Bavet – A faster score engine for OptaPlanner

Drools is an extremely fast rule engine. Under the hood, OptaPlanner has used Drools as a score engine for ages.…

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How much faster is Java 17?

Java 17 (released yesterday) comes with many new features and enhancements. However, most of those require code changes to benefit…

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Static website generation with Java, Maven and JBake

Did you notice? Last week, we migrated the entire www.optaplanner.org website (1399 files) to build with Java and Maven, instead…

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Batch solving an ActiveMQ queue that contains planning problem data sets in a scalable way

If I want to solve many data sets of a planning problem every night, what architecture can easily scale out…

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How much faster is Java 15?

Java 15 was released on the 15th of September 2020 and has promised to bring with it a few performance…

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Solve the facility location problem

We have created a new quickstart that extends OptaPlanner use case portfolio with the facility location problem and also demonstrates…

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Constraint Streams – Modern Java constraints without the Drools Rule Language

Traditionally, to scale out with OptaPlanner, you had to learn DRL. No more. With the new Constraints Streams API, inspired…

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A giant leap forward with multithreaded incremental solving

OptaPlanner finally supports multithreaded incremental solving. The speedup is spectacular. Even with just a few CPU cores, it triples the…

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Java Reflection, but much faster

What is the fastest way to read a getter from a Java class without knowing the class at compilation time?…

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