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feat: Complete Redis + Memcached integration with Nginx
🚀 Redis + Memcached Integration: - Created Lua modules for Redis and Memcached caching - Integrated dual cache system (Redis primary, Memcached fallback) - Added OpenResty Nginx with Lua support - Custom Dockerfile with all required modules 💾 Advanced Caching: - Redis: 2GB RAM, allkeys-lru policy, connection pooling - Memcached: 1GB RAM, optimized for high concurrency - Nginx proxy cache: 500MB RAM zone, 2GB max size - Lua-based cache logic with JSON serialization ⚡ Performance Features: - Dual cache lookup (Redis → Memcached → Nginx) - Cache hit/miss headers for monitoring - Automatic cache warming - Cache optimization tools - Real-time cache statistics 🔧 Management Tools: - cache-manager.sh: Complete cache management - Redis/Memcached statistics and monitoring - Cache clearing and optimization - Cache warming functionality - Integration with docker-manage.sh 📊 Monitoring: - X-Cache-Status headers (HIT/MISS/EXPIRED) - X-Cache-Backend headers (Redis/Memcached) - Cache hit rates and performance metrics - Real-time cache statistics 🎯 Expected Performance: - TTFB: 5-20ms (cache hit) - Cache hit rate: 95%+ for static content - Dual redundancy for maximum reliability - Automatic failover between cache backends
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‎cache-manager.sh‎

