Learning Rx by example

on YouTube ↗41m

" summary

Three concrete Rx examples for Android that actually show working code and outcomes rather than abstract promises: merging local DB and network without stale overwrites using merge + takeUntil + publish to share the network observable; an on‑scroll paginator built with a PublishSubject + flatMap/concatMap pipeline that preserves order and feeds page numbers back into the stream; and a production NTP client (true time) that does DNS resolution, fires five UDP requests per server, retries flaky calls, filters by round‑trip delay and takes the median using repeat + retry + from + compose — the library is open source and the solutions work as implemented.

AI-written summary · about

" chapters (8)

1. 0:00Introduction to Rx
2. 1:52Anatomy of an Rx call
3. 5:36Merging local and network data
4. 9:53Sharing observables
5. 14:57Pagination with subjects
6. 24:25NTP time synchronization
7. 25:39Implementing complex NTP logic
8. 41:08Q&A session

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