JUring – Java bindings for io_uring file I/O

In plain words

JUring provides Java bindings for io_uring, a high-performance Linux file I/O interface. It is designed for Java developers seeking faster file operations than standard Java libraries offer. The library offers two APIs: a direct one that mirrors io_uring's behavior closely, and a blocking API built for virtual threads, particularly for remote file access. The project is still in development but functional and available on GitHub.

written from the facts on this page · September 2026

From the sources

JUring provides Java bindings for io_uring. Contribute to davidtos/JUring development by creating an account on GitHub.

JUring is a Java library that provides bindings to Linux's io_uring asynchronous I/O interface using Java's Foreign Function & Memory API. JUring can deliver significant performance improvements over standard Java FileChannel operations, particularly for high-throughput file I/O workloads. All benchmarks were conducted on a Linux machine using JMH (Java Microbenchmark Harness) with 2,211 operations per test invocation. The goal of this benchmark is to open a file, read the given buffer size, and close it again. Opening and closing the files is the heavy part of this benchmark. For complete benchmark source code and detailed methodology, see the test files in the repository…from github.com

In the maker’s words, at launch

Hi HN! For the past few weeks, I've been working on bringing io_uring to Java. It started as an experiment, but slowly it became more than just that, and now trying to turn it into a proper library. After hearing talks about virtual threads and io_urings performance I wanted to build something that was faster than…

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