IPC between multiple Java processes/JVMs with nanosecond latency

In plain words

Mappedbus is a Java inter-process communication library that enables fast message passing between multiple JVMs using memory-mapped files. It supports multiple concurrent writers while maintaining message ordering and achieves nanosecond-level latency, with throughput around 14 million messages per second. The library creates no objects after initialization, eliminating garbage collection overhead. It is designed for applications requiring low-latency, high-throughput communication between Java processes.

written from the facts on this page · September 2026

From the sources

Mappedbus was inspired by Java Chronicle with the main difference that it's designed to efficiently support multiple writers – enabling use cases where the order of messages produced by multiple processes are important. The throughput (on a laptop, i7-4558U @ 2.8 GHz) between a single producer writing at full speed and a single consumer is around 14 million messages per second (a small message consisting of three integer fields), and the average read/write latency is around 70 ns per message. Mappedbus does not create any objects after startup and therefore has no GC impact. Download the zip file which contains mappedbus.jar in the dist folder (or clone the project and build it from source…from mappedbus.io

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