cache-diagnostic Skill: Анализ и оптимизация кэша Magento 2

--- name: cache-diagnostic description: Specialized Magento 2 cache diagnostic skill for analyzing cache configuration, performance, hit rates, and optimization opportunities across all cache layers (Full Page Cache, Application Cache, Redis, Varnish). --- This skill provides deep cache analysis and optimization recommendations for Magento 2. ## What This Skill Does 1. **Cache Configuration Analysis** - Cache type status for all 15+ Magento cache types - Backend configuration (File, Redis, Memcached) - Full Page Cache (FPC) backend (Varnish, Built-in, Redis) - Cache prefix and tag configuration - Cache lifetime settings 2. **Redis Analysis** (if applicable) - Redis connection and version - Memory usage and fragmentation - Keyspace analysis and database usage - Eviction policy and maxmemory settings - Hit rate statistics - Slow log analysis 3. **Varnish Analysis** (if applicable) - Varnish version and configuration - Hit rate and cache effectiveness - Backend health and response times - ESI hole configuration - Cache invalidation (PURGE) functionality - VCL configuration validation 4. **Cache Performance Metrics** - Cache hit/miss ratios per cache type - Cache size and growth trends - Cache warming status - Invalidation frequency and patterns - Cache-related errors and warnings 5. **Application Cache Analysis** - Config cache efficiency - Layout cache effectiveness - Block HTML cache usage - Collections cache status - EAV cache efficiency ## Diagnostic Commands ```bash # Cache Status bin/magento cache:status bin/magento config:show --scope=default | grep cache # Redis Analysis redis-cli INFO redis-cli INFO stats redis-cli --latency redis-cli SLOWLOG GET 10 # Varnish Analysis varnishstat -1 varnishlog -q "RespStatus >= 400" -n 100 varnishadm vcl.list