async-pool | Run multiple promise-returning & async functions | Reactive Programming library
kandi X-RAY | async-pool Summary
kandi X-RAY | async-pool Summary
Run multiple promise-returning & async functions with limited concurrency using native ES6/ES7
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QUESTION
I am interested in creating a pool for asynchronous function calls (they will be HTTP requests) however I would like to do everything in a single thread. The reason for this is that spawning multiple threads will waste resources (the thread does nothing but wait for the response).
...ANSWER
Answered 2021-Apr-11 at 04:48Here I've Implemented a pool using basic asyncio
functions.
WORKING:
- pool starts with maxsize tasks
- when first task completes, it adds next task to queue and prints its result
- similarly for each single task completes, it adds another tasks until maxsize
Code:
QUESTION
My code needs to fire multiple threads and keep track of which have finished and which are still running. I as planning on using waitAny
or waitAnyCatch
, but was thrown off by the following in the documentation
If multiple Asyncs complete or have completed, then the value returned corresponds to the first completed Async in the list.
If that is really the case, how does one ever keep track of running / exited threads reliably?
Here's my simplified code:
...ANSWER
Answered 2020-Jan-22 at 04:01Here's a program that launches 1000 asyncs all set to terminate within a second and waits for them all in a loop. Compiled with ghc -O2 -threaded
and run with +RTS -N
, it runs in about 1.5 seconds, and none of the asyncs gets "lost":
QUESTION
I have configured two different thread pools, one for @Scheduled
and other for @Async
. However, I notice that the thread-pool for @Async
is not being used.
Here is the Scheduler configuration
...ANSWER
Answered 2018-Jan-12 at 23:11If you call @Async
methods from the same class
they are declared you are effectively bypassing Spring's proxy mechanism and that is why your example is not working. Try calling the method from a separate class
annotated with @Service
or any of the other @Component
types.
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