How to configure a fine tuned thread pool for futures?

Question

How large is Scala\'s thread pool for futures?

My Scala application makes many millions of future {}s and I wonder if there is anything I can do to opti

Answer 1

You can specify your own ExecutionContext that your futures will run in, instead of importing the global implicit ExecutionContext.

import java.util.concurrent.Executors
import scala.concurrent._

implicit val ec = new ExecutionContext {
    val threadPool = Executors.newFixedThreadPool(1000)

    def execute(runnable: Runnable) {
        threadPool.submit(runnable)
    }

    def reportFailure(t: Throwable) {}
}