AZ-204 Quiz

Cosmos DB

• In the push model, the Change Feed processor requires manual intervention to dispatch tasks to a client.

• Change Feed cannot be used in scenarios that require triggering a function or a logic app, real-time processing, or distributed database updates.

• With Change Feed, you can create low-latency, real-time data processing solutions.

• Change Feed shows all inserts and updates, excluding deletions.

• Change Feed natively displays all modifications, including inserts, updates, and deletions.

• Change Feed functionality is limited to the SQL (Core) API in Azure Cosmos DB.

• A soft-delete pattern is supported in Azure Cosmos DB where a "deleted" attribute can be appended to items intended for deletion.

• The Change Feed retains the changes indefinitely until they are consumed.

• Items can have a time-to-live (TTL) value attached for automatic deletion.

• The pull model in Change Feed allows for manual checkpointing and control over processing speed.

• Change Feed allows microservices to independently react to data changes.

• The Change Feed feature isn't compatible with Azure Cosmos DB's Table and PostgreSQL APIs.

• Change Feed supports reading changes from a specific partition key.

• In the push model, the Change Feed processor independently dispatches tasks to a client.

• The Change Feed presents changes to a container in a chronological sequence.

• There is only one interaction model with Change Feed, which is the push model.

• Change Feed doesn't have a provision for distributing processing tasks across multiple instances.

• The Change Feed feature is an add-on and comes with an additional cost.

• Change Feed in Azure Cosmos DB is automatically enabled upon creation of a container.

• Change Feed can be used to implement event sourcing patterns where the stream of events in Change Feed forms the source of truth and can be used to materialize the application’s state.

• Change feed guarantees order across the partition key values.

• Change Feed functionality is available across all API models in Azure Cosmos DB.