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Merge branch '6.4.x' into 6.5.x

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Josh Cummings 2025-05-21 14:44:03 -06:00
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docs/modules/ROOT/pages/servlet/authentication/session-management.adoc
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@ -589,6 +589,13 @@ public class MaximumSessionsPreventLoginTests {
If you are using a customized authentication filter for form-based login, then you have to configure concurrent session control support explicitly.
You can try it using the {gh-samples-url}/servlet/spring-boot/java/session-management/maximum-sessions-prevent-login[Maximum Sessions Prevent Login sample].
[NOTE]
=====
If you are using a custom implementation of `UserDetails`, ensure you override the **equals()** and **hashCode()** methods.
The default `SessionRegistry` implementation in Spring Security relies on an in-memory Map that uses these methods to correctly identify and manage user sessions.
Failing to override them may lead to issues where session tracking and user comparison behave unexpectedly.
=====
== Detecting Timeouts
Sessions expire on their own, and there is nothing that needs to be done to ensure that a security context gets removed.