The Private Cloud Architecture Evolution of Yongjinbao

In 2014, Sinolink Securities launched Yongjinbao, the industry’s first internet-based securities service. To support high concurrency and rapid deployment, the firm pioneered a hybrid cloud architecture: market data services were deployed on the public cloud, while trading-related data and applications resided on a private infrastructure. By utilizing independent virtual hosts that eliminated the need for centralized storage, the platform minimized data center footprint and established a high-availability architecture integrated with Yongjinbao’s application capabilities.

However, despite early virtualization in on-premises data centers, the infrastructure continued to face challenges including low hardware utilization, high procurement costs, and operational complexity.

To address these challenges, Sinolink Securities sought to evolve its on-premises data center infrastructure toward greater agility, stability, and elasticity. The goal was to simplify operations through "cloud-native" features such as automation and intelligence, providing highly reliable and available support for Yongjinbao’s business applications.

Following years of technical tracking, Sinolink Securities recognized that Hyper-Converged Infrastructure (HCI) had reached maturity in functionality and reliability. With core advantages such as distributed architecture, horizontal scaling, and self-healing capabilities, HCI offers robust support for private cloud construction. Consequently, Sinolink Securities began transitioning to a private cloud resource pool based on HCI to enhance overall system efficiency while reducing management and operational costs.

The new Yongjinbao private cloud resource pool consists of 6 clusters across 5 IDCs, totaling 46 HCI nodes. Powered by SMTX OS, the architecture pools local disks into a distributed storage system. Nodes synchronize via 10GbE networks with multi-replica strategies, ensuring reliable, high-capacity storage for virtualization.

Currently, this HCI infrastructure supports Yongjinbao’s full-stack access and microservices platforms, including Web front-ends, middleware (Java, Kafka, Redis, Memcached), and databases (MongoDB, PostgreSQL, MySQL).