Section Overview
Async
Synchronous and deferred event flows, queues, and SSE-style interactions.
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Route Map
Each feature page pairs live output with the source that produced it.
Event Flow
5Async
Execution Arena
Launch the same backend intent in sync, Swoole async, and queued modes, then watch the proof arrive over SSE.
Async
Sync Events
Dispatch an event and all sync listeners run before the response is sent.
Async
Deferred Handler
Heavy work runs after the response is sent, so the user gets instant feedback.
Async
Queued Handler
Events survive restarts and scale across workers, backed by a durable message queue.
Async
Server-Sent Events (SSE)
Live Server-Sent Events demo: one long-lived HTTP connection streams real backend events to the browser via EventSource. No WebSockets, plain PHP.