Remove Redis dep, replace w/ native Elixir lib

This removes the dependency on Redis for core app functionality. Rather
than using the key/value store provided by Redis, Farside now uses a
key/val store provided by [cubdb](https://github.com/lucaong/cubdb) for
identical functionality but without reliance on a non-Elixir service.

This solution was chosen instead of ets, because storing instance data
in memory leads to a period of broken functionality whenever the app
restarts and hasn't re-populated instance data yet. It was also chosen
instead of dets, because the documentation for dets was pretty hard to
understand at first glance.

Tests and the CI build were updated to reflect the removed dependency on
Redis.

New environment variable `FARSIDE_DATA_DIR` can be used to point to a
directory where the instance data can be stored by cubdb.

Co-authored-by: Jason Clark <mithereal@gmail.com>

11 files changed, 45 insertions, 130 deletions

diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index e5439f3..8adbd87 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -28,9 +28,6 @@ jobs:
         key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
         restore-keys: ${{ runner.os }}-mix-
 
-    - name: Start Redis
-      uses: supercharge/redis-github-action@1.2.0
-
     - name: Install dependencies
       run: mix deps.get
 
diff --git a/.gitignore b/.gitignore
index e4f7466..f83d69f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@ erl_crash.dump
 *.rdb
 .idea/
 *.iml
+*.cub
diff --git a/README.md b/README.md
index c847aaf..8ca013b 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ distribute traffic more evenly across all instances and avoid performance
 bottlenecks and rate-limiting.
 
 Farside also integrates smoothly with basic redirector extensions in most
-browsers. For an simple example setup, 
+browsers. For an simple example setup,
 [refer to the wiki](https://github.com/benbusby/farside/wiki/Browser-Extension).
 
 ## Demo
@@ -126,8 +126,6 @@ Farside's routing is very minimal, with only the following routes:
 
 - `/`
   - The app home page, displaying all live instances for every service
-- `/ping`
-  - A passthrough "ping" to redis to ensure both app and redis are working
 - `/:service/*glob`
   - The main endpoint for redirecting a user to a working instance of a
     particular service with the specified path
@@ -147,8 +145,8 @@ Farside's routing is very minimal, with only the following routes:
   - *Note: Uses Javascript to preserve the page in history*
 
 When a service is requested with the `/:service/...` endpoint, Farside requests
-the list of working instances from Redis and returns a random one from the list
-and adds that instance as a new entry in Redis to remove from subsequent
+the list of working instances from the db and returns a random one from the list
+and adds that instance as a new entry in the db to remove from subsequent
 requests for that service. For example:
 
 A user navigates to `/nitter` and is redirected to `nitter.net`. The next user
@@ -178,12 +176,10 @@ that their mission to centralize the entire web behind their service ultimately
 goes against what Farside is trying to solve. Use at your own discretion.
 
 ## Development
-- Install [redis](https://redis.io)
 - Install [elixir](https://elixir-lang.org/install.html)
 - (on Debian systems) Install [erlang-dev](https://packages.debian.org/sid/erlang-dev)
-- Start redis: `redis-server`
 - Install dependencies: `mix deps.get`
-- Initialize redis contents: `mix run -e Farside.Instances.sync`
+- Initialize db contents: `mix run -e Farside.Instances.sync`
 - Run Farside: `mix run --no-halt`
   - Uses localhost:4001
 
@@ -203,8 +199,8 @@ goes against what Farside is trying to solve. Use at your own discretion.
         <td>The port to run Farside on (default: `4001`)</td>
     </tr>
     <tr>
-        <td>FARSIDE_REDIS_PORT</td>
-        <td>The Redis server port to use (default: `6379`, same as the default for Redis)</td>
+        <td>FARSIDE_DATA_DIR</td>
+        <td>The path to the directory to use for storing instance data (default: `/tmp`)</td>
     </tr>
     <tr>
         <td>FARSIDE_SERVICES_JSON</td>
diff --git a/config/runtime.exs b/config/runtime.exs
index e4491ff..e00feb8 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -2,5 +2,5 @@ import Config
 
