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The Zend OPcache extension improves PHP performance by storing precompiled script bytecode in shared memory, eliminating the need for PHP to load and parse scripts on each request. When PHP processes a script, it typically follows these steps: Incoming Request → Zend Engine reads .php file → Lexical analysis and parsing → Generation of Opcode ( ...

Understanding Caching Concepts Buffer vs. Cache buffer: Primarily used for write operations, acting as a write buffer. cache: Primarily used for read operations, serving as a read cache. Both address speed inconsistencies and involve I/O operations. Key Cache Considerations 1. Storage location (multi-level cache): Client-side (browser cach ...