Client-Side Load Balancing with Ribbon

In a microservices world, applications often have multiple copies (instances) of the same service running. This is for scalability and high availability.

Load balancing is the process of distributing incoming network traffic across these multiple instances. It ensures no single service instance gets overwhelmed.

• Scalability: Handle more users by adding more instances.
• High Availability: If one instance fails, others can take over.
• Performance: Distribute work evenly to reduce response times.

There are two main types of load balancing:

• Server-Side Load Balancing: A dedicated component (like Nginx or a hardware load balancer) sits in front of your services. Clients send requests to this component, and it forwards them to an appropriate service instance.
• Client-Side Load Balancing: The client application itself is responsible for knowing about all available service instances and choosing one for each request. This is where tools like Ribbon come in!