Stateful / Stateless
Stateful Applications: These applications retain data across sessions, often requiring persistent storage or ordered scaling. Examples: Databases (PostgreSQL, MongoDB), Kafka, Redis Stateless Applications: These applications do not store client data between requests. Each instance operates independently, making scaling and deployments straightforward. Examples: Web servers, REST APIs, front-end applications

Stateful Applications:
These applications retain data across sessions, often requiring persistent storage or ordered scaling.
Examples: Databases (PostgreSQL, MongoDB), Kafka, Redis
Stateless Applications:
These applications do not store client data between requests. Each instance operates independently, making scaling and deployments straightforward.
Examples: Web servers, REST APIs, front-end applications