Couchbase vs Realm: What are the differences?
What is Couchbase? Document-Oriented NoSQL Database. Developed as an alternative to traditionally inflexible SQL databases, the Couchbase NoSQL database is built on an open source foundation and architected to help developers solve real-world problems and meet high scalability demands.
What is Realm? Realm makes it easy to build reactive apps, realtime collaborative features, and offline-first experiences. The Realm Mobile Platform is a next-generation data layer for applications. Realm is reactive, concurrent, and lightweight, allowing you to work with live, native objects.
Couchbase can be classified as a tool in the "Databases" category, while Realm is grouped under "Mobile Database".
Some of the features offered by Couchbase are:
- JSON document database
- N1QL (SQL-like query language)
- Secondary Indexing
On the other hand, Realm provides the following key features:
- Feels like Home - Realm’s data structures look like the Objects and Arrays of your language, but provide additional features such as: querying, relationships & graphs, thread safety, and more.
- Memory-Efficient - Realm is not built on SQLite. Instead, a custom C++ core is used to provide memory-efficient access to your data by using Realm objects, which usually consume less RAM than native objects.
- F-F-Fast! - Realm offers extraordinary performance compared to SQLite and other persistence solutions.
"Flexible data model, easy scalability, extremely fast" is the primary reason why developers consider Couchbase over the competitors, whereas "Good" was stated as the key factor in picking Realm.
Realm is an open source tool with 13.3K GitHub stars and 1.73K GitHub forks. Here's a link to Realm's open source repository on GitHub.
Geefu, Vestiaire Collective, and opening.io are some of the popular companies that use Couchbase, whereas Realm is used by SocialCops, Patreon, and Wongnai. Couchbase has a broader approval, being mentioned in 45 company stacks & 21 developers stacks; compared to Realm, which is listed in 39 company stacks and 5 developer stacks.