 config :farside,
   port: System.get_env("FARSIDE_PORT", "4001"),
-  redis_conn: "redis://localhost:#{System.get_env("FARSIDE_REDIS_PORT", "6379")}",
-  services_json: System.get_env("FARSIDE_SERVICES_JSON", "services.json")
+  services_json: System.get_env("FARSIDE_SERVICES_JSON", "services.json"),
+  data_dir: System.get_env("FARSIDE_DATA_DIR", File.cwd!)
diff --git a/lib/farside.ex b/lib/farside.ex
index 8159e82..e680cdc 100644
--- a/lib/farside.ex
+++ b/lib/farside.ex
@@ -35,15 +35,14 @@ defmodule Farside do
   }
 
   def get_services_map do
-    {:ok, service_list} = Redix.command(:redix, ["KEYS", "#{@service_prefix}*"])
+    service_list = CubDB.select(CubDB)
+                   |> Stream.map(fn {key, _value} -> key end)
+                   |> Stream.filter(fn key -> String.starts_with?(key, @service_prefix) end)
+                   |> Enum.to_list
 
     # Match service name to list of available instances
     Enum.reduce(service_list, %{}, fn service, acc ->
-      {:ok, instance_list} =
-        Redix.command(
-          :redix,
-          ["LRANGE", service, "0", "-1"]
-        )
+      instance_list = CubDB.get(CubDB, service)
 
       Map.put(
         acc,
@@ -58,7 +57,7 @@ defmodule Farside do
   end
 
   def get_service(service) do
-    # Check if service has an entry in Redis, otherwise try to
+    # Check if service has an entry in the db, otherwise try to
     # match against available parent services
     service_name = cond do
       !check_service(service) ->
@@ -76,42 +75,18 @@ defmodule Farside do
 
   def check_service(service) do
     # Checks to see if a specific service has instances available
-    # in redis
-    {:ok, instances} =
-      Redix.command(
-        :redix,
-        [
-          "LRANGE",
-          "#{@service_prefix}#{service}",
-          "0",
-          "-1"
-        ]
-      )
+    instances = CubDB.get(CubDB, "#{@service_prefix}#{service}")
 
-    Enum.count(instances) > 0
+    instances != nil && Enum.count(instances) > 0
   end
 
   def last_instance(service) do
     # Fetches the last selected instance for a particular service
-    {:ok, previous} =
-      Redix.command(
-        :redix,
-        ["GET", "#{service}#{@previous_suffix}"]
-      )
-    previous
+    CubDB.get(CubDB, "#{service}#{@previous_suffix}")
   end
 
   def pick_instance(service) do
-    {:ok, instances} =
-      Redix.command(
-        :redix,
-        [
-          "LRANGE",
-          "#{@service_prefix}#{service}",
-          "0",
-          "-1"
-        ]
-      )
+    instances = CubDB.get(CubDB, "#{@service_prefix}#{service}")
 
     # Either pick a random available instance,
     # or fall back to the default one
@@ -127,21 +102,12 @@ defmodule Farside do
             Enum.filter(instances, &(&1 != last_instance(service)))
             |> Enum.random()
 
-          Redix.command(
-            :redix,
-            ["SET", "#{service}#{@previous_suffix}", instance]
-          )
+          CubDB.put(CubDB, "#{service}#{@previous_suffix}", instance)
 
           instance
         end
       else
-        {:ok, result} =
-          Redix.command(
-            :redix,
-            ["GET", "#{service}#{@fallback_suffix}"]
-          )
-
-        result
+        CubDB.get(CubDB, "#{service}#{@fallback_suffix}")
       end
     instance
   end
@@ -165,12 +131,6 @@ defmodule Farside do
   end
 
   def get_last_updated do
-    {:ok, last_updated} =
-      Redix.command(
-        :redix,
-        ["GET", "last_updated"]
-      )
-
-    last_updated
+    CubDB.get(CubDB, "last_updated")
   end
 end
diff --git a/lib/farside/application.ex b/lib/farside/application.ex
index 17750e4..cea7871 100644
--- a/lib/farside/application.ex
+++ b/lib/farside/application.ex
@@ -1,16 +1,13 @@
 defmodule Farside.Application do
-  #@farside_port Application.fetch_env!(:farside, :port)
-  #@redis_conn Application.fetch_env!(:farside, :redis_conn)
   @moduledoc false
 
