How SuNing’s Big Data Engine Powers Health‑Code Pandemic Management

Under pandemic‑driven grid management, communities became isolated islands, prompting the need for a mechanism that recognizes travel identities and enables inter‑community data sharing.

On February 14, SuNing introduced a Public Travel Information Registration System using digital health codes to support precise epidemic control in Nanjing. Within a week, registrations exceeded 150,000, and more than 50 cities across China began planning similar implementations.

The health code creates a comprehensive travel information database through citizen scan‑ins, providing authorities with timely, accurate data for outbreak response, contact tracing, hotspot identification, and resource allocation.

SuNing’s big‑data platform supports over 8,000 buses and nearly 300 subway lines in Nanjing, leveraging massive data collection, processing, and analysis capabilities honed from years of high‑traffic e‑commerce events.

To handle city‑wide peak travel data, SuNing deployed ample server resources and talent, achieving second‑level transmission for billion‑scale real‑time data. Its high‑availability architecture sustains over 25,000 concurrent requests per second, operates in a multi‑active environment with seamless primary‑backup switching, and transmits data via Kafka to a self‑developed online real‑time computing platform for orderly storage and analysis.

Leveraging a real‑time search engine, SuNing can query billions of records within seconds, precisely locating individual travel trajectories.

The company also offers an integrated intelligent analysis platform that delivers second‑level data and visual dashboards, enabling transportation departments to assess population flow hotspots quickly.

Data governance measures classify and grade data, applying access controls, masking, and operational safeguards to protect privacy and information security.

By harnessing emerging technologies, SuNing continues to drive digital solutions that support government and citizen needs, contributing to pandemic resilience and broader digital transformation.