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WeAreDevelopers LIVE • Apr 18, 2023

Hibernate: How to keep calm

Philipp Frauenthaler , Gregor Lucny

Stop fighting your Java data layer. Master Hibernate entity lifecycles, eliminate N+1 query bottlenecks, and scale massive datasets without exhausting heap space.

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#1 about 4 min

Setting up domain models and database access challenges

A sample user domain model illustrates the complexity of managing relational data with traditional database drivers.

#2 about 3 min

Core capabilities and motivations for adopting object-relational mapping

Mapping tools automate schema generation, type handling, and relational hierarchies while maintaining broad database independence.

#3 about 2 min

Mapping basic entity properties to database tables

Annotating classes configures underlying tables, constraint validation, and identity generation algorithms.

#4 about 2 min

Navigating the transient, managed, and detached entity lifecycles

Understanding when an object transitions between synchronization contexts dictates when changes automatically propagate to the database.

#5 about 2 min

Reducing database roundtrips with level one caching

Transaction-scoped caching prevents duplicate queries for previously loaded entities during active sessions.

#6 about 4 min

Abstracting data access layers using common framework repositories

Repository interfaces automate query compilation based on method naming conventions and manage transactional boundaries.

#7 about 4 min

Synchronizing domain classes with automated database schema migrations

Change set libraries automatically reconcile compiled application models with current database configurations at startup.

#8 about 3 min

Standardizing entity identifiers across different environment stages

Client-assigned universal identifiers resolve limitations inherent to auto-incrementing database columns during environment data cloning.

#9 about 4 min

Defining entity equality accurately within collections and sets

Evaluating solely the underlying identity token prevents unexpected lazy loading triggers when persisting objects in hashed collections.

#10 about 5 min

Resolving recursive entity loading problems using joint fetches

Logging execution frequencies reveals massive implicit queries which can be consolidated using specific cross-join commands.

#11 about 4 min

Preventing memory exhaustion by streaming large entity datasets

Paginating query streams and detaching evaluated instances immediately liberates garbage collection during massive transactions.

#12 about 4 min

Protecting external API calls with transaction synchronization mechanisms

Registering custom compensations guarantees that dependent services revert accurately if asynchronous network interactions unexpectedly fail.

#13 about 2 min

Publishing state alterations automatically through lifecycle event hooks

Binding custom global listeners routes model updates directly to messaging brokers without duplicating logic schemas.

#14 about 3 min

Balancing framework encapsulation against relational data querying capabilities

Employing framework abstractions requires careful diagnostic auditing to prevent severe scalability penalties in production servers.

#15 about 7 min

Navigating early software engineering roles and team structures

Building initial foundational experience requires hands-on troubleshooting exposure before transitioning toward broad structural architecture functions.

#16 about 3 min

Transitioning from adjacent functions into software engineering roles

Demonstrating self-guided side projects proves aptitude and capability specifically when migrating from auxiliary operational positions.

#17 about 3 min

Implementing hybrid telecommuting arrangements within technical project cycles

Establishing core in-office coordination schedules preserves agile synchronous collaboration while maintaining distributed lifestyle flexibilities.

#18 about 2 min

Avoiding underlying collection conflicts during batch association fetching

Sequentially mapping diverse nested relationships prevents severe internal persistence framework crashes when mapping redundant structures.

Matching moments

5:00 min

Simplifying database interactions with Hibernate Panache

Alex Soto Alex Soto · World Congress 2022

6:13 min

Addressing framework compatibility and overall language evolution

Ron Veen Ron Veen · World Congress 2022

4:10 min

Creating database transactions with Hibernate ORM and Panache

Daniel Oh Daniel Oh · World Congress 2025

5:13 min

The object-relational impedance mismatch in standard database programming

Markus Kett Markus Kett · World Congress 2022

3:01 min

Modernizing EJBs and evaluating future Java technologies

Ivar Grimstad Ivar Grimstad · World Congress 2025

2:36 min

Modern application stacks and real-time data requirements

Tim Faulkes · LIVE

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World Congress 2026 North America

September 24, 2026 · 12:50–13:20

Stage 3

Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases

Wei Hu

Senior Vice President of Research and Development

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Open session

World Congress 2026 North America

September 25, 2026 · 16:10–16:40

Stage 6

Beyond SQL Generation: How to Teach Agents What Your Database Actually Means

Kris Jenkins

Host / Developer Voices

Kris Jenkins
Open session

World Congress 2026 North America

September 25, 2026 · 14:50–15:20

Stage 6

Look What Java Can Do Now: Live-Coding a GenAI MCP Server with the JAQ Stack

Suren Konathala

Senior Engineering Leader, Marketing & AdTech, AI GTM & Digital Experience Platforms, Java x AI

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Open session

World Congress 2026 North America

September 25, 2026 · 10:20–10:50

Stage 2

API = Some REST and HTTP, right? RIGHT?!

Rustam Mehmandarov

Passionate computer scientist

Rustam Mehmandarov
Open session

World Congress 2026 North America

September 25, 2026 · 16:00–16:10

Outdoor Stage

public void saveMoney(AI): The Developer's Guide to Unit Economics

Hrushikesh Pokala

Senior Software Engineer Lead at Equifax

Hrushikesh Pokala
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Phani Pendurthi

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