Web applications can not be separated from the database, there are a wide variety of databases available for developers to choose from, such as SQL, NoSQL, key value, graph database and so on. The popularity of different databases among developers is benevolent see, but by counting the public cloud platforms like Amazon, it's easy to see that there is a big difference in the prevalence of databases.
Redis Labs interviewed 126 developers using Amazon Cloud services in a recent survey of the popularity of databases among developers of Redis and Memcaches database services in Amazon, Google, IBM and Microsoft's public cloud. Some interesting conclusions are drawn:
One, MongoDB is most popular in NoSQL databases. Nearly half of the developers said they used the MongoDB open source NoSQL database, and the popularity of other NoSQL databases was as follows:
Second, MySQL status is still in the relational database (read: MySQL faces the NoSQL Challenge in Web applications). More than 70% of developers are still using MySQL, followed by SQL Server, PostgreSQL, and Oracle.
Third, performance and scalability are the database challenges that developers are most concerned about, and the rest is usability and flexibility.
NoSQL and relational databases most popular with WEB developers