Non-blocking I/O
Non-blocking I/O is a programming paradigm where input/output operations do not halt the execution of a program while waiting for data. Instead, the program can continue performing other tasks, and the I/O operation is handled asynchronously, often using callbacks, promises, or event loops. This approach is crucial for building high-performance, scalable applications that need to handle many concurrent connections efficiently.
Developers should learn and use non-blocking I/O when building applications that require high concurrency and low latency, such as web servers, real-time systems, or data-intensive services. It is particularly valuable in environments like Node.js or Nginx, where handling thousands of simultaneous connections without blocking threads is essential for performance and resource efficiency.