CouchDB 是一个开源的面向文档的数据库管理系统，可通过 RESTful JavaScript Object Notation (JSON) API 访问。 术语“Couch”是“Cluster Of Unreliable Commodity Hardware”的首字母缩写，反映了 CouchDB 的目标是高度可扩展、提供高可用性和可靠性，即使在容易出现故障的硬件上也是如此。 CouchDB 最初是用 C++ 编写的，但在 2008 年 4 月，该项目转移到 Erlang OTP 平台进行容错测试。
(CouchDB is an open source document oriented database management system, which can be accessed through restful JavaScript object notation (JSON) API. The term "couch" is an acronym for "cluster of unreliable commodity hardware", which reflects the goal of CouchDB is to be highly scalable, provide high availability and reliability, even on hardware prone to failure. CouchDB was originally written in C + +, but in April 2008, the project was transferred to Erlang OTP platform for fault tolerance testing.)
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