   use Application
 
   @impl true
   def start(_type, _args) do
-    redis_conn = Application.fetch_env!(:farside, :redis_conn)
     farside_port = Application.fetch_env!(:farside, :port)
+    data_dir = Application.fetch_env!(:farside, :data_dir)
     IO.puts "Running on http://localhost:#{farside_port}"
-    IO.puts "Redis conn: #{redis_conn}"
 
     children = [
       Plug.Cowboy.child_spec(
@@ -21,7 +18,7 @@ defmodule Farside.Application do
         ]
       ),
       {PlugAttack.Storage.Ets, name: Farside.Throttle.Storage, clean_period: 60_000},
-      {Redix, {redis_conn, [name: :redix]}},
+      {CubDB, [data_dir: data_dir, name: CubDB]},
       Farside.Scheduler,
       Farside.Server
     ]
diff --git a/lib/farside/instances.ex b/lib/farside/instances.ex
index f37f306..c358d09 100644
--- a/lib/farside/instances.ex
+++ b/lib/farside/instances.ex
@@ -12,11 +12,7 @@ defmodule Farside.Instances do
     update()
 
     # Add UTC time of last update
-    Redix.command(:redix, [
-      "SET",
-      "last_updated",
-      Calendar.strftime(DateTime.utc_now(), "%c")
-    ])
+    CubDB.put(CubDB, "last_updated", Calendar.strftime(DateTime.utc_now(), "%c"))
   end
 
   def request(url) do
@@ -69,41 +65,24 @@ defmodule Farside.Instances do
           request(request_url) == :good
         end)
 
-      add_to_redis(service, result)
+      add_to_db(service, result)
       log_results(service.type, result)
     end
   end
 
-  def add_to_redis(service, instances) do
+  def add_to_db(service, instances) do
     # Remove previous list of instances
-    Redix.command(:redix, [
-      "DEL",
-      "#{@service_prefix}#{service.type}"
-    ])
+    CubDB.delete(CubDB, "#{@service_prefix}#{service.type}")
 
     # Update with new list of available instances
-    Redix.command(
-      :redix,
-      [
-        "LPUSH",
-        "#{@service_prefix}#{service.type}"
-      ] ++ instances
-    )
+    CubDB.put(CubDB, "#{@service_prefix}#{service.type}", instances)
 
     # Set fallback to one of the available instances,
     # or the default instance if all are "down"
     if Enum.count(instances) > 0 do
-      Redix.command(:redix, [
-        "SET",
-        "#{service.type}#{@fallback_suffix}",
-        Enum.random(instances)
-      ])
+      CubDB.put(CubDB, "#{service.type}#{@fallback_suffix}", Enum.random(instances))
     else
-      Redix.command(:redix, [
-        "SET",
-        "#{service.type}#{@fallback_suffix}",
-        service.fallback
-      ])
+      CubDB.put(CubDB, "#{service.type}#{@fallback_suffix}", service.fallback)
     end
   end
 
diff --git a/lib/farside/router.ex b/lib/farside/router.ex
index ed667e4..a11e07a 100644
--- a/lib/farside/router.ex
+++ b/lib/farside/router.ex
@@ -29,12 +29,6 @@ defmodule Farside.Router do
     send_resp(conn, 200, resp)
   end
 
-  get "/ping" do
-    # Useful for app healthcheck
-    {:ok, resp} = Redix.command(:redix, ["PING"])
-    send_resp(conn, 200, resp)
-  end
-
   get "/_/:service/*glob" do
     r_path = String.slice(conn.request_path, 2..-1)
 
