Microservices¶

Kubernetes makes it easy to deploy a lot of diverse applications
Those applications can be monoliths that don’t have anything to do with each other, or microservices, small services that make up one application
The microservices architecture is increasingly popular
This approach allows developers to split up the application in multiple independent parts
Having to manage microservices can put an operational strain on the engineering team
Between microservices there is usually:
- No encryption
- No retries, no failover
- No intelligent load balancing
- No routing decisions
- No metrics / logs / traces
- No access control
Work around this by using a proxy container, called a Sidecar, which can give you:
- Encryption between apps
- Retries when connection fails
- Intelligent load balancing
You can add a management interface for the Sidecars and have:
- Routing decisions
- Metrics / logs / traces
- Access control