Description: Stateful stream refers to a real-time data processing model that allows applications to maintain persistent information across the events being processed. Unlike stateless data streams, where each event is treated in isolation, in a stateful stream, the system can remember and use information from previous events to influence the processing of future events. This is crucial in applications that require continuous context, such as user session tracking, real-time trend analysis, or transaction management. Key features of a stateful stream include the ability to store intermediate data, perform cumulative calculations, and maintain data consistency over time. This approach enables developers to build more complex and dynamic applications that can adapt to changes in data and respond more effectively to business needs. In the context of stream processing frameworks, state management is handled efficiently, allowing users to define and manage the state of their applications easily and scalably, resulting in more robust and flexible data processing.
