Skip to content

Add quick Registry example to GenServer docs #14368

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Apr 5, 2025
Merged

Add quick Registry example to GenServer docs #14368

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
fa3e9e8
Add quick Registry example to GenServer docs
nathanl Mar 25, 2025
f3392f5
Update lib/elixir/lib/gen_server.ex
josevalim Apr 5, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 8 additions & 0 deletions lib/elixir/lib/gen_server.ex
View file
Open in desktop
Original file line number Diff line number Diff line change
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)
Registry.lookup(:stacks, "stack 1")
#=> [{#PID<0.150.0>, nil}]

## Receiving "regular" messages

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