Struct RedisSessionStore 

pub struct RedisSessionStore { /* private fields */ }

Available on non-WebAssembly only.

Session store backed by a Redis server.

Sessions are stored as Redis strings keyed by rws:sess:{id} and given a Redis TTL via SET … EX. Expired sessions are removed automatically by Redis — no purge_expired sweep is needed.

Cloning is cheap — all clones share the same underlying TCP connection (one persistent connection per RedisSessionStore instance).

Connection

Specify the server address as host:port (e.g. "127.0.0.1:6379"). Pass Some("password") for Redis servers that require AUTH. Use RedisSessionStore::from_env to read connection details from RWS_REDIS_HOST, RWS_REDIS_PORT, and RWS_REDIS_PASSWORD.

Example

use rust_web_server::session::RedisSessionStore;

let store = RedisSessionStore::new("127.0.0.1:6379", None, 3600);

let mut sess = store.create().expect("create session");
sess.set("user_id", "42");
store.save(&sess).expect("save session");

let loaded = store.load(&sess.id).expect("load session").unwrap();
assert_eq!(Some("42"), loaded.get("user_id"));

Implementations

impl RedisSessionStore

pub fn new( addr: impl Into<String>, password: Option<String>, ttl_secs: u64, ) -> Self

Create a store that connects to addr (e.g. "127.0.0.1:6379"). password is passed to Redis AUTH if Some.

pub fn from_env() -> Self

Build a store from environment variables:

• RWS_REDIS_HOST (default 127.0.0.1)
• RWS_REDIS_PORT (default 6379)
• RWS_REDIS_PASSWORD (optional)
• RWS_REDIS_TTL_SECS (default 3600)

pub fn create(&self) -> Result<Session>

Create a new empty session and persist it to Redis.

pub fn create_with_id(&self, id: String) -> Result<Session>

Create a new empty session with a caller-supplied ID and persist it.

pub fn load(&self, id: &str) -> Result<Option<Session>>

Load a session by ID. Returns None if unknown or expired.

pub fn save(&self, session: &Session) -> Result<()>

Persist a session’s data back to Redis, resetting the TTL.

pub fn destroy(&self, id: &str) -> Result<()>

Delete a session immediately.

pub fn purge_expired(&self)

No-op — Redis expiry removes sessions automatically.

pub fn len(&self) -> Result<usize>

Total number of keys in the Redis database.

Uses DBSIZE, which counts all keys, not just session keys. Useful as a rough indicator; not exact for mixed-use Redis instances.

pub fn is_empty(&self) -> Result<bool>

true if DBSIZE returns 0.

Trait Implementations

impl Clone for RedisSessionStore

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.