Mechanisms and methods are provided for optimizing data synchronization between clients and database systems. These mechanisms and methods provide optimizations for synchronization requests, by either breaking a synchronization request into multiple smaller requests, or by executing different code routines for differing client types, or by pre-caching data that a user is anticipated to want at a future point. Such optimization techniques can enable clients with varying capacities (e.g., mobile client vs. full desktop client) to optimally utilize their respective device capabilities.