F.scala

  case class Foo(s: String, n: Int)

  class MyClient(url: URL) extends featherbed.Client(url) {
    override def clientTransform(client: Http.Client) = {
      client.withSessionPool.maxSize(1)
    }
  }

  val client = new MyClient(new URL("http://localhost:8766/api/"))
  val req = client.post("foo/bar")
    .withContent(Foo("hello, world", 42), "application/json")
    .accept[Coproduct.`"application/json"`.T]

  for (i <- 1 to 10000) {
    val v = Await.result { req.send[Foo]() }
    println(s"$i\t$v")
  }