### Axum Example with Session Management

Source: https://github.com/maxcountryman/tower-sessions/blob/main/README.md

This example demonstrates how to integrate Tower Sessions with an Axum web application. It uses a MemoryStore for session data and configures session expiry. The handler increments a counter stored in the session for each request.

```rust
use std::net::SocketAddr;

use axum::{response::IntoResponse, routing::get, Router};
use serde::{Deserialize, Serialize};
use time::Duration;
use tower_sessions::{Expiry, MemoryStore, Session, SessionManagerLayer};

const COUNTER_KEY: &str = "counter";

#[derive(Default, Deserialize, Serialize)]
struct Counter(usize);

async fn handler(session: Session) -> impl IntoResponse {
    let counter: Counter = session.get(COUNTER_KEY).await.unwrap().unwrap_or_default();
    session.insert(COUNTER_KEY, counter.0 + 1).await.unwrap();
    format!("Current count: {}", counter.0)
}

#[tokio::main]
async fn main() {
    let session_store = MemoryStore::default();
    let session_layer = SessionManagerLayer::new(session_store)
        .with_secure(false)
        .with_expiry(Expiry::OnInactivity(Duration::seconds(10)));

    let app = Router::new().route("/", get(handler)).layer(session_layer);

    let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
    let listener = tokio::net::TcpListener::bind(&addr).await.unwrap();
    axum::serve(listener, app.into_make_service())
        .await
        .unwrap();
}
```

--------------------------------

### Add Tower Sessions to Cargo.toml

Source: https://github.com/maxcountryman/tower-sessions/blob/main/README.md

Add this dependency to your Cargo.toml file to include the tower-sessions crate in your project.

```toml
[dependencies]
tower-sessions = "0.14.0"
```

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