io_uring
io_uring is a high-performance asynchronous I/O interface for Linux that provides a more efficient alternative to traditional I/O models like epoll and AIO. It uses a shared ring buffer between the kernel and user space to minimize system call overhead and context switches, enabling faster and more scalable I/O operations. This technology is particularly beneficial for applications requiring high-throughput I/O, such as web servers, databases, and network services.
Developers should learn io_uring when building applications that demand low-latency and high-throughput I/O, such as real-time data processing, high-performance web servers (e.g., Nginx, Envoy), or database systems (e.g., PostgreSQL, Redis). It reduces CPU overhead and improves scalability by batching I/O operations and minimizing kernel-user space transitions, making it ideal for modern cloud-native and edge computing environments where efficiency is critical.