Struct MemorySessionStore 

pub struct MemorySessionStore { /* private fields */ }

Sessions held in this process’s memory.

Right for development, tests, and a single instance. Two instances behind a load balancer will not see each other’s sessions, so a user’s session appears to vanish and reappear as they are routed around — which looks like a bug in your login code and is not.

Implementations

impl MemorySessionStore

pub fn new(lifetime: Duration) -> Self

Sessions expiring after lifetime.

pub fn len(&self) -> usize

How many sessions are held, expired ones included.

pub fn is_empty(&self) -> bool

Whether no sessions are held.

Trait Implementations

impl Debug for MemorySessionStore

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MemorySessionStore

fn default() -> Self

Returns the “default value” for a type.

impl SessionStore for MemorySessionStore

fn name(&self) -> &str

A label for diagnostics — "memory", "database", "cache", "cookie".

fn read<'a>(&'a self, id: &'a str) -> BoxFuture<'a, Result<Option<SessionData>>>

The data for this id, or None if it is unknown or expired.

fn write<'a>( &'a self, id: &'a str, data: &'a SessionData, ) -> BoxFuture<'a, Result<()>>

Write the data back, refreshing its expiry.

fn destroy<'a>(&'a self, id: &'a str) -> BoxFuture<'a, Result<()>>

Remove a session.

fn gc(&self) -> BoxFuture<'_, Result<u64>>

Discard every expired session. Called periodically, not per request.

fn is_client_side(&self) -> bool

Whether the session travels in the cookie rather than being stored here.

fn encode(&self, id: &str, data: &SessionData) -> Result<String>

The cookie value carrying this session.

fn decode(&self, value: &str) -> Result<(String, Option<SessionData>)>

Recover a session id — and, for a client-side store, its data — from a cookie value.