PouchDB
PouchDB is an open-source JavaScript database that enables developers to store data locally in the browser or on mobile devices, with seamless synchronization to CouchDB and compatible servers. It uses IndexedDB and WebSQL for browser storage and SQLite for Node.js and Cordova/PhoneGap environments, providing offline-first capabilities. This allows applications to work without an internet connection and sync data when connectivity is restored.
Developers should learn PouchDB when building offline-first web or mobile applications, such as progressive web apps (PWAs), hybrid mobile apps, or collaborative tools that require real-time data sync across devices. It's particularly useful in scenarios with unreliable internet connectivity, as it ensures data persistence and conflict resolution during synchronization. Use cases include note-taking apps, inventory management systems, and collaborative editing platforms where users need to work offline and sync changes later.