hey just a quick question since i'm not to firm wi...
# announcementss
silas.schwarz
11/15/2018, 9:23 AMhey just a quick question since i'm not to firm with coroutines yet. how would you tackle something that you want to do in parallel (network request) but need to assure that there are never more than 4 requests in parallel (threadpoolexecutor but in coroutines). i've seen that so can assign work to pools (CommonPool) etc but can you create your own pool and define it's parallelism ?! thx 😙
g
gildor
11/15/2018, 9:24 AMBetter to use worker pool pattern for that
gildor
11/15/2018, 9:24 AMusing CommonPool, or any other custom dispatcher will not work for any async API that doesn’t block threads or has own thread pool (like every http client with async api)
gildor
11/15/2018, 9:26 AMThere is an issue to provide built in implementation of working pool
https://github.com/Kotlin/kotlinx.coroutines/issues/172
gildor
11/15/2018, 9:29 AMBut in some cases, like for example in case HTTP client, you have some APIs to limit concurrency on library level, some http client allow to do that, also providing more smart limiting, based on host, network state etc
gildor
11/15/2018, 9:29 AMbut approach with working pool is universal solution ffor this
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silas.schwarz
11/15/2018, 9:30 AMthank you very much for all the input!
silas.schwarz
11/15/2018, 9:31 AM🙇♂️
g
gildor
11/15/2018, 9:32 AM👍
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silas.schwarz
11/15/2018, 9:33 AMi used rxkotlin and okhttp which makes it easy to enforce only 4 in parallel but i was trying to build something in plain kotlin and coroutines as an alternative. thanks
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gildor
11/15/2018, 9:33 AMokhttp has built in mechanism to limit concurrency
gildor
11/15/2018, 9:34 AM4 Views