CDC High Availability Implementation

Client Summary and Challenge

A Saudi Arabian bank implemented CDC to replicate data from IBM VSAM to Kafka. They required support to design and implement a High Availability (HA) solution for their CDC environment. After initial deployment, the HA requirements expanded to support failover of individual CDC components, requiring updates to the design. The solution also needed to be flexible enough to accommodate future replication from Oracle with minimal changes.

Objectives

The goal was to deliver a robust HA solution that maintained replication integrity, supported failover at a granular level, and allowed future expansion to additional data sources.

Approach and Technical Highlights

The CDC HA architecture was designed and implemented to meet the bank’s evolving requirements. The design was expanded to support failover of individual components while ensuring minimal disruption to existing replication. Flexibility was built into the architecture to allow future Oracle replication to be integrated easily. Key technical considerations included real-time monitoring, failover handling, and maintaining high data availability.

Outcome and Benefits

The enhanced HA design was successfully implemented, providing resilient replication with granular failover capabilities. The flexible architecture ensures the bank can extend replication to Oracle with minimal redesign. The solution improved operational reliability and gave the client confidence in the robustness of their critical replication processes.

Lessons Learned and Follow-Up

Designing CDC HA solutions with future expansion in mind reduces rework and ensures scalability. Ongoing support may include integrating Oracle replication and monitoring system performance as the environment evolves.