问题描述
到目前为止，我唯一了解的是Cloudant提供云支持并在后端使用CouchDB。
The only thing I understand so far is that Cloudant provides cloud support and uses CouchDB in the backend.
推荐答案
Cloudant vs CouchDB 1.6
- Cloudant可水平扩展（相对于数据大小），CouchDB不是
- Cloudant提供全文本搜索，CouchDB不提供
- Cloudant具有不同的身份验证系统
- Cloudant具有Cloudant查询，该查询允许您声明性地设置索引并查询数据库。使用CouchDB，您必须使用视图。
- Cloudant is horizontally scalable (with respect to data size), CouchDB isn't
- Cloudant offers full text search, CouchDB doesn't
- Cloudant has a different authentication system
- Cloudant has Cloudant query which allows you do declaratively set indices and query the DB. With CouchDB, you have to use views.
Cloudant vs CouchDB 2.0
- Cloudant提供全文本搜索，而CouchDB不提供（虽然您愿意进行自定义编译就可以得到它）
- Cloudant具有不同的身份验证系统
除了这些区别外，还有一个明显的地方是Cloudant不需要
Apart from these differences, there's the obvious one where with Cloudant you don't have to worry about provisioning and managing the servers, in exchange for a payment.
关于Cloudant与CouchDB的关系，CouchDB显然是Cloudant产品的核心。但是，Cloudant还为CouchDB贡献了大量代码，从而在2.0中带来了一些关键功能（水平可伸缩性，查询）。 CouchDB PMC上也有不少Cloudant员工。
As to how Cloudant is related to CouchDB, CouchDB is obviously core to Cloudant's offerings. However, Cloudant has also contributed a lot of code to CouchDB resulting in some key features in 2.0 (horizontal scalability, query). Quite a few Cloudant employees are also on the CouchDB PMC.
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