What does "non-blocking" mean in programming?
non-blocking is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
An operation that does not stop the execution of the program while it waits for a result. Non-blocking I/O allows a single thread to handle many concurrent operations: while one request waits for a database response, the thread handles other requests. The opposite of blocking.
Example
"Node.js is non-blocking by design: it handles thousands of concurrent connections on a single thread by never waiting for I/O."
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