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Software → Programming

Asynchronous Programming

A programming model where operations can start and complete later without blocking the current flow of execution.

Motivation

Asynchronous programming solves the problem of waiting on slow operations, especially I/O, without blocking useful work.

Where it fits

It belongs to programming and is common in servers, browsers, APIs, and event-driven systems.

Mental model

Async code lets a program start work, pause while waiting, and resume later when the result is ready.

Common mistakes

Thinking async means faster CPU execution.
Forgetting error handling across async boundaries.
Creating unstructured async flows that are hard to reason about.