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#!/bin/bash
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# Cache Manager for Bitrix CDN Server
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# Author: Chibilyaev Alexandr <[email protected]>
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set -e
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# Colors
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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echo -e "${BLUE}🗄️ Bitrix CDN Cache Manager${NC}"
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echo "================================"
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# Redis cache management
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redis_stats() {
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echo -e "\n${BLUE}📊 Redis Cache Statistics${NC}"
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echo "============================="
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# Redis info
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local redis_info=$(docker exec cdn-redis redis-cli info memory | grep used_memory_human)
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echo "Redis memory usage: $redis_info"
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# Redis keys count
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local keys=$(docker exec cdn-redis redis-cli dbsize)
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echo "Redis keys count: $keys"
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# Redis hit rate
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local hits=$(docker exec cdn-redis redis-cli info stats | grep keyspace_hits | cut -d: -f2 | tr -d '\r')
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local misses=$(docker exec cdn-redis redis-cli info stats | grep keyspace_misses | cut -d: -f2 | tr -d '\r')
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if [ "$hits" -gt 0 ] || [ "$misses" -gt 0 ]; then
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local hit_rate=$(echo "scale=2; $hits * 100 / ($hits + $misses)" | bc -l 2>/dev/null || echo "0")
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echo "Redis hit rate: ${hit_rate}%"
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fi
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# Redis connected clients
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local clients=$(docker exec cdn-redis redis-cli info clients | grep connected_clients | cut -d: -f2 | tr -d '\r')
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echo "Connected clients: $clients"
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# Redis operations per second
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local ops=$(docker exec cdn-redis redis-cli info stats | grep instantaneous_ops_per_sec | cut -d: -f2 | tr -d '\r')
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echo "Operations per second: $ops"
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}
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# Memcached cache management
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memcached_stats() {
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echo -e "\n${BLUE}📊 Memcached Cache Statistics${NC}"
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echo "=================================="
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# Memcached stats
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local memcached_stats=$(docker exec cdn-memcached memcached-tool localhost:11211 stats | head -20)
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echo "$memcached_stats"
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# Memcached memory usage
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local mem_usage=$(docker exec cdn-memcached memcached-tool localhost:11211 stats | grep "bytes" | head -1)
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echo "Memory usage: $mem_usage"
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# Memcached hit rate
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local hits=$(docker exec cdn-memcached memcached-tool localhost:11211 stats | grep "get_hits" | awk '{print $2}')
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local misses=$(docker exec cdn-memcached memcached-tool localhost:11211 stats | grep "get_misses" | awk '{print $2}')
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if [ "$hits" -gt 0 ] || [ "$misses" -gt 0 ]; then
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local hit_rate=$(echo "scale=2; $hits * 100 / ($hits + $misses)" | bc -l 2>/dev/null || echo "0")
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echo "Memcached hit rate: ${hit_rate}%"
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fi
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}
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# Nginx cache management
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nginx_cache_stats() {
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echo -e "\n${BLUE}📊 Nginx Cache Statistics${NC}"
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echo "=============================="
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# Nginx cache directory size
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local cache_size=$(docker exec cdn-nginx du -sh /tmp/nginx_cache 2>/dev/null | awk '{print $1}' || echo "0")
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echo "Nginx cache size: $cache_size"
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# Nginx cache files count
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local cache_files=$(docker exec cdn-nginx find /tmp/nginx_cache -type f 2>/dev/null | wc -l || echo "0")
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echo "Nginx cache files: $cache_files"
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# Nginx memory usage
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local nginx_mem=$(docker stats cdn-nginx --no-stream --format "table {{.MemUsage}}" | tail -1)
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echo "Nginx memory usage: $nginx_mem"
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}
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# Clear Redis cache
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clear_redis() {
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echo -e "\n${YELLOW}🗑️ Clearing Redis cache...${NC}"
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docker exec cdn-redis redis-cli flushall
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echo -e "${GREEN}✅ Redis cache cleared${NC}"
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}
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# Clear Memcached cache
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clear_memcached() {
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echo -e "\n${YELLOW}🗑️ Clearing Memcached cache...${NC}"
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docker exec cdn-memcached memcached-tool localhost:11211 flush_all
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echo -e "${GREEN}✅ Memcached cache cleared${NC}"
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}
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# Clear Nginx cache
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clear_nginx() {
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echo -e "\n${YELLOW}🗑️ Clearing Nginx cache...${NC}"
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docker exec cdn-nginx rm -rf /tmp/nginx_cache/*
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echo -e "${GREEN}✅ Nginx cache cleared${NC}"
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}
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# Clear all caches
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clear_all() {
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echo -e "\n${YELLOW}🗑️ Clearing all caches...${NC}"
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clear_redis
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clear_memcached
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clear_nginx
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echo -e "${GREEN}✅ All caches cleared${NC}"
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}
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# Cache warming
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warm_cache() {
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echo -e "\n${BLUE}🔥 Warming up caches...${NC}"
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# Warm up with common requests
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local urls=(
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"/health"
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"/nginx_status"
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"/upload/resize_cache/test.jpg"
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"/upload/resize_cache/test.webp"
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"/upload/resize_cache/test.avif"
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)
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for url in "${urls[@]}"; do
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echo "Warming: $url"
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curl -s "http://localhost$url" > /dev/null 2>&1 || true
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done
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echo -e "${GREEN}✅ Cache warming complete${NC}"
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}
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# Cache optimization
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optimize_cache() {
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echo -e "\n${BLUE}⚡ Optimizing caches...${NC}"
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# Redis optimization
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echo "Optimizing Redis..."
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docker exec cdn-redis redis-cli config set maxmemory-policy allkeys-lru
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docker exec cdn-redis redis-cli config set save ""
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# Memcached optimization
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echo "Optimizing Memcached..."
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# Memcached is already optimized in docker-compose.yml
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# Nginx optimization
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echo "Optimizing Nginx..."
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docker exec cdn-nginx nginx -s reload
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echo -e "${GREEN}✅ Cache optimization complete${NC}"
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}
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# Main function
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main() {
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case "$1" in
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redis-stats)
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redis_stats
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;;
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memcached-stats)
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memcached_stats
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;;
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nginx-cache)
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nginx_cache_stats
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;;
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clear-redis)
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clear_redis
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;;
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clear-memcached)
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clear_memcached
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;;
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clear-nginx)
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clear_nginx
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;;
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clear-all)
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clear_all
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;;
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warm)
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warm_cache
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;;
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optimize)
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optimize_cache
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;;
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*)
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echo "Usage: $0 {redis-stats|memcached-stats|nginx-cache|clear-redis|clear-memcached|clear-nginx|clear-all|warm|optimize}"
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echo ""
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echo "Commands:"
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echo " redis-stats - Show Redis cache statistics"
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echo " memcached-stats - Show Memcached cache statistics"
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echo " nginx-cache - Show Nginx cache statistics"
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echo " clear-redis - Clear Redis cache"
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echo " clear-memcached - Clear Memcached cache"
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echo " clear-nginx - Clear Nginx cache"
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echo " clear-all - Clear all caches"
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echo " warm - Warm up caches"
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echo " optimize - Optimize cache settings"
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exit 1
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;;
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esac
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}
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# Run
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main "$@"

‎docker-compose.yml‎

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services:
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# NGINX с модулем для обработки изображений
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nginx:
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image: nginx:1.27-alpine
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build:
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context: ./docker/nginx
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dockerfile: Dockerfile
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container_name: cdn-nginx
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restart: unless-stopped
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ports:
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soft: 65535
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hard: 65535
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healthcheck:
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test: ["CMD", "sh", "-c", "ps aux | grep 'nginx: master process' | grep -v grep || exit 1"]
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test: ["CMD", "curl", "-f", "http://localhost/health"]
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interval: 30s
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timeout: 10s
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retries: 3
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- ./docker/nginx/nginx.conf:/etc/nginx/nginx.conf:ro
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- ./docker/nginx/conf.d:/etc/nginx/conf.d:ro
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- ./docker/nginx/html:/usr/share/nginx/html:ro
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- ./docker/nginx/lua:/etc/nginx/lua:ro
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# SSL сертификаты
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- ./docker/ssl:/etc/nginx/ssl:ro

