Asynchronous programming with Kotlin coroutines in Spring

on YouTube ↗49m

" summary

Shows exactly what changes let synchronous Spring apps become nonblocking: add suspend to methods, flip dependency from Spring MVC to Spring WebFlux, and use the spring-kotlin-coroutine support library (add enableCoroutine). Explains argument/return-value resolvers for the compiler-added Continuation, using CoroutineWebClient instead of WebClient, coroutine repositories, coroutine-aware caching, suspending event listeners and custom CoroutineContext/dispatchers for dedicated thread pools. Notes limits: no reactive SQL support yet, thread‑locals and transactions don’t work and stack traces span threads.

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" chapters (13)

1. 0:00Asynchronous programming with coroutines
2. 3:22Synchronous blocking problems
3. 10:27Spring needs coroutine handling
4. 15:41Kotlin coroutines library for Spring
5. 16:25Blocking code to coroutines
6. 21:16CoroutineContext for threads
7. 24:45Annotations for CoroutineContext
8. 29:00Non-blocking I/O with WebFlux
9. 31:49RestTemplate to WebClient
10. 36:08Reactive repositories
11. 40:17Caching for suspending functions
12. 42:28Migrating to async Spring
13. 44:36Q&A

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