Component to System State Store
Synchronous Event Posting
Last updated
Synchronous Event Posting
Last updated
In a RECQ architecture, components interact with the System State Store (SSS) in a specific manner for managing state changes. This interaction follows a request/response pattern with a synchronous protocol managed by the SSS itself.
Communication Protocol:
Synchronous Event Posting: Unlike the asynchronous communication used for component-to-component interaction, posting a state change event to the SSS is a synchronous operation.
Components send a request message directly to the SSS containing the event data representing the desired state change.
The SSS validates the event and attempts to persist it in its storage mechanism.
Upon successful persistence, the SSS sends a response message back to the component, confirming the success or failure of the operation.
The synchronous nature ensures the component receives confirmation before proceeding with further actions that might depend on the state change.
Benefits of Synchronous Event Posting:
Strong Consistency: Synchronous event posting guarantees that the event is successfully persisted in the SSS before the component receives a confirmation. This ensures strong consistency between the component's view of the state and the actual state stored in the SSS.
Simplified Error Handling: The component receives immediate feedback on the success or failure of the event posting, allowing for easier error handling and potential retries if necessary.
Considerations:
Reduced Scalability: Synchronous communication can introduce bottlenecks if a large number of components frequently update the state. This might require careful configuration and optimization of the SSS to handle high volumes of event posting requests.
Potential Latency: If components rely heavily on immediate confirmation, synchronous event posting can introduce slight latency compared to asynchronous approaches.
Conclusion:
The RECQ architecture utilizes a synchronous request/response pattern for component-to-SSS communication when posting state change events. This approach guarantees strong consistency and simplifies error handling, but it's important to consider potential scalability and latency impacts for high-volume systems. The specific communication strategy might be adjusted based on the application's specific needs and performance requirements.
