PouchDB
PouchDB is an open-source JavaScript database that is designed to run well within web browsers. It enables applications to store data locally while offline, then synchronize it with CouchDB and compatible servers when the application is back online.
PouchDB: Open-Source JavaScript Database for Offline Data Storage
PouchDB is an open-source JavaScript database that enables offline data storage, synchronizing with CouchDB and compatible servers when online.
What is PouchDB?
PouchDB is an open-source JavaScript database that is designed to enable applications to store data locally while offline. It uses CouchDB-style databases that sync bidirectionally. The API is meant to mirror the CouchDB and Apache Cordova plugin APIs as closely as possible so that PouchDB will be a drop-in replacement.
Key features of PouchDB include:
- Enables web applications to store data locally for use while offline
- Syncs bidirectionally with CouchDB servers when connectivity is available
- Designed specifically for web and mobile browsers (IndexedDB, WebSQL)
- Replicates data between browser clients for offline use without a server
- Open source under the Apache License
- API mirrors the CouchDB and Apache Cordova APIs
- Plugs into CouchDB feature ecosystem tools like authentication, validation, querying, indexes and replication
Overall, PouchDB allows developers to build web applications that work as well offline as they do online. The local database syncs in the background when connectivity is available while providing a fully functional persistent store when devices are offline.
PouchDB Features
Features
- Client-side database that runs in the browser
- Built on top of IndexedDB, WebSQL, or LocalStorage
- Supports replication with CouchDB servers
- MapReduce queries
- Pluggable backends
- EventEmitter API
Pricing
- Open Source
Pros
Works offline and syncs when back online
Fast performance for a JavaScript database
Open source with active development
Good for occasionally connected applications
More flexible than LocalStorage for complex data
Cons
Not as fully featured as CouchDB
No built-in user authentication
Not ideal for very large databases
Requires extra code to sync across multiple clients
Official Links
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