Technical Architecture, Observability, and Operational Practices of Tencent Health Code System

The article details how Tencent’s health‑code platform leveraged a cloud‑native, serverless architecture, extensive observability (Prometheus, Grafana, RUM), rigorous capacity testing, chaos engineering, and ITIL‑based change management to sustain billions of page views, support massive concurrency, and ensure reliable, scalable epidemic‑control services.

Health CodeObservabilityOperations

0 likes · 16 min read

Technical Architecture, Observability, and Operational Practices of Tencent Health Code System

Programmer DD

Jan 6, 2022 · Operations

Why Xi’an Health Code Crashed: Static Assets, No CDN, and 125 Gbps Bandwidth

A detailed post examines why the Xi’an health‑code service collapsed, showing that the lack of CDN for static assets and the resulting 125 Gbps bandwidth demand at 33 k QPS overwhelmed a single data‑center link, rather than any server‑side QR‑code generation issue.

CDNHealth Codenetwork

0 likes · 4 min read

Why Xi’an Health Code Crashed: Static Assets, No CDN, and 125 Gbps Bandwidth

Java Architect Essentials

Oct 1, 2021 · Mobile Development

How to Quickly Access Health Code on iPhone and Android Devices

This guide explains step‑by‑step methods for iPhone and Android users to instantly open their health code using Siri shortcuts, double‑tap back gestures, home‑screen shortcuts, and voice assistants, improving efficiency during pandemic‑related checks.

AndroidHealth CodeMobile

0 likes · 5 min read

How to Quickly Access Health Code on iPhone and Android Devices

Programmer DD

Jul 3, 2021 · Mobile Development

Create a One‑Tap iPhone Shortcut to Open Your Health Code Instantly

This guide shows how to set up an iPhone shortcut that instantly displays your health code with a single tap, detailing each step from adding the code to the home screen to configuring a trigger in the Accessibility settings.

AutomationHealth CodeMobile Tips

0 likes · 4 min read

Create a One‑Tap iPhone Shortcut to Open Your Health Code Instantly

Tencent Tech

Mar 11, 2020 · Big Data

Scaling the Health Code: Tencent Cloud Elasticsearch at Billion-User Scale

Leveraging Tencent Cloud Elasticsearch, the nationwide COVID‑19 health code platform handled over 1.6 billion scans for more than 900 million users, achieving millisecond‑level search, seamless horizontal scaling, multi‑zone high availability, and robust security, while simplifying development through RESTful APIs and rich UI tools.

Big DataDistributed SystemsElasticsearch

0 likes · 12 min read

Scaling the Health Code: Tencent Cloud Elasticsearch at Billion-User Scale

Suning Technology

Feb 22, 2020 · Big Data

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

During the COVID‑19 pandemic, SuNing launched a public travel information registration system that leverages massive big‑data processing, high‑concurrency architecture, Kafka streaming, and real‑time analytics to create a city‑wide health‑code network, enabling precise epidemic control, mobility tracking, and robust data privacy safeguards.

Big DataHealth CodeReal-time analytics