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China Mobile

Information2 Assists China Mobile in Building a Billing System Disaster Recovery System

In the wave of digital transformation, the billing system, as the core of operators’ business, places immense importance on its high availability and data security. China Mobile, in collaboration with Information2, has successfully built an efficient and reliable disaster recovery system through innovative cross-cluster semantic-level replication technology. This not only enhances the stability and performance of the billing system but also provides a solid guarantee for the sustainable development of the operator’s business.

Customer Challenges


The billing system, as a crucial part of the operator’s business, needs to ensure 24/7 high availability to guarantee service continuity and user satisfaction. However, in the case of a primary database failure or unavailability, how to quickly switch to a standby database and ensure service continuity has become a major challenge for operators. Especially when establishing cross-regional disaster recovery centers, ensuring business continuity is particularly important.

The distance between the China Mobile centers in Hohhot and Zhengzhou Airport Economic Zone exceeds 300 kilometers. To meet disaster recovery needs, regular disaster recovery testing and verification are indispensable. The testing process involves simulating a primary database failure and verifying whether the standby database switchover and data synchronization processes operate correctly. However, traditional synchronization methods cannot independently synchronize the relationship between two MySQL clusters, posing a significant obstacle to building a disaster recovery system.

I2 Solution


To address these challenges, Information2 provides a MySQL-based cross-cluster semantic-level replication solution. This solution utilizes the GTID (Global Transaction Identifier) mechanism to ensure data consistency and integrity between different MySQL clusters. By leveraging GTID, data resumption can be achieved when the production MySQL undergoes a switchover, significantly enhancing synchronization stability.

During implementation, China Mobile established two independent MySQL clusters in Hohhot and Zhengzhou Airport Economic Zone. These two clusters synchronize and replicate data using Information2’s cross-cluster semantic-level replication technology. During disaster recovery testing, a primary database failure scenario was simulated, and the standby database switchover and data synchronization processes were successfully verified. Test results indicate that the solution can quickly take over business operations and continue providing services, effectively reducing downtime.

Solution Effects


High Availability: Ensures system takeover by another cluster during failures, enhancing system stability.

Data Protection: Achieves comprehensive data protection and reliability, ensuring business continuity.

Performance Improvement: Load balancing enhances system performance and scalability, providing a quality user experience.

Disaster Recovery Verification: Regular testing verifies the reliability of the disaster recovery plan, improving rapid recovery capabilities.



Customer Evaluation

The cross-cluster semantic-level replication solution provided by Information2 not only solves our long-standing disaster recovery challenges but also significantly improves the stability and performance of the billing system. With Information2’s technical support, we have successfully built an efficient and reliable disaster recovery system, providing a solid guarantee for the sustainable development of our business.

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