Additional Notes
Why should you avoid blocking calls in WebFlux?
Track: Java
Topic: Reactive Streams
Focus: Blocking the Event Loop
Java: Blocking the Event Loop
Answer
Blocking calls can freeze the event loop, causing severe performance issues.
In a WebFlux application, each request runs on a limited number of threads. If a blocking call, like Thread.sleep(), is used, it can pause the entire event loop, preventing other requests from being processed. Imagine an e-commerce server handling real-time price updates; a blocked thread would delay all updates, potentially losing sales.
In a WebFlux application, each request runs on a limited number of threads. If a blocking call, like Thread.sleep(), is used, it can pause the entire event loop, preventing other requests from being processed. Imagine an e-commerce server handling real-time price updates; a blocked thread would delay all updates, potentially losing sales.
Topics: Blocking the Event Loop Java Reactive Streams