1. 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。
2. MySQL：
MySQL 是一种基于结构化查询语言 (SQL) 的开源关系数据库管理系统 (RDBMS)。它由oracle 公司开发和管理，于1995 年5 月23 日首次发布。它被广泛应用于许多小型和大型工业应用程序，能够处理大量数据。
Couchbase MySQL 之间的区别：
| S.NO. | Couchbase | MySQL |
|---|---|---|
| 1. | Developed by Couchbase, Inc. and initially released on August 2010. | Developed by Oracle and released on May 1995. |
| 2. | Couchbase is written in C++, Erlang, C and Go languages. | MySQL is written in C and C++. |
| 3. | The primary database model for Couchbase is Document Store. | The primary database model for MySQL is Relational DBMS. |
| 4. | The secondary database model for Couchbase is key-value store. | The secondary database model MySQl is Document Store. |
| 5. | Couchbase is Data Schema free. | In MySQL Data Schema is fixed. |
| 6. | Couchbase provides Eventual Consistency and Immediate Consistency methods to ensure consistency in a distributed system. | MySQL only provides Immediate Consistency method to ensure consistency in a distributed system. |
| 7. | Couchbase does not provides the concept of Referential Integrity. Hence, no Foreign Keys. | MySQL provides the concept of Referential Integrity and have Foreign keys. |
| 8. | Couchbase supports Map Reduce method. | MySQL does not supports Map Reduce method. |
| 9. | Server operating systems for Couchbase are Linux, OS X and Windows. | Server operating systems for MySQL are FreeBSD, Linux, OS X, Solaris, Windows. |
| 10. | Famous companies like Oxylabs, Kaidee, Immowelt AG, Trendyol Group, etc uses Couchbase. | Famous companies like Airbnb, Pinterest, Slack, Udemy, Twitter, etc uses MySQL. |