<aside> 📚 📁 Category: Microservices

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Overview

Service Discovery automatically detects services in a network so they can communicate without hardcoded addresses. Essential for dynamic, scalable microservices architectures.

<aside> ℹ️ Why It Matters: Understanding Service Discovery is essential for building robust, scalable, and secure modern applications.

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Key Concepts

• [x] Client-Side Discovery - Client queries registry
• [x] Server-Side Discovery - Load balancer queries
• [x] Service Registry - Central service database
• [x] Health Checks - Monitor service availability
• [x] DNS-based Discovery - Use DNS SRV records
• [x] Service Mesh - Advanced service discovery
• [x] Consul, Eureka, etcd - Popular tools
• [x] Kubernetes Service Discovery - Built-in support

Common Use Cases

<aside> 💡 Where to Apply Service Discovery

                        Microservices communication
                        Dynamic load balancing
                        Auto-scaling environments
                        Multi-region deployments
                        Container orchestration
                        Service failover

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Best Practices

• [x] Implement health checks for all services
• [x] Use DNS when possible for simplicity
• [x] Cache service locations with TTL
• [x] Handle discovery failures gracefully