The Runtime Theory

topic / event-loops-and-async

Event Loops and Async Execution

Separate waiting, queued work, callbacks, and concurrent execution.

Understand promises, futures, event-loop scheduling, task queues, non-blocking I/O, worker pools, and the limits of asynchronous syntax.

1 article · 1 video · 1 trace · 1 request flow · 1 interview · 5 total

Articles

event loops and asyncSep 25, 2026

Async Code Still Runs on an Event Loop

An event loop repeatedly selects ready work and runs callbacks or tasks.

Request Flows

request flow · 5 stagesHow Async Code Still Runs on an Event Loop worksAn interactive concept flow for async code still runs on an event loop, from its assumptions through the main operation and boundary checks.

Videos

event loops and asyncSep 25, 2026

Video lesson: Async Code Still Runs on an Event Loop

Recording brief and narration plan for a visual lesson on async code still runs on an event loop.

Traces

trace 01 · runtimeTrace: Async Code Still Runs on an Event LoopFollow the key state changes and boundary checks involved in async code still runs on an event loop.

Interviews

medium · t2Explain Async Code Still Runs on an Event LoopExplain the model, execution steps, complexity, and limits of async code still runs on an event loop.

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