How many requests can be processed simultaneously by R OpenCPU

Question

I am new to OpenCPU, I look at the documents at https://www.opencpu.org/, It looks that OpenCPU can process http requests concurrently? I ask so because R itself only has single-thread mode, and how many requests can it process concurrently?

Thanks.

Answer 1

If you run the Apache based opencpu-server there is no limit to the number of concurrent requests. You can tweak the number of workers in the prefork settings.

The local single-user server in R on the other hand only uses a single R process. You can still make concurrent requests, but they will automatically be queued and processed one after the other.

One way or another, you shouldn't worry about it in the client.