16.1 Multi-Tenancy GORM

GORM supports Multi-tenancy and integrates with Micronaut.

To use Micronaut and GORM multitenancy capabilities you must have the multitenancy-gorm dependency on your classpath. For example in build.gradle:

build.gradle

compile "io.micronaut.configuration:micronaut-multitenancy-gorm"

GORM is a powerful Groovy-based data access toolkit for the JVM with implementations several data access technologies (Hibernate, Neo4j, MongoDB, GraphQL …​).

GORM supports the following different multitenancy modes:

• DATABASE - A separate database with a separate connection pool is used to store each tenants data.

• SCHEMA - The same database, but different schemas are used to store each tenants data.

• DISCRIMINATOR - The same database is used with a discriminator used to partition and isolate data.

In order to use GORM - Multitenancy you will need to configure the following properties: grails.gorm.multiTenancy.mode and grails.gorm.multiTenancy.tenantResolverClass.

Micronaut support for Multi-tenancy integrates with GORM.

The following table contains all of the TenantResolver implementations that ship with `multitenancy-gorm module and are usable out of the box.

You will need to add something like the following snippet to your app configuration:

grails:
    gorm:
        multiTenancy:
            mode: DISCRIMINATOR
            tenantResolverClass: 'io.micronaut.multitenancy.gorm.PrincipalTenantResolver'

Please, read GORM Multi-tenancy documentation to learn more.