Reactive programming and Hystrix fault tolerance

on YouTube ↗40m

" summary

Shows building a reactive client with RxJava Observables and wrapping remote calls in Hystrix commands and circuit breaker units. Demonstrates pipelines: fetch category → product IDs → flatMap to product and reviews, generate three review items per product, and stop the stream when a value exceeds 100. Uses operators (map, flatMap, zip, merge), schedulers (computation, io), and onErrorResume to return an empty list as fallback. Hystrix dashboard reports percentiles and latency; at ~50% failure the breaker opens and fallbacks are served.

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" chapters (9)

1. 0:00Reactive programming intro
2. 1:05Reactivity overview
3. 8:38Core operations
4. 11:30Hot vs cold observables
5. 12:33RxJava schedulers
6. 16:36Hystrix fault tolerance
7. 24:59Python parallelism example
8. 33:58onSubscribe subscription
9. 34:19Conclusion

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