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Add quick Registry example to GenServer docs #14368

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Merged
merged 2 commits into from
Apr 5, 2025
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Add quick Registry example to GenServer docs #14368

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fa3e9e8
Add quick Registry example to GenServer docs
nathanl Mar 25, 2025
f3392f5
Update lib/elixir/lib/gen_server.ex
josevalim Apr 5, 2025
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8 changes: 8 additions & 0 deletions lib/elixir/lib/gen_server.ex
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Expand Up @@ -271,6 +271,14 @@ defmodule GenServer do
generated atoms won't be garbage-collected. For such cases, you can
set up your own local registry by using the `Registry` module.

For example:

{:ok, _} = Registry.start_link(keys: :unique, name: :stacks)
name = {:via, Registry, {:stacks, "stack 1"}}
{:ok, _pid} = GenServer.start_link(Stack, "hello", name: name)
GenServer.whereis(name)
#=> #PID<0.150.0>

## Receiving "regular" messages

The goal of a `GenServer` is to abstract the "receive" loop for developers,
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