • YT Quarkus insights: AI constraint solving
    Tue 20 October 2020
     Geoffrey De Smet
  • YT AI in kotlin
    Wed 23 September 2020
     Geoffrey De Smet
Video archive

KIE projects

  • Drools rule engine
  • OptaPlanner constraint solver
  • jBPM workflow engine

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Code

  • Build from source
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  • License (Apache-2.0)
  • Release notes
  • Upgrade recipes
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