# Solana Geyser Plugin Interface This crate enables an plugin to be added into the Solana Validator runtime to take actions at the time of account updates or block and transaction processing; for example, saving the account state to an external database. The plugin must implement the `GeyserPlugin` trait. Please see the detail of the `geyser_plugin_interface.rs` for the interface definition. The plugin should produce a `cdylib` dynamic library, which must expose a `C` function `_create_plugin()` that instantiates the implementation of the interface. The https://github.com/solana-labs/solana-accountsdb-plugin-postgres repository provides an example of how to create a plugin which saves the accounts data into an external PostgreSQL databases. More information about Solana is available in the [Solana documentation](https://docs.solana.com/). Still have questions? Ask us on [Discord](https://discordapp.com/invite/pquxPsq)