How do you implement CQRS with MongoDB as write store and Redis as read store?

CQRS implementation: Write side: 1) OrderService writes to MongoDB (normalized, ACID-like). 2) After write: publish OrderCreated event via Spring ApplicationEventPublisher or Kafka. Read side: 3) EventHandler listens for OrderCreated. 4) Updates Redis structures: ZADD orders:user:{userId} {timestamp} {orderId} (sorted by time). 5) Updates MongoDB order_summaries collection (denormalized for displa