diff --git a/INSTALL.md b/INSTALL.md
index 3464d75..1f49cf2 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -81,11 +81,14 @@ The installer will:
 - `golang-go` - Go compiler
 - `nginx` - Web server/reverse proxy
 - `certbot` - SSL certificate management
-- `redis-server` - Caching layer
 - `sqlite3` - Database
 - `ffmpeg` - Video transcoding
+- `fail2ban` - Intrusion prevention
+- `ufw` - Uncomplicated Firewall
 - Various utilities (curl, jq, bc, htop, etc.)
 
+**Note:** Redis is **not required** - the gateway uses an efficient in-memory LRU cache.
+
 ### Directory Structure
 ```
 /opt/torrent-gateway/
diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
index 0267a14..84acd38 100644
--- a/docs/troubleshooting.md
+++ b/docs/troubleshooting.md
@@ -41,20 +41,19 @@ sqlite3 /opt/torrent-gateway/data/metadata.db "SELECT COUNT(*) FROM files;"
    sudo systemctl start torrent-gateway
    ```
 
-#### Redis Connection Issues
+#### Cache Performance Issues
 
-**Symptoms:** Gateway logs show Redis connection errors
+**Symptoms:** High memory usage, slow response times
 
 **Solutions:**
+The gateway uses an in-memory LRU cache (no Redis required):
 ```bash
-# Check Redis service
-sudo systemctl status redis-server
+# Check memory usage
+free -h
+sudo systemctl status torrent-gateway
 
-# Test Redis connection
-redis-cli ping
-
-# Restart Redis
-sudo systemctl restart redis-server
+# Restart service to clear cache
+sudo systemctl restart torrent-gateway
 ```
 
 ### Performance Issues
diff --git a/scripts/install_native.sh b/scripts/install_native.sh
index 57e9384..85b5c46 100755
--- a/scripts/install_native.sh
+++ b/scripts/install_native.sh
@@ -157,7 +157,6 @@ apt-get install -y \
     golang-go \
     git \
     sqlite3 \
-    redis-server \
     nginx \
     certbot \
     python3-certbot-nginx \
@@ -218,21 +217,8 @@ elif [ "$USE_EXISTING_MONITORING" = true ]; then
 fi
 ./scripts/setup_systemd.sh $MONITORING_FLAG
 
-# Step 4: Configure Redis
-echo "🔧 Optimizing Redis configuration..."
-cat > /etc/redis/redis.local.conf << 'EOF'
-# Torrent Gateway specific Redis config
-maxmemory 512mb
-maxmemory-policy allkeys-lru
-save 900 1
-save 300 10  
-save 60 10000
-EOF
-
-# Include local config in main Redis config
-if ! grep -q "include /etc/redis/redis.local.conf" /etc/redis/redis.conf; then
-    echo "include /etc/redis/redis.local.conf" >> /etc/redis/redis.conf
-fi
+# Step 4: Configure cache (in-memory LRU - no Redis needed)
+echo "🧠 Gateway uses in-memory LRU cache (no Redis required)"
 
 # Step 5: Setup monitoring (if requested)
 if [ "$ENABLE_MONITORING" = true ]; then
@@ -420,8 +406,7 @@ if command -v ufw &> /dev/null; then
         echo "📊 Monitoring ports opened for external monitoring server"
     fi
     
-    # Allow Redis only from localhost (security)
-    ufw allow from 127.0.0.1 to any port 6379 comment "Redis (localhost only)"
+    # Gateway uses in-memory cache (no Redis ports needed)
     
     # Block common attack vectors
     ufw deny 23/tcp comment "Block Telnet"
@@ -612,7 +597,6 @@ echo "0 4 * * 0 root /opt/torrent-gateway/scripts/cleanup.sh > /var/log/torrent-
 echo "🚀 Starting all services..."
 
 # Start dependencies first
-systemctl start redis-server
 systemctl start nginx
 
 if [ "$ENABLE_MONITORING" = true ]; then