# Stateless Service

> Deploy stateless applications using ReplicaSets for scaling

- **Category**: Cloud
- **Subcategory**: Behavioral
- **Canonical URL**: https://designpattern.fyi/patterns/k8s_stateless_service/

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## Description
The Stateless Service pattern deploys stateless applications using ReplicaSets, which manage multiple identical pod instances. Stateless services do not maintain persistent state and can be scaled horizontally by adding more replicas. This pattern is ideal for web servers, APIs, and other applications that can handle requests independently.


## Use Cases
Use when deploying stateless applications that need horizontal scaling or when you want simple deployment and scaling for web services.





## Trade-offs


### Advantages

- Simple deployment and scaling

- Easy to distribute load

- No state management complexity

- Supports horizontal pod autoscaling




### Considerations & Drawbacks

- Not suitable for stateful applications

- Requires external state management if needed

- Potential for inconsistent distributed state