Qihoo 360 Technology Co. Ltd., China's number one Android mobile distribution platform and top malware protection company, utilizes MongoDB as its standard modern database platform, having built over 100 applications on the database since 2011. With more than 1,500 instances running across various locations, including Beijing, Qihoo supports 20 billion queries per day, with three critical applications relying heavily on MongoDB's geospatial indexes and queries for location-based mobile search, caching layer for user authentication data, and log analytics platform. The company has migrated over a dozen projects from MySQL and Redis to MongoDB due to scalability, developer productivity, cost, and flexibility benefits. Qihoo uses a combination of approaches for backups, including filesystem backups, incremental replication, and delayed replicas, and configures MongoDB on private cloud infrastructure with sharded clusters and single replica sets, depending on the application. The company's centralized orchestration platform, HULK, provides automated services and tools for managing MongoDB instances, while also attracting internal teams to move their applications onto the platform. With MongoDB 3.0, Qihoo is excited about document level concurrency control, compression, and improved performance, and advises developers to split out documents of different types and structures into separate collections to maintain ongoing application maintenance complexity.