B+-tree in java that stores to disk using memory mapped files, supports range queries and duplicate keys

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.

Diff Match Patch is a high-performance library in multiple languages that manipulates plain text.

Diff Utils library is an OpenSource library for performing the comparison / diff operations between texts or some kind of data: computing diffs, applying patches, generating unified diffs or parsing them, generating diff output for easy future displaying (like side-by-side view) and so on.

A big, fast and persistent queue based on memory mapped file.

为Docker Desktop for Mac/Windows开启Kubernetes和Istio。

A TPC-C like test tool

Generic command line non-JVM Apache Kafka producer and consumer

Native Operating System and Hardware Information

Maxwell's daemon, a mysql-to-json kafka producer