IBM Z Day on Nov. 21: Discover the ideal environment for modern, mission-critical workloads. Learn more

Meetup with Vlad Mihalcea and Daniel Voican


October 17, 2019

For October, we prepared another special surprise for the developers! We are really happy (and also quite a bit proud and excited 😊) to welcome two amazing speakers: Vlad Mihalcea (Java Champion, Oracle Developer Champion and CEO of Hypersistence) and Daniel Voican (Senior Solution Architect @ IBM and Open Group Master Architect)! They will help us to bring an (even more) exciting program to the IBM Developer Romania meetup scene. Our goal is to broaden the topics of the meetups, so let’s look together on 17 October at Microservices and at Java Persistence and Hibernate tips.

Our agenda:
18.00 → 18:45 Doors open, food, drinks, networking
18:45 → 19:30 Talk 1 – Migrating to microservices based architectures
19:30 → 20:00 Pizza time powered by IBM Romania
20:00 → 21:00 Talk 2 – 18 Java Persistence and Hibernate tips that can boost your application performance
20:15 → ∞ Networking

Talk 1 – Migrating to microservices based architectures
Speaker: Daniel Voican, Senior Solution Architect @ IBM Romania
The presentation provides a description of the typical drivers for migrating to a microservices based architecture, usual pitfalls, implementation approaches, synergy with DevOps, major patterns, everything ending with a case study to illustrate the concepts with a real-word example.

Talk 2 – 18 Java Persistence and Hibernate tips that can boost your application performance
Speaker: Vlad Mihalcea, Java Champion & CEO of Hypersistence
JPA is a very popular Java data access technology and knowing its inner-workings can make the difference between a high-performance enterprise application and one that barely crawls. Your application users are going to thank you for applying these tips, that’s for sure. Every Java developer that must write data access code will benefit from these high-performance tips Vlad is going to give in this presentation. From connection acquisition to handling literals, IN query statement caching, batching rewrite, and JPA streaming gotchas, this presentation will surely help you optimize the performance of your application.

Our speakers:
Daniel Voican is an IBM Certified IT Architect and an Open Group Master Architect in IT Architecture with almost 25 years of experience in the IT, Banking and Telecom industries. As a member of the IBM CEE Architect Board, he is a regular reviewer and approver of certification application packages from Architects. In the last 10 years, he has delivered multiple workshops and participated as a speaker to various conferences (including Oracle Global Accelerate Program Office Conference in CA, USA), sharing with other his knowledge and guiding architects across the world.

Vlad Mihalcea is a Java Champion, CEO of Hypersistence and a Hibernate Developer Advocate. He is passionate about enterprise systems, data access frameworks, and database systems. He wrote hundreds articles about Hibernate on his blog (, and he has a gold badge for Hibernate, JPA and Java tags on StackOverflow. He’s also the author of the book “High-Performance Java Persistence”, one of the best-selling Java books on Amazon.

Join us for this opportunity, you will enjoy it! We look forward to seeing you there!

Şos. Orhideelor 15D Building A, The Bridge, 5th floor, Bucharest, 060071, Romania