feat: Installing ETS. #1

README.md

@@ -1096,7 +1096,38 @@ while just being authenticated.
 We want them to be logged in 
 *and also have paid to access it*.
 
-//TODO
+We are currently not tracking our customers
+who have paid and should be granted access.
+We are going to be needing to create
+a way to save `User`s object 
+with the referring `stripe_id` 
+and a boolean field referring to the payment status.
+
+We could use a PostgresSQL engine for this,
+but for this use case it's a bit overkill.
+Instead, to simplify deployment,
+we will be using 
+[`Erland Term Storage (ETS)`](https://elixirschool.com/en/lessons/storage/ets).
+This is a in-memory storage engine built into OTP 
+and can be employed to store large amounts of data 
+*with constant time data access*.
+Do note that since this engine is in-memory,
+**all data is lost when the process ends/server is shutdown**.
+
+There is an Elixir wrapper that makes it easy to use `ETS`.
+[`ets`](https://github.com/TheFirstAvenger/ets).
+
+Let's install it.
+
+Add it to the `deps` section inside `mix.exs`.
+
+```elixir
+def deps do
+  [
+    {:ets, "~> 0.9.0"}
+  ]
+end
+```
 
 
 

mix.exs

@@ -56,7 +56,11 @@ defmodule App.MixProject do
       {:auth_plug, "~> 1.5.1"},
 
       # Stripe integration
-      {:stripity_stripe, "~> 2.17"}
+      {:stripity_stripe, "~> 2.17"},
+
+      # Storage
+      {:ets, "~> 0.9.0"}
+
     ]
   end
 

mix.lock

@@ -12,6 +12,7 @@
   "ecto_sql": {:hex, :ecto_sql, "3.9.2", "34227501abe92dba10d9c3495ab6770e75e79b836d114c41108a4bf2ce200ad5", [:mix], [{:db_connection, "~> 2.4.1 or ~> 2.5", [hex: :db_connection, repo: "hexpm", optional: false]}, {:ecto, "~> 3.9.2", [hex: :ecto, repo: "hexpm", optional: false]}, {:myxql, "~> 0.6.0", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.16.0 or ~> 1.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:tds, "~> 2.1.1 or ~> 2.2", [hex: :tds, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "1eb5eeb4358fdbcd42eac11c1fbd87e3affd7904e639d77903c1358b2abd3f70"},
   "envar": {:hex, :envar, "1.1.0", "105bcac5a03800a1eb21e2c7e229edc687359b0cc184150ec1380db5928c115c", [:mix], [], "hexpm", "97028ab4a040a5c19e613fdf46a41cf51c6e848d99077e525b338e21d2993320"},
   "esbuild": {:hex, :esbuild, "0.6.0", "9ba6ead054abd43cb3d7b14946a0cdd1493698ccd8e054e0e5d6286d7f0f509c", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}], "hexpm", "30f9a05d4a5bab0d3e37398f312f80864e1ee1a081ca09149d06d474318fd040"},
+  "ets": {:hex, :ets, "0.9.0", "79c6a6c205436780486f72d84230c6cba2f8a9920456750ddd1e47389107d5fd", [:mix], [], "hexpm", "2861fdfb04bcaeff370f1a5904eec864f0a56dcfebe5921ea9aadf2a481c822b"},
   "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
   "finch": {:hex, :finch, "0.14.0", "619bfdee18fc135190bf590356c4bf5d5f71f916adb12aec94caa3fa9267a4bc", [:mix], [{:castore, "~> 0.1", [hex: :castore, repo: "hexpm", optional: false]}, {:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.3", [hex: :mint, repo: "hexpm", optional: false]}, {:nimble_options, "~> 0.4", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_pool, "~> 0.2.6", [hex: :nimble_pool, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "5459acaf18c4fdb47a8c22fb3baff5d8173106217c8e56c5ba0b93e66501a8dd"},
   "floki": {:hex, :floki, "0.34.0", "002d0cc194b48794d74711731db004fafeb328fe676976f160685262d43706a8", [:mix], [], "hexpm", "9c3a9f43f40dde00332a589bd9d389b90c1f518aef500364d00636acc5ebc99c"},