Introducing Asynchronous I/O in Neo4j using io_uring

Neo4j's latest release introduces asynchronous I/O capabilities using io_uring on Linux, marking a significant evolution in its I/O handling approach. This update allows Neo4j to perform multiple I/O operations concurrently without blocking execution, which is particularly beneficial in cloud environments with high I/O latencies. Initially, asynchronous I/O support is implemented in the background page evictor and checkpointer, offering potential performance improvements in these components. While not enabled by default, asynchronous I/O can be activated by meeting specific prerequisites such as using Neo4j Enterprise Edition on a Linux system with the liburing library and JDK 25 or later. The new feature aims to enhance database performance by improving concurrency, throughput, and system resource utilization. As asynchronous I/O capabilities expand, Neo4j is poised for greater performance and scalability in future iterations.

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