> ## Documentation Index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# PSUBSCRIBE

> Subscribe to a channel by patterns/wildcards

## Arguments

<ParamField body="patterns" type="string | string[]" required>
  The patterns matching channels to publish to.
</ParamField>

## Response

<ResponseField type="Subscriber" required>
  A subscriber instance which can subscribe to channels.
</ResponseField>

<RequestExample>
  ```ts Example theme={"system"}
  const subscription = redis.psubscribe(["user:*"]);

  const messages = [];
  subscription.on("pmessage", (data) => {
    messages.push(data.message);
  });

  await redis.publish("user:123", "user:123 message"); // receives
  await redis.publish("user:456", "user:456 message"); // receives
  await redis.publish("other:789", "other:789 message"); // doesn't receive

  console.log(messages[0]) // user:123 message
  console.log(messages[1]) // user:456 message
  console.log(messages[2]) // undefined
  ```
</RequestExample>