Explain advanced session management strategies in distributed PHP systems.

Distributed session management externalizes user session state to shared systems like Redis or token-based architectures to support scalable stateless PHP applications.

Traditional PHP sessions rely on local filesystem storage, which fails in distributed environments.

Challenges in distributed systems:

Session management strategies:

Users pinned to same server.

Problems:

Redis/Memcached shared sessions.

Client stores session claims.

Pros:

Cons:

JWT + server-side validation layer.…