swelham

swelham

GenStage examples or suggestions

I’m trying to put together a plan for a library that I am working on whereby I need to provide an interface that allows the client to asynchronously call out to external APIs (HTTP endpoints in this case). I also need to make sure that this is rate limited to adhere to the rate limiting on the externals APIs.

From what I have read GenStage sounds perfect for this and using a ConsumerSupervisor I would be able to dynamically start workers for each request as they come in and let GenStage limit the number of workers it will start concurrently.

Does anyone know of any good examples of this type of setup in practice?

I am trying to get my head around how this all fits together and feel a real world example would help me out here.

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mechabyte

mechabyte

Discord published a blog post covering how they use genstage to buffer calls to Firebase APIs. It has some code examples as well as performance statistics.

swelham

swelham

In addition to the discord article linked above, I came across this talk which is probably the best explanation and demo of an end to end genstage setup I have come across.

Well worth a watch (especially if you’re new to genstage)

yburyug

yburyug

You can try my tutorial here or check out the Elixir School lesson

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ybycode

ybycode

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