OrbitDB

OrbitDB is a serverless, distributed, peer-to-peer database.

Free • Open Source
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What is OrbitDB?

OrbitDB is a serverless, distributed, peer-to-peer database. OrbitDB uses IPFS as its data storage and IPFS Pubsub to automatically sync databases with peers. It's an eventually consistent database that uses CRDTs for conflict-free database merges making OrbitDB an excellent choice for decentralized apps (dApps), blockchain applications and offline-first web applications.

OrbitDB provides various types of databases for different data models and use cases:

log: an immutable (append-only) log with traversable history. Useful for "latest N" use cases or as a message queue.
feed: a mutable log with traversable history. Entries can be added and removed. Useful for "shopping cart" type of use cases, or for example as a feed of blog posts or "tweets".
keyvalue: a key-value database just like your favourite key-value database.
docs: a document database to which JSON documents can be stored and indexed by a specified key. Useful for building search indices or version controlling documents and data.
counter: Useful for counting events separate from log/feed data.

All databases are implemented on top of ipfs-log, an immutable, operation-based conflict-free replicated data structure (CRDT) for distributed systems. If none of the OrbitDB database types match your needs and/or you need case-specific functionality, you can easily implement and use a custom database store of your own.

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