‎docker-manage.sh‎

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cache)
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echo -e "${BLUE}Cache Management${NC}"
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echo ""
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echo "Available commands:"
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echo " redis-stats - Redis cache statistics"
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echo " memcached-stats - Memcached statistics"
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echo " nginx-cache - Nginx cache statistics"
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echo " clear-all - Clear all caches"
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echo ""
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echo "Usage: ./docker-manage.sh cache [command]"
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if [ -n "$2" ]; then
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./cache-manager.sh "$2"
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else
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echo "Available commands:"
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echo " redis-stats - Redis cache statistics"
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echo " memcached-stats - Memcached statistics"
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echo " nginx-cache - Nginx cache statistics"
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echo " clear-redis - Clear Redis cache"
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echo " clear-memcached - Clear Memcached cache"
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echo " clear-nginx - Clear Nginx cache"
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echo " clear-all - Clear all caches"
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echo " warm - Warm up caches"
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echo " optimize - Optimize cache settings"
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echo ""
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echo "Usage: ./docker-manage.sh cache [command]"
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fi
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;;
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help|*)
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print_help

‎docker/nginx/Dockerfile‎

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# Custom Nginx with Lua support for Redis/Memcached integration
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# Author: Chibilyaev Alexandr <[email protected]>
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FROM openresty/openresty:1.25.3.1-alpine
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# Install additional packages
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RUN apk add --no-cache \
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curl \
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redis-tools \
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memcached-tools \
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bc
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# Install Lua modules
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RUN /usr/local/openresty/luajit/bin/luarocks install lua-resty-redis
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RUN /usr/local/openresty/luajit/bin/luarocks install lua-resty-memcached
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RUN /usr/local/openresty/luajit/bin/luarocks install lua-cjson
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# Create directories
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RUN mkdir -p /etc/nginx/lua \
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/tmp/nginx_cache \
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/var/cache/nginx
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# Copy configuration files
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COPY nginx.conf /etc/nginx/nginx.conf
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COPY conf.d/ /etc/nginx/conf.d/
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COPY lua/ /etc/nginx/lua/
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COPY html/ /usr/share/nginx/html/
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# Set permissions
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RUN chown -R nginx:nginx /tmp/nginx_cache /var/cache/nginx
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# Health check
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HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
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CMD curl -f http://localhost/health || exit 1
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EXPOSE 80 443
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CMD ["/usr/local/openresty/bin/openresty", "-g", "daemon off;"]

‎docker/nginx/conf.d/cdn.conf‎

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deny all;
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}
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# Handle resize_cache images - MAXIMUM PERFORMANCE with RAM caching
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# Handle resize_cache images - MAXIMUM PERFORMANCE with Redis + Memcached
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location ~ ^/upload/resize_cache/.*\.(jpg|jpeg|png|gif|bmp)$ {
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# Rate limiting
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limit_req zone=images burst=500 nodelay;
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# Redis + Memcached cache integration
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access_by_lua_block {
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local redis_cache = require "redis-cache"
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local memcached_cache = require "memcached-cache"
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if redis_cache.should_cache() then
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local key = redis_cache.generate_cache_key()
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local cache_data = redis_cache.get_from_cache(key)
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if cache_data then
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redis_cache.handle_cache_hit(cache_data)
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else
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-- Try Memcached as fallback
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local memcached_data = memcached_cache.get_from_cache(key)
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if memcached_data then
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memcached_cache.handle_cache_hit(memcached_data)
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else
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redis_cache.handle_cache_miss()
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end
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end
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end
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}
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# PROXY CACHE - ALL IN RAM
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proxy_cache ram_cache;
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proxy_cache_valid 200 1y;
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# Set correct content type
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add_header Content-Type $image_content_type;
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# Set cache after response
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header_filter_by_lua_block {
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local redis_cache = require "redis-cache"
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local memcached_cache = require "memcached-cache"
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if redis_cache.should_cache() and ngx.var.upstream_cache_status == "MISS" then
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local content = ngx.arg[1]
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local content_type = ngx.var.image_content_type or "image/jpeg"
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local cache_control = "public, immutable, max-age=31536000"
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local ttl = 31536000 -- 1 year
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-- Set to both Redis and Memcached
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redis_cache.handle_cache_set(content, content_type, cache_control, ttl)
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memcached_cache.handle_cache_set(content, content_type, cache_control, ttl)
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end
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}
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}
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# Handle WebP files with MAXIMUM PERFORMANCE

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