java.lang.Object
- org.springframework.web.server.session.InMemoryWebSessionStore

All Implemented Interfaces:
WebSessionStore
```
public class InMemoryWebSessionStore
extends Object
implements WebSessionStore
```
Simple Map-based storage for WebSession instances.
Since:
5.0
Author:
Rossen Stoyanchev, Rob Winch

Constructor Summary
Constructors
Constructor Description
InMemoryWebSessionStore()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`reactor.core.publisher.Mono<WebSession>`	`createWebSession()`	Create a new WebSession.
`Clock`	`getClock()`	Return the configured clock for session lastAccessTime calculations.
`int`	`getMaxSessions()`	Return the maximum number of sessions that can be stored.
`Map<String,WebSession>`	`getSessions()`	Return the map of sessions with an `unmodifiable` wrapper.
`void`	`removeExpiredSessions()`	Check for expired sessions and remove them.
`reactor.core.publisher.Mono<Void>`	`removeSession(String id)`	Remove the WebSession for the specified id.
`reactor.core.publisher.Mono<WebSession>`	`retrieveSession(String id)`	Return the WebSession for the given id.
`void`	`setClock(Clock clock)`	Configure the `Clock` to use to set lastAccessTime on every created session and to calculate if it is expired.
`void`	`setMaxSessions(int maxSessions)`	Set the maximum number of sessions that can be stored.
`reactor.core.publisher.Mono<WebSession>`	`updateLastAccessTime(WebSession session)`	Update the last accessed timestamp to "now".

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - InMemoryWebSessionStore
```
public InMemoryWebSessionStore()
```
- Method Detail
  - setMaxSessions
```
public void setMaxSessions(int maxSessions)
```
    Set the maximum number of sessions that can be stored. Once the limit is reached, any attempt to store an additional session will result in an IllegalStateException.
    By default set to 10000.
    Parameters:
    maxSessions - the maximum number of sessions
    Since:
    5.0.8
  - getMaxSessions
```
public int getMaxSessions()
```
    Return the maximum number of sessions that can be stored.
    Since:
    5.0.8
  - setClock
```
public void setClock(Clock clock)
```
    Configure the Clock to use to set lastAccessTime on every created session and to calculate if it is expired.
    This may be useful to align to different timezone or to set the clock back in a test, e.g. Clock.offset(clock, Duration.ofMinutes(-31)) in order to simulate session expiration.
    By default this is Clock.system(ZoneId.of("GMT")).
    Parameters:
    clock - the clock to use
  - getClock
```
public Clock getClock()
```
    Return the configured clock for session lastAccessTime calculations.
  - getSessions
```
public Map<String,WebSession> getSessions()
```
    Return the map of sessions with an unmodifiable wrapper. This could be used for management purposes, to list active sessions, invalidate expired ones, etc.
    Since:
    5.0.8
  - createWebSession
```
public reactor.core.publisher.Mono<WebSession> createWebSession()
```
    Description copied from interface: WebSessionStore
    Create a new WebSession.
    Note that this does nothing more than create a new instance. The session can later be started explicitly via WebSession.start() or implicitly by adding attributes -- and then persisted via WebSession.save().
    Specified by:
    createWebSession in interface WebSessionStore
    Returns:
    the created session instance
  - retrieveSession
```
public reactor.core.publisher.Mono<WebSession> retrieveSession(String id)
```
    Description copied from interface: WebSessionStore
    Return the WebSession for the given id.
    Note: This method should perform an expiration check, and if it has expired remove the session and return empty. This method should also update the lastAccessTime of retrieved sessions.
    Specified by:
    retrieveSession in interface WebSessionStore
    Parameters:
    id - the session to load
    Returns:
    the session, or an empty Mono .
  - removeSession
```
public reactor.core.publisher.Mono<Void> removeSession(String id)
```
    Description copied from interface: WebSessionStore
    Remove the WebSession for the specified id.
    Specified by:
    removeSession in interface WebSessionStore
    Parameters:
    id - the id of the session to remove
    Returns:
    a completion notification (success or error)
  - updateLastAccessTime
```
public reactor.core.publisher.Mono<WebSession> updateLastAccessTime(WebSession session)
```
    Description copied from interface: WebSessionStore
    Update the last accessed timestamp to "now".
    Specified by:
    updateLastAccessTime in interface WebSessionStore
    Parameters:
    session - the session to update
    Returns:
    the session with the updated last access time
  - removeExpiredSessions
```
public void removeExpiredSessions()
```
    Check for expired sessions and remove them. Typically such checks are kicked off lazily during calls to create or retrieve, no less than 60 seconds apart. This method can be called to force a check at a specific time.
    Since:
    5.0.8

Class InMemoryWebSessionStore

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

InMemoryWebSessionStore

Method Detail

setMaxSessions

getMaxSessions

setClock

getClock

getSessions

createWebSession

retrieveSession

removeSession

updateLastAccessTime

removeExpiredSessions