diff --git a/mix.exs b/mix.exs
index 80cc121..13ddd3b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -27,7 +27,7 @@ defmodule Farside.MixProject do
       {:plug_attack, "~> 0.4.2"},
       {:plug_cowboy, "~> 2.0"},
       {:quantum, "~> 3.0"},
-      {:redix, "~> 1.1"}
+      {:cubdb, "~> 2.0.1"}
     ]
   end
 end
diff --git a/mix.lock b/mix.lock
index 5f327f5..a8e70df 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,29 +1,27 @@
 %{
-  "certifi": {:hex, :certifi, "2.8.0", "d4fb0a6bb20b7c9c3643e22507e42f356ac090a1dcea9ab99e27e0376d695eba", [:rebar3], [], "hexpm", "6ac7efc1c6f8600b08d625292d4bbf584e14847ce1b6b5c44d983d273e1097ea"},
+  "certifi": {:hex, :certifi, "2.9.0", "6f2a475689dd47f19fb74334859d460a2dc4e3252a3324bd2111b8f0429e7e21", [:rebar3], [], "hexpm", "266da46bdb06d6c6d35fde799bcb28d36d985d424ad7c08b5bb48f5b5cdd4641"},
   "cowboy": {:hex, :cowboy, "2.9.0", "865dd8b6607e14cf03282e10e934023a1bd8be6f6bacf921a7e2a96d800cd452", [:make, :rebar3], [{:cowlib, "2.11.0", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "1.8.0", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "2c729f934b4e1aa149aff882f57c6372c15399a20d54f65c8d67bef583021bde"},
   "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.4.0", "f239f68b588efa7707abce16a84d0d2acf3a0f50571f8bb7f56a15865aae820c", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "7d98bac1ee4565d31b62d59f8823dfd8356a169e7fcbb83831b8a5397404c9de"},
   "cowlib": {:hex, :cowlib, "2.11.0", "0b9ff9c346629256c42ebe1eeb769a83c6cb771a6ee5960bd110ab0b9b872063", [:make, :rebar3], [], "hexpm", "2b3e9da0b21c4565751a6d4901c20d1b4cc25cbb7fd50d91d2ab6dd287bc86a9"},
-  "crontab": {:hex, :crontab, "1.1.10", "dc9bb1f4299138d47bce38341f5dcbee0aa6c205e864fba7bc847f3b5cb48241", [:mix], [{:ecto, "~> 1.0 or ~> 2.0 or ~> 3.0", [hex: :ecto, repo: "hexpm", optional: true]}], "hexpm", "1347d889d1a0eda997990876b4894359e34bfbbd688acbb0ba28a2795ca40685"},
+  "crontab": {:hex, :crontab, "1.1.11", "4028ced51b813a5061f85b689d4391ef0c27550c8ab09aaf139e4295c3d93ea4", [:mix], [{:ecto, "~> 1.0 or ~> 2.0 or ~> 3.0", [hex: :ecto, repo: "hexpm", optional: true]}], "hexpm", "ecb045f9ac14a3e2990e54368f70cdb6e2f2abafc5bc329d6c31f0c74b653787"},
+  "cubdb": {:hex, :cubdb, "2.0.1", "24cab8fb4128df704c52ed641f5ed70af352f7a3a80cebbb44c3bbadc3fd5f45", [:mix], [], "hexpm", "57cf25aebfc34f4580d9075da06882b4fe3e0739f5353d4dcc213e9cc1b10cdf"},
   "gen_stage": {:hex, :gen_stage, "1.1.2", "b1656cd4ba431ed02c5656fe10cb5423820847113a07218da68eae5d6a260c23", [:mix], [], "hexpm", "9e39af23140f704e2b07a3e29d8f05fd21c2aaf4088ff43cb82be4b9e3148d02"},
-  "hackney": {:hex, :hackney, "1.18.0", "c4443d960bb9fba6d01161d01cd81173089686717d9490e5d3606644c48d121f", [:rebar3], [{:certifi, "~>2.8.0", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~>6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~>1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~>1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "9afcda620704d720db8c6a3123e9848d09c87586dc1c10479c42627b905b5c5e"},
-  "httpoison": {:hex, :httpoison, "1.8.0", "6b85dea15820b7804ef607ff78406ab449dd78bed923a49c7160e1886e987a3d", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "28089eaa98cf90c66265b6b5ad87c59a3729bea2e74e9d08f9b51eb9729b3c3a"},
+  "hackney": {:hex, :hackney, "1.18.1", "f48bf88f521f2a229fc7bae88cf4f85adc9cd9bcf23b5dc8eb6a1788c662c4f6", [:rebar3], [{:certifi, "~>2.9.0", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~>6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~>1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~>1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "a4ecdaff44297e9b5894ae499e9a070ea1888c84afdd1fd9b7b2bc384950128e"},
