Stars
Apache Pulsar - distributed pub-sub messaging system
JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern
MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.
Distributed lock for your scheduled tasks
Benchmark comparing serialization libraries on the JVM
Persistent cluster-friendly scheduler for Java
DAO oriented database mapping framework for Java
A fast key/value store that is efficient for high-volume random access reads and writes.
Java 8+ zero-dependency port of SymSpell: 1 million times faster through Symmetric Delete spelling correction algorithm