Which database is best for microservices?

Should microservices use different databases?

It means that we can use different database technologies for different microservices. So one service may use an SQL database and another one a NoSQL database. That's feature allows using the most efficient database depending on the service requirements and functionality.

Do microservices need their own database?

You do not need to provision a database server for each service. For example, if you are using a relational database then the options are: Private-tables-per-service – each service owns a set of tables that must only be accessed by that service.

Is MongoDB good for microservices?

Is MongoDB compatible with microservices? Because microservices architecture is distributed, there are more potential failure points, so microservices need to be designed for redundancy. MongoDB Atlas readily meets this requirement with built-in redundancy through MongoDB replica sets.

Does microservices use SQL database?

You'll have to start building microservices with what you have – a relational database, such as DB2, MS SQL Server, MySQL, PostgreSQL, and gradually split it into several small services. On top of that, you can use a relational database in microservices if you apply polyglot persistence.

What kind of database do I need for a microservice?

Other services might need a NoSQL database such as MongoDB, which is good at storing complex, unstructured data, or Neo4J, which is designed to efficiently store and query graph data. Keep each microservice’s persistent data private to that service and accessible only via its API. A service’s transactions only involve its database.

Is there a place for SQL in a microservices architecture?

It can, and there is certainly a place for that in many microservices architectures, but SQL is also implemented in at least two other types of databases that can be useful choices for many teams implementing microservices. The first is “small SQL,” which is the domain of open source databases like MySQL and Postgres.

How many database patterns are there for microservices?

We would learn about 7 database patterns for Microservices. The include: 1. Database per Service In this pattern, the microservice’s persistent data are kept private to that service and is can only be accessed through its API.

Can external services access a microservice’s database?

A transaction by a service involves only it’s database. Therefore, the database for that service is essentially part of the implementation of that microservice and thus cannot be accessed by external services. Ways to keep a microservice’s data private includes: