# couchbase/couchbase-lite-ios

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1,664 stars · 305 forks · Objective-C · Apache-2.0

## Links

- GitHub: https://github.com/couchbase/couchbase-lite-ios
- awesome-repositories: https://awesome-repositories.com/repository/couchbase-couchbase-lite-ios.md

## Topics

`database` `ios` `macos` `mobile` `nosql` `objective-c` `swift` `sync`

## Description

Couchbase Lite for iOS is an embedded NoSQL database engine designed for native mobile and desktop applications. It functions as a library within the application process, providing local document storage and structured querying capabilities that allow software to remain fully functional and responsive without an active internet connection.

The library distinguishes itself through a replication engine that synchronizes local database changes with a central server to maintain consistent state across multiple devices. This synchronization process utilizes a delta-based protocol to transmit only modified document portions, while automated conflict resolution logic manages divergent data states that occur during offline operation.

The storage system utilizes a JSON document model and B-tree indexing to manage data, supported by multi-version concurrency control to enable simultaneous read and write operations. These features facilitate offline-first development by ensuring that complex information remains accessible and performant directly on the device.

## Tags

### Data & Databases

- [Mobile Databases](https://awesome-repositories.com/f/data-databases/mobile-databases.md) — Provides a document-oriented storage solution for native mobile and desktop applications.
- [Data Synchronization Engines](https://awesome-repositories.com/f/data-databases/data-synchronization-engines.md) — Maintains consistency between local and remote data stores through event-driven updates and replication.
- [Delta-Based Synchronization Engines](https://awesome-repositories.com/f/data-databases/data-synchronization/delta-based-synchronization-engines.md) — Synchronizes data by transmitting only incremental changes between states to minimize bandwidth usage.
- [Document Storage](https://awesome-repositories.com/f/data-databases/document-storage.md) — Enables local persistence of structured data to ensure information remains accessible without an internet connection. ([source](https://github.com/couchbase/couchbase-lite-ios#readme))
- [Embedded Database Engines](https://awesome-repositories.com/f/data-databases/embedded-database-engines.md) — Integrates directly into the application process to eliminate network latency and external server dependencies.
- [Remote Synchronization](https://awesome-repositories.com/f/data-databases/local-databases/remote-synchronization.md) — Replicates local database changes to a central server while pulling incoming updates to maintain consistent state. ([source](https://github.com/couchbase/couchbase-lite-ios#readme))
- [NoSQL Databases](https://awesome-repositories.com/f/data-databases/nosql-databases.md) — Stores structured non-relational data locally for offline access and high performance.
- [Offline-First Persistence](https://awesome-repositories.com/f/data-databases/offline-first-persistence.md) — Supports application functionality without network connectivity through local data caching and synchronization.
- [Conflict Resolution Strategies](https://awesome-repositories.com/f/data-databases/data-integration-synchronization/replication-control-policy/conflict-resolution-strategies.md) — Provides automated logic to merge divergent data states when multiple devices update the same record while offline.
- [Data Querying](https://awesome-repositories.com/f/data-databases/data-querying.md) — Provides interfaces for filtering, sorting, and retrieving stored data collections locally. ([source](https://github.com/couchbase/couchbase-lite-ios#readme))
- [Cross-Device Synchronization Engines](https://awesome-repositories.com/f/data-databases/data-synchronization/cross-device-synchronization-engines.md) — Maintains consistent application state and data accessibility across multiple computers and mobile devices.
- [JSON Document Stores](https://awesome-repositories.com/f/data-databases/json-document-stores.md) — Stores information as schema-less JSON documents to provide flexibility for evolving data structures.
- [NoSQL Data Modeling](https://awesome-repositories.com/f/data-databases/nosql-data-modeling.md) — Uses non-relational document models to handle flexible data structures and efficient storage on mobile devices.
- [B-Tree](https://awesome-repositories.com/f/data-databases/storage-engines/b-tree.md) — Organizes data in balanced tree structures on disk to optimize for efficient range queries and lookups.
- [MVCC Implementations](https://awesome-repositories.com/f/data-databases/versioned-storage/mvcc-implementations.md) — Maintains multiple versions of data to enable simultaneous read and write operations without database-wide locking.