Explain advanced Redis architecture and optimization strategies for PHP systems.

Advanced Redis architecture involves clustering, persistence tuning, memory optimization, distributed coordination, and high-throughput caching strategies.

Redis is far more than a cache. In modern PHP systems, Redis often becomes a central distributed systems component.

Redis use cases:

Key architecture concepts:

Redis uses an event loop with non-blocking I/O. This allows extremely high throughput despite single-threaded command execution.

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