Asynchronous Data Streams with Kotlin Flow
summary
Claims that Kotlin Flow is a simple, coroutine-based reactive primitive that is cold by default and uses a tiny API surface (collect/emit pair) to get backpressure, context preservation, and declarative concurrency. Demonstrates converting channels/publishers, shows a Scrabble-style benchmark where flow runs in 30ms vs 9ms for sequences and ~23ms for Java reactive libs, explains how buffer adds parallelism, and shows UI-friendly lifetime and scope integration; the implementation and numbers are concrete and reproducible.
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chapters (16)
- 0:00Intro
- 0:46RECAP ON KOTLIN COROUTINES
- 1:49Asynchronous yet sequential
- 7:07Channel is hot
- 12:04Flow is cold
- 12:31Flow is declarative
- 16:16Flow is reactive
- 17:54WHY FLOW?
- 21:04Operator avoidance
- 26:48Kotlin Flow Plays Scrabble
- 29:22FLOW IS ASYNCHRONOUS
- 31:06GOING
- 33:06FLOW EXECUTION CONTEXT
- 36:23FLOW IN REACTIVE UI
- 38:27MANAGING LIFETIME
- 42:29Status & Roadmap
