We are a group of users focused on expanding the breadth and depth of Groovy and Grails development skills with our members who live and work in the DFW area. Our meetings are on the 1st Wednesday of every month (social & food at 6:30pm, meeting content at 7:00pm) at the NEW Improving office in Plano.

General Announcement

Starting with the June 2017 meeting we will be focusing on introducing new members to Groovy. We will have a series of talks that will bring them up to speed on Groovy, Gradle, Grails and application development. Please bring your friend, neighbor and co-worker, especially if they are familiar with Java, as the ramp-up is very easy.

Multi-tenancy with Grails

01 June 2016Sunny Thandassery


  1. Design approaches – single DB, multi-DB/schema, Tenant discriminator approaches
  2. Landscape – Grails mult-tenant plugins, Hibernate 4 native support, Oracle 12C multi-tenant, etc.
  3. Design considerations
  4. Extending Spring Security for multi-tenancy
  5. URL based tenant identification for user sessions
  6. Tenant specific customizations – UI and biz logic


Sunny Thandassery’s entrepreneurial endeavors always have him looking for solutions with quick returns while maximizing existing investments. This search lead him to the Grails development framework and the Amazon Cloud (AWS) platform for running his companies’ SaaS applications. He has spent the last 5 years focused on these technologies and is always happy to share his insights and expertise. He is the founder of BluSynergy, a provider of billing and payments solutions for SaaS/Cloud companies.