Design Microservices Architecture with Patterns and Principles - Problem: Listen and Polling Outbox Table

The video discusses the transaction outbox pattern, highlighting its benefits and the challenges it introduces, such as performance issues and resource wastage due to polling operations. It also addresses the dual write problem and proposes a solution using Change Data Capture (CDC) to improve efficiency and reliability.

What is a primary issue introduced by the transaction outbox pattern?

• It requires a message transmitter service.

• It reduces system performance.

• It eliminates the need for polling.

• It simplifies the architecture.

How do polling operations affect system performance?

• They enhance system efficiency.

• They reduce latency.

• They degrade performance and waste resources.

• They eliminate the dual write problem.

What is a consequence of unnecessary polling in the transaction outbox pattern?

• Increased system efficiency

• Reduced resource consumption

• Wasted resources and latency overhead

• Improved data accuracy

What problem can arise from the read database and publish event operations?

• Improved data consistency

• The dual write problem

• Reduced system limitations

• Enhanced polling efficiency

What solution is proposed for the issues with the transaction outbox pattern?

• Increasing the number of message transmitters

• Adopting Change Data Capture (CDC)

• Implementing a faster polling mechanism

• Using a larger outbox table