Service Discovery & Registration

In microservices, applications are broken into many small, independent services. How do these services find each other to communicate? This is where Service Discovery comes in.

It's a key pattern that helps services locate each other automatically. Without it, managing service addresses manually would be a nightmare!

Imagine you have a 'Product Service' and an 'Order Service'. If the Order Service needs to call the Product Service, it needs its network location (IP address and port).

• Manual Configuration: Hardcoding addresses means constant updates if a service moves or scales.
• Scaling Issues: When you add more instances of a service, how do others know about them?
• Resilience: What if a service instance fails? Others need to know to avoid it.

Service discovery solves these problems dynamically.