XD.com, formerly known as VeryCD, founded in 2002, is one of the top 100 internet companies in China. The company was one of the earliest companies to create internet sharing sites in China, and since 2009, with the new independent brand of XD.com created, the company has expanded its efforts in the research and development as well as the operations of web and mobile gaming. XD.com's core business operations are diverse and include game research and development, animation production, live-action entertainment, as well as several other areas within the gaming and entertainment industry. On a daily basis, XD.com will have more than one million active users playing online games concurrently, with the services online 24/7.

To support the rapid expansion of its online game services overseas, XD.com requires the services of a well-established and reliable cloud service provider. In particular, XD.com requires a system for unified deployment across the globe that can provide low-latency, high stability services globally. This is especially important in densely populated markets like China, Southeast Asia, the United States, and Europe. During peak gaming hours, XD.com's servers deal with more than one million concurrent players. Given this, one important requirement of XD.com is fast data read/write speeds. And another requirement is little to no down time so to have minimal service interruptions during game upgrade and restart scenarios.

Alibaba Cloud was a natural choice for XD.com given its superior database management systems. In particular, Alibaba Cloud PolarDB, being designed for business-critical database applications, can deliver the fast performance, high concurrency, and automatic scaling that XD.com requires. PolarDB helps XD.com achieve high read/write capabilities that are in fact three times higher than MySQL performance. At the same time, this solution has also greatly shortened the maintenance time during game upgrades and server restart scenarios. PolarDB’s high-availability design allows XD.com to switch instances within a quick window of 30 to 60 seconds, ensuring the integrity of XD.com's all-important data. PolarDB’s fully compatibility with MySQL has enabled XD.com to perform seamless database migration, making for no hassle yet allowing XD.com to reap all the benefits of Alibaba Cloud's superior database management system. With implementing Alibaba Cloud PolarDB into its systems, XD.com is able to support one million users playing at the same time without a sweat.