PoolSize in Ecto MongoDB

Hi,

I’m using Ecto Mongodb and I want to configure a custom pool size in my plug project. I was testing a few solutions but i can’t do it successfully. Do you can help me?

This is my config.exs:

use Mix.Config

import_config "#{Mix.env()}.exs"

config :feature_flags, FeatureFlags.Repo,
       adapter: Mongo.Ecto,
       mongo_url: "mongodb://ip/db?"

This is my mix.exs:

defmodule FeatureFlags.MixProject do
  use Mix.Project

  def project do
    [
      app: :feature_flags,
      version: "0.1.0",
      elixir: "~> 1.9",
      start_permanent: Mix.env() == :prod,
      deps: deps()
    ]
  end

  def application do
    [
      extra_applications: [:logger, :plug_cowboy, :mongodb, :poolboy,:mongodb_ecto, :ecto],
      mod: {FeatureFlags.Application, []}
    ]
  end

  defp deps do
    [
      {:plug_cowboy, "~> 2.1"},
      {:poison, "~> 3.1"},
      {:mongodb, ">= 0.4.9"},
      {:mongodb_ecto, "~> 0.1"},
      {:poolboy, ">= 1.5.2"}
    ]
  end
end

This is my applications.exs:

defmodule FeatureFlags.Application do
  @moduledoc "OTP application spec for Feature Flags"

  use Application

  def start(_type, _args) do
    import Supervisor.Spec
    IO.inspect(DBConnection.Poolboy)


    children = [
      worker(FeatureFlags.Repo, []),
      # Use Plug.Cowboy to register the endpoint
      Plug.Cowboy.child_spec(
        scheme: :http,
        plug: FeatureFlags.AppRestEntryPoint,
        options: [port: Application.get_env(:feature_flags, :port)]
      )
    ]

    opts = [strategy: :one_for_one, name: FeatureFlags.Supervisor, pool_size: 40]
    Supervisor.start_link(children, opts)
  end
end

defmodule FeatureFlags.Repo do
  use Ecto.Repo, otp_app: :feature_flags
end

Thanks for your help.