Couchbase Mobile 1.2 introduces significant enhancements in performance for mobile devices by integrating ForestDB as the new storage engine, replacing the previous SQLite option. This upgrade offers faster speeds, improved concurrency, a lower RAM footprint, and automatic database compaction, enhancing the efficiency of mobile applications. ForestDB serves as a persistent key-value storage library and is compatible with various server and mobile operating systems, including iOS and Android. Developers can enable ForestDB in their projects by adjusting settings in their code, such as setting the `storageType` property to ForestDB in iOS projects and using the `setStorageType` function in Android projects. While SQLite remains the default engine, ForestDB provides up to a 5x performance improvement in certain tasks, making it a valuable optional upgrade for developers seeking enhanced performance and responsiveness in their applications. Future blogs will delve into additional features of Couchbase Mobile 1.2, including encryption and further performance optimizations.