NebulexEcto

Ecto & Nebulex Integration

Ecto Cacheable Repo with Nebulex

A project that integrates Nebulex with Ecto out-of-box.

Installation

Add nebulex_ecto to your list dependencies in mix.exs:

def deps do
  [
    {:nebulex_ecto, "~> 0.1"}
  ]
end

Example

Suppose you have an Ecto repo:

defmodule MyApp.Repo do
  use Ecto.Repo,
    otp_app: :my_app,
    adapter: Ecto.Adapters.Postgres
end

And a Nebulex cache:

defmodule MyApp.Cache do
  use Nebulex.Cache,
    otp_app: :my_app,
    adapter: Nebulex.Adapters.Local
end

The idea is to encapsulate both in a single module by means of NebulexEcto.Repo, like so:

defmodule MyApp.CacheableRepo do
  use NebulexEcto.Repo,
    cache: MyApp.Cache,
    repo: MyApp.Repo
end

Now we can use MyApp.CacheableRepo as a regular Ecto repo, of course, there are some constraints, NebulexEcto.Repo only provides some of the Ecto.Repo functions (the basic ones – get, get_by, insert, update, delete, etc.), please check them out before.

Usage example:

First, let's define a schema:

defmodule MyApp.MySchema do
  use Ecto.Schema

  schema "my_schema" do
    field :x, :string
    field :y, :binary
    field :z, :string, default: "z"
  end
end

Now we can play with it:

schema = %MyApp.MySchema{x: "abc"}

{:ok, schema} = MyApp.CacheableRepo.insert(schema)

MyApp.CacheableRepo.get!(MyApp.MySchema, schema.id)

MyApp.CacheableRepo.get_by!(MyApp.MySchema, [id: schema.id])

changeset = Ecto.Changeset.change schema, x: "New"
{:ok, schema} = MyApp.CacheableRepo.update(changeset)

MyApp.CacheableRepo.delete(schema)

Running Tests

To run the tests:

$ mix test

Running tests with coverage:

$ mix coveralls.html

And you can check out the coverage result in cover/excoveralls.html.