### Install Dependencies

Source: https://github.com/therealreal/conn_grpc/blob/main/misc/demo/README.md

Run this command to fetch project dependencies.

```elixir
mix deps.get
```

--------------------------------

### Get Standalone Channel

Source: https://github.com/therealreal/conn_grpc/blob/main/misc/demo/README.md

Obtain a standalone gRPC channel using MyChannel.get().

```elixir
MyChannel.get()
```

--------------------------------

### Run ConnGRPC App

Source: https://github.com/therealreal/conn_grpc/blob/main/misc/demo/README.md

Start the ConnGRPC application in an interactive Elixir shell.

```elixir
iex -S mix run
```

--------------------------------

### Get a Single Channel Connection

Source: https://github.com/therealreal/conn_grpc/blob/main/guides/overview.md

Retrieve a single persistent channel connection using `get/0` from a module defined with `ConnGRPC.Channel`.

```elixir
{:ok, channel} = DemoChannel.get()
```

--------------------------------

### Get a Channel from the Pool

Source: https://github.com/therealreal/conn_grpc/blob/main/guides/overview.md

Retrieve a channel connection from a `ConnGRPC.Pool` using `get_channel/0`. Channels are distributed using round-robin.

```elixir
{:ok, channel} = DemoPool.get_channel()
```

--------------------------------

### Get Channel from Pool

Source: https://github.com/therealreal/conn_grpc/blob/main/misc/demo/README.md

Retrieve a gRPC channel from the connection pool via MyPool.get_channel().

```elixir
MyPool.get_channel()
```

--------------------------------

### View Supervision Tree

Source: https://github.com/therealreal/conn_grpc/blob/main/misc/demo/README.md

Launch the :observer tool to inspect the application's supervision tree.

```elixir
:observer.start()
```

--------------------------------

### Define a Single Channel Module

Source: https://github.com/therealreal/conn_grpc/blob/main/guides/overview.md

Define a module using `ConnGRPC.Channel` for a single persistent gRPC channel. Specify the address and options for the connection.

```elixir
defmodule DemoChannel do
  use ConnGRPC.Channel, address: "localhost:50051", opts: []
end
```

--------------------------------

### Define a Channel Pool Module

Source: https://github.com/therealreal/conn_grpc/blob/main/guides/overview.md

Define a module using `ConnGRPC.Pool` to manage a pool of persistent gRPC channels. Configure pool size and channel connection details.

```elixir
defmodule DemoPool do
  use ConnGRPC.Pool,
    pool_size: 5,
    channel: [address: "localhost:50051", opts: []]
end
```

--------------------------------

### Add ConnGRPC to Dependencies

Source: https://github.com/therealreal/conn_grpc/blob/main/guides/overview.md

Add ConnGRPC and gRPC Elixir to your project's dependencies in `mix.exs`.

```elixir
def deps do
  [
    {:conn_grpc, "~> 0.1"},

    # You also need to have gRPC Elixir installed
    {:grpc, "~> 0.5"}
  ]
end
```

--------------------------------

### Attach Telemetry Handler

Source: https://github.com/therealreal/conn_grpc/blob/main/guides/telemetry.md

Use :telemetry.attach/4 or :telemetry.attach_many/4 to register a handler function for ConnGRPC telemetry events. This is useful for monitoring connection status, durations, and pool performance.

```elixir
iex> :telemetry.attach("conn_grpc_channel_events", [:conn_grpc, :channel, :get], &IO.inspect/1, :user)
:ok
iex> :telemetry.attach("conn_grpc_pool_events", [:conn_grpc, :pool, :get_channel], &IO.inspect/1, :user)
:ok
```

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