+  "httpoison": {:hex, :httpoison, "1.8.2", "9eb9c63ae289296a544842ef816a85d881d4a31f518a0fec089aaa744beae290", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "2bb350d26972e30c96e2ca74a1aaf8293d61d0742ff17f01e0279fef11599921"},
   "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
-  "jason": {:hex, :jason, "1.2.2", "ba43e3f2709fd1aa1dce90aaabfd039d000469c05c56f0b8e31978e03fa39052", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "18a228f5f0058ee183f29f9eae0805c6e59d61c3b006760668d8d18ff0d12179"},
+  "jason": {:hex, :jason, "1.4.0", "e855647bc964a44e2f67df589ccf49105ae039d4179db7f6271dfd3843dc27e6", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "79a3791085b2a0f743ca04cec0f7be26443738779d09302e01318f97bdb82121"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
-  "mime": {:hex, :mime, "2.0.2", "0b9e1a4c840eafb68d820b0e2158ef5c49385d17fb36855ac6e7e087d4b1dcc5", [:mix], [], "hexpm", "e6a3f76b4c277739e36c2e21a2c640778ba4c3846189d5ab19f97f126df5f9b7"},
+  "mime": {:hex, :mime, "2.0.3", "3676436d3d1f7b81b5a2d2bd8405f412c677558c81b1c92be58c00562bb59095", [:mix], [], "hexpm", "27a30bf0db44d25eecba73755acf4068cbfe26a4372f9eb3e4ea3a45956bff6b"},
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm", "f278585650aa581986264638ebf698f8bb19df297f66ad91b18910dfc6e19323"},
-  "mustache": {:hex, :mustache, "0.3.1", "4c6ee79b13aae954035fe31b83c94480ddc7b536d09c44d4c65e61a9ead38d6b", [:mix], [], "hexpm", "8dc92b9b92a0d7449628f4fc981f8018a16a5b8c9907249e59db461482dac143"},
   "parse_trans": {:hex, :parse_trans, "3.3.1", "16328ab840cc09919bd10dab29e431da3af9e9e7e7e6f0089dd5a2d2820011d8", [:rebar3], [], "hexpm", "07cd9577885f56362d414e8c4c4e6bdf10d43a8767abb92d24cbe8b24c54888b"},
-  "phoenix_view": {:hex, :phoenix_view, "1.0.0", "fea71ecaaed71178b26dd65c401607de5ec22e2e9ef141389c721b3f3d4d8011", [:mix], [{:phoenix_html, "~> 2.14.2 or ~> 3.0", [hex: :phoenix_html, repo: "hexpm", optional: true]}], "hexpm", "82be3e2516f5633220246e2e58181282c71640dab7afc04f70ad94253025db0c"},
-  "plug": {:hex, :plug, "1.12.1", "645678c800601d8d9f27ad1aebba1fdb9ce5b2623ddb961a074da0b96c35187d", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.1.1 or ~> 1.2", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "d57e799a777bc20494b784966dc5fbda91eb4a09f571f76545b72a634ce0d30b"},
+  "plug": {:hex, :plug, "1.14.0", "ba4f558468f69cbd9f6b356d25443d0b796fbdc887e03fa89001384a9cac638f", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.1.1 or ~> 1.2", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "bf020432c7d4feb7b3af16a0c2701455cbbbb95e5b6866132cb09eb0c29adc14"},
   "plug_attack": {:hex, :plug_attack, "0.4.3", "88e6c464d68b1491aa083a0347d59d58ba71a7e591a7f8e1b675e8c7792a0ba8", [:mix], [{:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "9ed6fb8a6f613a36040f2875130a21187126c5625092f24bc851f7f12a8cbdc1"},
-  "plug_cowboy": {:hex, :plug_cowboy, "2.5.2", "62894ccd601cf9597e2c23911ff12798a8a18d237e9739f58a6b04e4988899fe", [:mix], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:cowboy_telemetry, "~> 0.3", [hex: :cowboy_telemetry, repo: "hexpm", optional: false]}, {:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "ea6e87f774c8608d60c8d34022a7d073bd7680a0a013f049fc62bf35efea1044"},
-  "plug_crypto": {:hex, :plug_crypto, "1.2.2", "05654514ac717ff3a1843204b424477d9e60c143406aa94daf2274fdd280794d", [:mix], [], "hexpm", "87631c7ad914a5a445f0a3809f99b079113ae4ed4b867348dd9eec288cecb6db"},
