Cassandra 和 Couchbase 的区别

1. 卡桑德拉：
Cassandra 是一个免费、开源、分布式、广泛的列存储、NoSQL 数据库管理系统。它由 Apache 软件基金会开发，最初于 2008 年 7 月发布。Cassandra 旨在处理跨多个商用服务器的大量数据，提供高可用性且无单点故障。

2. 沙发座：
Couchbase Server 是一个开源、分布式、多模型 NoSQL 面向文档的数据库软件包，针对交互式应用程序进行了优化。它也被称为 Membase。它由 Couchbase, Inc. 开发，最初于 2010 年 8 月发布。

Cassandra 和 Couchbase 的区别：

S.NO.	Cassandra	couchbase
1.	Developed by Apache Software foundation and released on July 2008.	developed by Couchbase, Inc. and initially released on August 2010.
2.	Cassandra is written only in Java language.	Couchbase is written in C++, Erlang, C and Go languages.
3.	The primary database model for Cassandra is Wide Column Store.	The primary database model for Couchbase is Document Store.
4.	There is no secondary database model in Cassandra.	The secondary database model for Couchbase is key-value store .
5.	Cassandra does not supports XML data format.	Couchbase does supports XML data format.
6.	Secondary indexes in Cassandra is restricted.	Couchbase supports the secondary indexes without any restrictions.
7.	Cassandra supports Selectable Replication Factor replication method.	Couchbase supports Master-Slave Replication and Master-Master Replication replication methods.
8.	Cassandra does not provides ACID transactions .	Couchbase provides ACID transactions.
9.	Cassandra does not have any in-memory capabilities.	Couchbase has in-memory capabilities.
10.	Time series data is recorded, processed and retrieved in Cassandra so that data can be recorded from history to be used in the future.	Time series data is not recorded in Couchbase so that historical data cannot be used to predict the future in the company.
11.	Server operating systems for Cassandra are BSD, Linux, OS X, Windows.	Server operating systems for Couchbase are Linux, OS X and Windows.
12.	Famous companies like GitHub, Hulu, Instagram, Reddit, The Weather Channel, etc uses Cassandra.	Famous companies like Lockwood Publishing, Code Weavers, MSLGROUP, The Doyle Group, etc uses Couchbase.