perf(MBTAV3API.Repository): Cache schedules responses for 1 hour

lib/mbta_v3_api/repository.ex

@@ -67,8 +67,13 @@ end
 
 defmodule MBTAV3API.Repository.Impl do
   @behaviour MBTAV3API.Repository
+
+  use Nebulex.Caching.Decorators
+
   alias MBTAV3API.JsonApi
 
+  @ttl :timer.hours(1)
+
   @impl true
   def alerts(params, opts \\ []), do: all(MBTAV3API.Alert, params, opts)
 
@@ -79,6 +84,7 @@ defmodule MBTAV3API.Repository.Impl do
   def routes(params, opts \\ []), do: all(MBTAV3API.Route, params, opts)
 
   @impl true
+  @decorate cacheable(cache: MBTAV3API.RepositoryCache, on_error: :nothing, opts: [ttl: @ttl])
   def schedules(params, opts \\ []), do: all(MBTAV3API.Schedule, params, opts)
 
   @impl true

lib/mbta_v3_api/repository_cache.ex

@@ -0,0 +1,6 @@
+defmodule MBTAV3API.RepositoryCache do
+  @moduledoc """
+  Cache used to reduce the number of calls to the V3 API.
+  """
+  use Nebulex.Cache, otp_app: :mobile_app_backend, adapter: Nebulex.Adapters.Local
+end

mix.exs

@@ -55,6 +55,7 @@ defmodule MobileAppBackend.MixProject do
       {:esbuild, "~> 0.7", runtime: Mix.env() == :dev},
       {:tailwind, "~> 0.2.0", runtime: Mix.env() == :dev},
       {:logster, "~> 1.1"},
+      {:decorator, "~> 1.4"},
       {:diskusage_logger, "~> 0.2", only: :prod},
       {:ehmon, github: "mbta/ehmon", only: :prod},
       {:sobelow, "~> 0.13", only: [:dev, :test], runtime: false},

mix.lock

@@ -8,6 +8,7 @@
   "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, "2.13.0", "db8f7505d8332d98ef50a3ef34b34c1afddec7506e4ee4dd4a3a266285d282ca", [:make, :rebar3], [], "hexpm", "e1e1284dc3fc030a64b1ad0d8382ae7e99da46c3246b815318a4b848873800a4"},
   "credo": {:hex, :credo, "1.7.9", "07bb31907746ae2b5e569197c9e16c0d75c8578a22f01bee63f212047efb2647", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "f87c11c34ba579f7c5044f02b2a807e1ed2fa5fdbb24dc7eb4ad59c1904887f3"},
+  "decorator": {:hex, :decorator, "1.4.0", "a57ac32c823ea7e4e67f5af56412d12b33274661bb7640ec7fc882f8d23ac419", [:mix], [], "hexpm", "0a07cedd9083da875c7418dea95b78361197cf2bf3211d743f6f7ce39656597f"},
   "dialyxir": {:hex, :dialyxir, "1.4.4", "fb3ce8741edeaea59c9ae84d5cec75da00fa89fe401c72d6e047d11a61f65f70", [:mix], [{:erlex, ">= 0.2.7", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "cd6111e8017ccd563e65621a4d9a4a1c5cd333df30cebc7face8029cacb4eff6"},
   "diskusage_logger": {:hex, :diskusage_logger, "0.2.0", "04fc48b538fe4de43153542a71ea94f623d54707d85844123baacfceedf625c3", [:mix], [], "hexpm", "e3f2aed1b0fc4590931c089a6453a4c4eb4c945912aa97bcabcc0cff7851f34d"},
   "dns_cluster": {:hex, :dns_cluster, "0.1.3", "0bc20a2c88ed6cc494f2964075c359f8c2d00e1bf25518a6a6c7fd277c9b0c66", [:mix], [], "hexpm", "46cb7c4a1b3e52c7ad4cbe33ca5079fbde4840dedeafca2baf77996c2da1bc33"},