Database Subscriptions
Database subscriptions are a mechanism that allows applications to receive real-time updates when data in a database changes, enabling reactive and event-driven architectures. This concept is commonly implemented through features like change data capture (CDC), triggers, or pub/sub systems integrated with databases. It eliminates the need for polling and provides efficient, low-latency data synchronization across distributed systems.
Developers should learn and use database subscriptions when building applications that require real-time data updates, such as live dashboards, collaborative tools, chat applications, or IoT monitoring systems. It is essential for scenarios where immediate data consistency and responsiveness are critical, reducing overhead compared to traditional polling methods and enabling scalable, event-driven workflows.