'How threading works with Hystrix and Spring Boot?
Is this how hystrix works?
- Caller (tomcat) thread calls @HystrixCommand method.
- Called method is executed in a separate thread (from Hystrix specific thread pool). Caller (tomcat) thread goes in waiting state.
- In case of timeout, Hystrix will interrupt its thread and call fallback method (if there is any).
- Control goes back to caller (tomcat) thread.
Is this explanation correct? Also, I don't understand, who interrupts Hystrix thread and calls fallback method? From threads' perspective, how Hystrix maintains/monitors stats (e.g. in a specific window, how many requests failed etc)? At any point of time, how many Hystrix threads are active?
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Source: Stack Overflow
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