Sushant Kumbhar on Instagram: "✅ Answer (Point-wise): 1. Use Pattern: → The suitable messaging pattern is the Publish–Subscribe (Pub/Sub) pattern. 2. Concept: → In this pattern, one service (Publisher) sends events, and multiple services (Subscribers) listen and react to those events. 3. How It Works: The Publisher emits an event (e.g., “OrderStatusChanged”). The Message Broker (like Kafka, RabbitMQ, or AWS SNS) distributes this event. All Subscribers that have registered for this event receive

Interview Preparation on Instagram: "🚀 1. Load Balancing Distribute traffic across multiple servers. Use NGINX / HAProxy / AWS ELB / Kubernetes Ingress — so no single instance gets overwhelmed. Both Spring Boot & Python (FastAPI, Django) scale horizontally — spin up multiple app replicas behind a load balancer. ⚙️ 2. Caching Smartly 💡 Avoid hitting your DB for every login! Use Redis / Memcached to cache tokens, sessions, or user profiles. Spring Boot → Use Spring Cache with Redis. Python → Use