mirror of
https://github.com/taigrr/nats.docs
synced 2025-01-18 04:03:23 -08:00
21 lines
1.0 KiB
Markdown
21 lines
1.0 KiB
Markdown
# Publish-Subscribe and Fan-Out
|
|
|
|
NATS implements a publish-subscribe message distribution model for one-to-many communication. A publisher sends a message on a subject and any active subscriber listening on that subject receives the message. Subscribers can also register interest in wildcard subjects that work a bit like a regular expression (but only a bit). This one-to-many pattern is sometimes called fan-out.
|
|
|
|
<div class="graphviz"><code data-viz="dot">
|
|
digraph nats_pub_sub {
|
|
rankdir=LR
|
|
publisher [shape=box, style="rounded", label="Publisher"];
|
|
subject [shape=circle, label="Subject"];
|
|
sub1 [shape=box, style="rounded", label="Subscriber"];
|
|
sub2 [shape=box, style="rounded", label="Subscriber"];
|
|
sub3 [shape=box, style="rounded", label="Subscriber"];
|
|
|
|
publisher -> subject [label="msg1"];
|
|
subject -> sub1 [label="msg1"];
|
|
subject -> sub2 [label="msg1"];
|
|
subject -> sub3 [label="msg1"];
|
|
}
|
|
</code></div>
|
|
|
|
Try NATS publish subscribe on your own, using a live server by walking through the [pub-sub tutorial](../tutorials/pubsub.md). |