> For the complete documentation index, see [llms.txt](https://docs.natsclub.cn/cn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.natsclub.cn/cn/yi-chan/stan/intro/channels.md).

# 频道

Channels are at the heart of the NATS Streaming Server. Channels are subjects clients send data to and consume from.

***Note: NATS Streaming server does not support wildcard for channels, that is, one cannot subscribe on\*\*\*\* ****`foo.*`****, or\*\*\*\* ****`foo.>`****, etc...***

The number of channels can be limited (and is by default) through configuration. Messages produced to a channel are stored in a message log inside this channel.