# Discovery

In decentralized networks, whether federated or p2p, there is often no global search functionality.

This issue being discussed in Mastodon: https://github.com/tootsuite/mastodon/issues/9529

Hashtags are used to filter and discover content in ssb, diaspora, mastodon

### Data availability

No server has a unified global view of a decentralized network.

Data is only available along user connections or the follow graph, whether that is determined by node or by server.

Mastodon - No global search functionality