Apache CouchDB

Protocolo de Dados Descentralizado

An open-source NoSQL document database with an HTTP/JSON API, built for reliability and for multi-primary sync that scales from large clusters down to mobile and browser clients. Any CouchDB database, on a server or a device, can replicate with any other over the documented CouchDB Replication Protocol, which synchronises JSON documents between two peers over HTTP/1.1 using the public REST API and the project's multi-version concurrency control (MVCC) model; conflicting edits are detected through revision trees rather than merged automatically. CouchDB is the reference implementation of that protocol, which PouchDB and other tools reuse. It is a project of the Apache Software Foundation .

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Detalhes

Licença Permissive (Apache-2.0). https://github.com/apache/couchdb (Erlang, with C, C++ and JavaScript components; Fauxton web console in a separate repository)
Status de Dev 🟢 Ativo
Proprietário Apache Software Foundation (top-level project: Apache CouchDB PMC)
Órgão de Governança Apache CouchDB Project Management Committee at the Apache Software Foundation
País United States (the Apache Software Foundation is a US charity; the project's committers are international)
Ano de Início 2008
Stack Erlang/OTP core, with C, C++ and JavaScript components; HTTP/JSON REST API; Mango queries and map/reduce views; clustering in the 3.x series; packages for Windows, macOS, Debian/Ubuntu and RHEL/CentOS
Financiamento ASF project supported by volunteer and employer-sponsored committers and ASF sponsorship; no project-level funding stated
Última Investigação 29 de out. de 2026

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Armazenamento local-first Portabilidade de dados Autoalojável

Protocolo de Dados Descentralizado Atributos

Origens A reliable, always-available document database that can be replicated between servers and, increasingly, mobile and browser clients, with a plain HTTP/JSON interface any language can use
Banco de Dados CouchDB: this entry is the database. A document store with MVCC revision trees and, in the 3.x series, clustering (the documentation has a Cluster Management guide)
Linguagem de Consulta HTTP/JSON API; Mango selector queries and map/reduce views (the documentation has a Query Server and API reference)
Formatos de Dados JSON documents with revision identifiers and binary attachments; JSON over HTTP
Edição Colaborativa em Tempo Real Partial: documents replicate between peers and conflicting edits are surfaced as revision conflicts for the application or the deterministic winner rule to resolve; there is no automatic character-level merge
Edição de Texto Rico Not stated by the project.
Suporte Móvel Through sync: the home page says CouchDB scales down to mobile; PouchDB and other clients provide the on-device database
Suporte Web Yes: the Fauxton web console and an HTTP/JSON API usable directly from browsers
Aplicativos Nativos Server packages for Windows, macOS and Linux; no native client library of its own
Termos Free and open source (Apache-2.0)
Fundos Not stated by the project.
Baseado Em Its own MVCC and replication model; the replication protocol is the shared standard that PouchDB and other tools implement
Arquitetura P2P Peer-to-peer replication between servers and clients: any two CouchDB databases (or compatible stores) replicate with each other over HTTP, in either direction or both, without a coordinator; the project presents this as multi-primary sync. It is not an overlay network, and discovery is manual
Rede de Sobreposição None: replication endpoints are addressed by URL; the cluster mode is a data-centre feature, not an overlay
Endereçamento por Conteúdo No: documents are addressed by identifier and revision (revision ids are hashes of content), not by content hash
Local-First Enabling: the replication model underpins local-first clients such as PouchDB; the server itself is a conventional database that can run anywhere, including on a user's own hardware
Criptografia de Ponta a Ponta (E2EE) No: the database stores documents as submitted; transport security is TLS and encryption at rest is left to the platform
Biblioteca de CRDTs No: conflicts are tracked with revision trees rather than CRDTs
Tolerância a Falhas Bizantinas No: replication trusts the authenticated peer; the project designs for crash and partition tolerance, not malicious replicas
Assinatura N/A: documents are not signed; authentication is cookie, basic or proxy-based on the server
Permissões Server-side: per-database admin and member roles with validate_doc_update functions; no end-to-end document permissions
Compatibilidade com a Web Semântica N/A: JSON document store with no RDF layer
Contrato Inteligente N/A: no ledger or contract component
Posição na Pilha de Protocolo Application-layer: HTTP/1.1 REST API and replication protocol
Incorporação de Ativo / Valor None: no token or value-transfer mechanism
Maturidade / Padronização do Protocolo Mature: the CouchDB Replication Protocol is written down as a normative specification using RFC 2119 language and is implemented by several independent projects, though it is an ASF project specification rather than an IETF or W3C standard

Relacionamentos

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