Importance:?

• Stateful Services: If a service needs to keep track of user state (e.g., user

preferences, shopping carts), sticky sessions ensure the user’s requests are

directed to the same instance, preventing session data loss.

• Consistency: In systems with user sessions (e.g., e-commerce platforms),

ensuring that all requests from a user go to the same instance prevents

inconsistencies in data retrieval.

Example: In an Authentication Service, where a user logs in and the session is maintained

on the instance, sticky sessions ensure that subsequent requests from that user are routed

to the same service instance.