WeAreDevelopers Logo WeAreDevelopers
Sign in
For You LIVE
World Congress 2026 Europe • Jul 10, 2026 • Session details

Structured Concurrency in Practice: CoroutineScope vs StructuredTaskScope

Filip Egeric

Does Java's StructuredTaskScope handle blocking IO better than Kotlin coroutines? Compare both concurrency models directly in a practical Spring Boot demonstration.

Pause
Mute Enter Fullscreen
#1 about 2 min

Understanding concurrency and parallelism with visual examples

Comparing task execution strategies using a pit stop analogy to differentiate concurrency from parallelism.

#2 about 1 min

Core properties of structured concurrency paradigms

Ensuring safe asynchronous execution by bounding task lifetimes to a parent scope and propagating errors efficiently.

#3 about 4 min

Exploring a blocking Spring Boot application demo

Analyzing a standard Spring Web MVC application that retrieves data using synchronous database and service calls.

#4 about 3 min

Implementing asynchronous calls using Kotlin coroutines

Refactoring a blocking endpoint to fetch independent data sources concurrently using standard Kotlin asynchronous builders.

#5 about 2 min

Resolving reactive stream errors in blocking applications

Bridging suspending coroutines with blocking Spring endpoints by switching to a standard blocking execution context.

#6 about 2 min

Offloading blocking operations to a shared thread pool

Accelerating application speed by explicitly assigning dedicated coroutine dispatchers for execution of input and output tasks.

#7 about 2 min

Simulating failures and handling slow error propagation

Identifying un-cancellable blocking routines that prevent asynchronous parent scopes from handling downstream failures immediately.

#8 about 2 min

Making blocking code cancellable with run-interruptible wrappers

Enabling immediate failure propagation by explicitly bridging synchronous blocking functions into the active coroutine cancellation hierarchy.

#9 about 1 min

Introduction to the native Java structured task scope API

Exploring a native Java enhancement proposal that offers structured concurrency concepts directly embedded into the language platform.

#10 about 4 min

Refactoring concurrent operations using the structured task scope

Simplifying grouped asynchronous service calls by utilizing the new Java concurrency API powered by lightweight virtual threads.

#11 about 1 min

Creating Kotlin ergonomic wrappers for native Java APIs

Solving type inference mismatch issues between generic callables and runnables by building a lightweight usability wrapper.

#12 about 4 min

Comparing CoroutineScope and StructuredTaskScope architectural trade-offs

Choosing the right concurrent execution model based on the application stack, blocking constraints, and deployment platform versions.

Matching moments

5:18 min

Executing parallel tasks concurrently with structured task scopes

Christian Woerz · LIVE

3:47 min

Approaches to non-blocking software before Project Loom

Jan Weinschenker Jan Weinschenker · World Congress 2024

6:35 min

Managing thread lifecycles using structured task scopes

David Vlijmincx · LIVE

3:12 min

Solving thread blocking with reactive frameworks and Kotlin

Jan Weinschenker Jan Weinschenker · World Congress 2024

3:29 min

Handling asynchronous operations with native Kotlin coroutines

Georg Dresler Georg Dresler · World Congress 2026 Europe

1:27 min

Introduction to Loom and its impact on concurrency

Ivan Šarić Ivan Šarić · Europe 2026 Virtual

More from World Congress 2026 Europe

Building the Nervous System of AI - Michael Kagan (NVIDIA) thumbnail
29:17
about 2 months ago

Building the Nervous System of AI - Michael Kagan (NVIDIA)

Michael Kagan, Sead Ahmetović

Five Things in Tech that Matter Now - WeAreDevelopers World Congress 2026 Closing Keynote thumbnail
19:41
about 2 months ago

Five Things in Tech that Matter Now - WeAreDevelopers World Congress 2026 Closing Keynote

Christian Heilmann

The Sound of Your Secrets: Teaching Your Model to Spy, So You Can Learn to Defend thumbnail
32:06
about 2 months ago

The Sound of Your Secrets: Teaching Your Model to Spy, So You Can Learn to Defend

David vonThenen

Super scaling for the Super Bowl: How to survive 30 million users hitting your backend in 30 minutes thumbnail
35:13
about 2 months ago

Super scaling for the Super Bowl: How to survive 30 million users hitting your backend in 30 minutes

Irina Branovic

Running Secure Life Science Research at Scale using Hybrid GPU HPC and Kubernetes 🧬 thumbnail
24:23
about 2 months ago

Running Secure Life Science Research at Scale using Hybrid GPU HPC and Kubernetes 🧬

Jeremy Murray

Angstfreude - AI and Corporate Culture - The Thrill and the Threat thumbnail
30:26
about 2 months ago

Angstfreude - AI and Corporate Culture - The Thrill and the Threat

Axel Ebert, Karin Krobath

Upcoming sessions on this topic

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

Suren Konathala
Open session

World Congress 2026 North America

September 25, 2026 · 11:00–11:30

Outdoor Stage

Loop Engineering: Designing and Observing the Loops That Run Your Agents With Opik

Abigail Morgan

AI Developer Advocate at Comet

Abigail Morgan
Open session

World Congress 2026 North America

September 25, 2026 · 09:00–09:30

Stage 3

Your Thread Pool Is Lying to You — Sizing Concurrency from Rate Limits and Latency, Not Guesswork

Ratul Ghosh, Sesha Chennupati

Ratul Ghosh
Sesha Chennupati
Open session

World Congress 2026 North America

September 24, 2026 · 14:10–14:40

Stage 9

One Repo, One Strategy: Scalable Full-Stack Testing in a Monorepo World

Bartosz Leczycki, Paweł Matynia

Bartosz Leczycki
Paweł Matynia
Open session

World Congress 2026 North America

September 24, 2026 · 17:30–18:00

Stage 7

Full Stack with Flutter - are we there yet?

Nemanja Stošić

Senior Flutter Developer

Nemanja Stošić
Open session

World Congress 2026 North America

September 24, 2026 · 16:50–17:20

Stage 9

From Guesswork to Governance: Data Contracts Bring API Discipline to Apache Kafka

Sandon Jacobs

Senior Developer Advocate at IBM

Sandon Jacobs

Related videos

Introduction and pitfalls of Java's new concurrency model thumbnail
52:51
LIVE • almost 3 years ago

Introduction and pitfalls of Java's new concurrency model

David Vlijmincx

Java's Project Loom & Co - the end for reactive programming? thumbnail
23:58
World Congress 2024 • about 2 years ago

Java's Project Loom & Co - the end for reactive programming?

Jan Weinschenker

Java 21: The Revolution of Virtual Threads - A Deep Dive thumbnail
55:30
LIVE • over 2 years ago

Java 21: The Revolution of Virtual Threads - A Deep Dive

Christian Woerz

Beyond Loom: Practical Patterns for Virtual Threads, Structured Concurrency and Reactive Interop thumbnail
28:47
Europe 2026 Virtual • 2 months ago

Beyond Loom: Practical Patterns for Virtual Threads, Structured Concurrency and Reactive Interop

Ivan Šarić

Route from Java to Kotlin thumbnail
57:09
LIVE • almost 4 years ago

Route from Java to Kotlin

Christian Woerz

Moving from Java to Kotlin thumbnail
28:22
World Congress 2022 • about 4 years ago

Moving from Java to Kotlin

Urs Peter

Related articles

From learning to earning

Jobs that call for the skills explored in this talk.