Programmer DD

Dec 26, 2022 · Operations

Inside Alibaba Cloud Hong Kong Region C Outage: Timeline, Impact, and Lessons Learned

On December 18, 2022, Alibaba Cloud's Hong Kong Region Zone C suffered a massive service interruption—the longest in its operational history—prompting a detailed incident response, extensive service impact across compute, storage, and networking, and a thorough analysis that led to concrete infrastructure and communication improvements.