-  "poison": {:hex, :poison, "5.0.0", "d2b54589ab4157bbb82ec2050757779bfed724463a544b6e20d79855a9e43b24", [:mix], [{:decimal, "~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "11dc6117c501b80c62a7594f941d043982a1bd05a1184280c0d9166eb4d8d3fc"},
-  "quantum": {:hex, :quantum, "3.4.0", "5a53c3c52b0d55f2323940232ba6ab4c98e7e14c73dfacbba3a1ed799b037ce5", [:mix], [{:crontab, "~> 1.1", [hex: :crontab, repo: "hexpm", optional: false]}, {:gen_stage, "~> 0.14 or ~> 1.0", [hex: :gen_stage, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "d0eb64957d3dc49c8ed730cc2203108334226496535965b8dfa3f3dbcf430f87"},
+  "plug_cowboy": {:hex, :plug_cowboy, "2.6.0", "d1cf12ff96a1ca4f52207c5271a6c351a4733f413803488d75b70ccf44aebec2", [:mix], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:cowboy_telemetry, "~> 0.3", [hex: :cowboy_telemetry, repo: "hexpm", optional: false]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "073cf20b753ce6682ed72905cd62a2d4bd9bad1bf9f7feb02a1b8e525bd94fa6"},
+  "plug_crypto": {:hex, :plug_crypto, "1.2.3", "8f77d13aeb32bfd9e654cb68f0af517b371fb34c56c9f2b58fe3df1235c1251a", [:mix], [], "hexpm", "b5672099c6ad5c202c45f5a403f21a3411247f164e4a8fab056e5cd8a290f4a2"},
+  "quantum": {:hex, :quantum, "3.5.0", "8d2c5ba68c55991e8975aca368e3ab844ba01f4b87c4185a7403280e2c99cf34", [:mix], [{:crontab, "~> 1.1", [hex: :crontab, repo: "hexpm", optional: false]}, {:gen_stage, "~> 0.14 or ~> 1.0", [hex: :gen_stage, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:telemetry_registry, "~> 0.2", [hex: :telemetry_registry, repo: "hexpm", optional: false]}], "hexpm", "cab737d1d9779f43cb1d701f46dd05ea58146fd96238d91c9e0da662c1982bb6"},
   "ranch": {:hex, :ranch, "1.8.0", "8c7a100a139fd57f17327b6413e4167ac559fbc04ca7448e9be9057311597a1d", [:make, :rebar3], [], "hexpm", "49fbcfd3682fab1f5d109351b61257676da1a2fdbe295904176d5e521a2ddfe5"},
-  "redix": {:hex, :redix, "1.1.4", "d66fc83d2d4f136c838568d1ec8b0c1a72acfcecfac88a40f86f60aaee883c93", [:mix], [{:castore, "~> 0.1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "515eff055b7de8967e835f4de22a6cfe8311bc1b8fe72f48200238fb43f6a803"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
-  "telemetry": {:hex, :telemetry, "1.0.0", "0f453a102cdf13d506b7c0ab158324c337c41f1cc7548f0bc0e130bbf0ae9452", [:rebar3], [], "hexpm", "73bc09fa59b4a0284efb4624335583c528e07ec9ae76aca96ea0673850aec57a"},
+  "telemetry": {:hex, :telemetry, "1.1.0", "a589817034a27eab11144ad24d5c0f9fab1f58173274b1e9bae7074af9cbee51", [:rebar3], [], "hexpm", "b727b2a1f75614774cff2d7565b64d0dfa5bd52ba517f16543e6fc7efcc0df48"},
+  "telemetry_registry": {:hex, :telemetry_registry, "0.3.0", "6768f151ea53fc0fbca70dbff5b20a8d663ee4e0c0b2ae589590e08658e76f1e", [:mix, :rebar3], [{:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "492e2adbc609f3e79ece7f29fec363a97a2c484ac78a83098535d6564781e917"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},
 }
diff --git a/test/farside_test.exs b/test/farside_test.exs
index d47396e..8114e7c 100644
--- a/test/farside_test.exs
+++ b/test/farside_test.exs
@@ -40,13 +40,6 @@ defmodule FarsideTest do
     assert conn.status == 200
   end
 
-  test "/ping" do
-    conn = test_conn("/ping")
-    assert conn.state == :sent
-    assert conn.status == 200
-    assert conn.resp_body == "PONG"
-  end
-
   test "/:service" do
     services_json = Application.fetch_env!(:farside, :services_json)
     {:ok, file} = File.read(services_json)