How would you design a globally distributed PHP architecture serving millions of users?

Globally distributed PHP systems require multi-region infrastructure, stateless services, distributed caching, asynchronous communication, and resilience engineering.

Designing systems serving millions of users globally involves far more than scaling PHP servers. The challenge becomes distributed systems engineering.

Core architectural pillars:

PHP servers must remain stateless. State is externalized into:

Regions reduce latency and improve disaster recovery.

Example:

Technologies:

4.…