---
title: "Async I/O — Database Glossary | Xata"
description: "Asynchronous input/output allowing PostgreSQL to issue multiple storage requests concurrently rather than waiting for each to complete sequentially. Imp..."
source: "https://xata.io/glossary/async-io"
---

# Async I/O

PostgreSQL

Asynchronous input/output allowing PostgreSQL to issue multiple storage requests concurrently rather than waiting for each to complete sequentially. Implemented in PostgreSQL 18 (2025) via io_method=io_uring on Linux and io_method=worker on other platforms. Significantly improves throughput on NVMe and SSD storage.

Related terms

NVMe-oF

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