Cracking the Concurrent Mode
summary
Implements React‑style concurrent rendering from scratch for Brahmos.js, showing concrete choices: time‑slicing into 5ms slots driven by message channel + rIC, background work via work‑in‑progress trees, timestamped updates to discard stale changes, retry/backoff for low‑priority updates, and specific transition merging rules (merge same startTransition calls, queue different transitions). Demonstrates when work is reused, when it’s thrown away, and how sync input updates preempt deferred renders so UI remains responsive.
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chapters (10)
- 0:00Introduction
- 1:17What is Concurrent Mode
- 3:30Time Slicing
- 7:57Background Rendering
- 10:29Update Priority
- 11:59Consistency
- 14:49Transitions
- 17:30Complexities
- 22:25Scheduling
- 25:46Multiple Transitions
