基于GreatDB的高并发系统国产化改造与架构演进研究OA

With the surge in concurrency within core telecommunications services and the advancement of the national Xinchuang(IT Application Innovation)strategy,the inherent bottlenecks of traditional centralized commercial databases—such as Oracle—regarding cost,scalability,and technological autonomy have become increasingly pronounced.Focusing on the Sichuan Mobile Subscriber Activa-tion and Deactivation System as a case study,this paper details the comprehensive process and practical implementation of its migration to a domestic distributed database(GreatDB).To address challenges encountered during the migration—including complex compatibility adaptations,high overhead associated with distributed transactions,rapid fluctuations in cluster load,and limited performance for analyti-cal SQL queries—this paper proposes a suite of technical solutions:a progressive"de-Oracalization"strategy,a balance between data consistency and performance,dynamic architectural evolution,and asymmetric replication.Test results and operational data demonstrate that,following the transformation,the system's peak Transactions Per Second(TPS)increased by 150%(reaching 6,250),the average re-sponse time for single SQL queries decreased by 60%,annual maintenance costs plummeted by 80%,and a high-availability guarantee with a Recovery Time Objective(RTO)of less than 30 seconds was successfully achieved.This study validates the applicability of distrib-uted databases in core telecommunications scenarios characterized by extremely high concurrency,providing a crucial engineering refer-ence and theoretical foundation for the underlying reconstruction and evolution of similar large-scale legacy systems.