Redis

Redis powers BullMQ queues, caching, rate limiting and WebSocket pub/sub.

Setup

sudo apt install redis-server
sudo systemctl enable --now redis-server
redis-cli ping   # expect: PONG

REDIS_URL=redis://127.0.0.1:6379

Feature	How Redis is used
BullMQ queues	Job scheduling, retries, rate limiting
Session cache	Token and user data cache
Rate limiting	Per-IP request throttling
WebSocket pub/sub	Real-time console and telemetry

Enable AOF for durability:

# /etc/redis/redis.conf
appendonly yes
appendfsync everysec

redis-cli ping
# PONG
 
redis-cli info keyspace