# Examples By default, all examples in this directory require a postgres server, which you can run using `docker-compose.dev.yml` in the `examples/web` directory. ## Simple This example initializes persistence, gets a connection and runs the query. ```sh cargo run --example simple --features r2d2_postgres ``` ## Transaction This is extended simple example where we also upgrade existing connection to transaction and run query. Then we close transaction and use connection. ```sh cargo run --example transaction --features "nightly r2d2_postgres" ```