Added Elixir + Plug version

elixir/on_plug/.gitignore

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+/_build
+/deps
+erl_crash.dump
+*.ez

elixir/on_plug/README.md

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+Elixir + Plug
+======
+
+```
+$ mix do deps.get, compile
+$ MIX_ENV=prod iex -S mix
+$ wrk -c 64 -d 30s http://localhost:4000/10 
+```

elixir/on_plug/config/config.exs

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+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+use Mix.Config
+
+# This configuration is loaded before any dependency and is restricted
+# to this project. If another project depends on this project, this
+# file won't be loaded nor affect the parent project. For this reason,
+# if you want to provide default values for your application for third-
+# party users, it should be done in your mix.exs file.
+
+# Sample configuration:
+#
+#     config :logger, :console,
+#       level: :info,
+#       format: "$date $time [$level] $metadata$message\n",
+#       metadata: [:user_id]
+
+# It is also possible to import configuration files, relative to this
+# directory. For example, you can emulate configuration per environment
+# by uncommenting the line below and defining dev.exs, test.exs and such.
+# Configuration from the imported file will override the ones defined
+# here (which is why it is important to import them last).
+#
+#     import_config "#{Mix.env}.exs"

elixir/on_plug/lib/app_router.ex

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+defmodule AppRouter do
+  use Plug.Router
+
+  plug :match
+  plug :dispatch
+
+
+  get "/:n" do
+    n = String.to_integer(n)
+    conn |> send_resp 200, to_string(Fibonacci.get(n))
+  end
+end

elixir/on_plug/lib/fibonacci.ex

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+defmodule Fibonacci do
+  def get(0) do
+    0
+  end
+
+  def get(1) do
+    1
+  end
+
+  def get(n) when n > 0 do
+    get(n-1) + get(n-2)
+  end
+
+end

elixir/on_plug/lib/on_plug.ex

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+defmodule OnPlug do
+  use Application
+
+  def start(_type, _args) do
+    {:ok, _} = Plug.Adapters.Cowboy.http AppRouter, []
+  end
+end

elixir/on_plug/mix.exs

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+defmodule OnPlug.Mixfile do
+  use Mix.Project
+
+  def project do
+    [app: :on_plug,
+     version: "0.0.1",
+     elixir: "~> 1.0",
+     build_embedded: Mix.env == :prod,
+     start_permanent: Mix.env == :prod,
+     deps: deps]
+  end
+
+  # Configuration for the OTP application
+  #
+  # Type `mix help compile.app` for more information
+  def application do
+    [
+      mod: {OnPlug, []},
+      applications: [:cowboy, :plug]
+    ]
+  end
+
+  # Dependencies can be Hex packages:
+  #
+  #   {:mydep, "~> 0.3.0"}
+  #
+  # Or git/path repositories:
+  #
+  #   {:mydep, git: "https://github.com/elixir-lang/mydep.git", tag: "0.1.0"}
+  #
+  # Type `mix help deps` for more examples and options
+  defp deps do
+    [
+      {:cowboy, "~> 1.0.0"},
+      {:plug, "~> 0.12"}
+    ]
+  end
+end

elixir/on_plug/mix.lock

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+%{"cowboy": {:hex, :cowboy, "1.0.0"},
+  "cowlib": {:hex, :cowlib, "1.0.1"},
+  "plug": {:hex, :plug, "0.13.0"},
+  "ranch": {:hex, :ranch, "1.0.0"}}

elixir/on_plug/test/on_plug_test.exs

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+defmodule OnPlugTest do
+  use ExUnit.Case
+
+  test "the truth" do
+    assert 1 + 1 == 2
+  end
+end

elixir/on_plug/test/test_helper.exs

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+ExUnit.start()