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Scaling Java-Based Real-Time Systems: The Hidden Tradeoffs of Event-Driven Design

Event-driven architecture promises scalability, but in Java-based real-time systems the tradeoffs only surface in production. Drawing on a Java/Kafka contact center platform handling 80k BHCC across 10k agents, this article details where the design breaks down—state management, partition limits, deduplication, JVM tuning, cascading consumer failures—and the Redis-backed patterns that fixed each.

Sagar Deepak Joshi
on Jun 30, 2026
Development

The Technology Adoption Curve, Twenty Years On

Today, June 8th, InfoQ celebrates 20 years. This is not a comprehensive history, but a deliberately selective look at the technologies and practices InfoQ identified early, where they sit on the adoption curve in 2026, and how that curve may evolve over the next five to ten years.

Renato Losio Dio Synodinos
on Jun 08, 2026
Web Development

The DPoP Storage Paradox: Why Browser-Based Proof-of-Possession Remains an Unsolved Problem

DPoP closes a real gap in OAuth 2.0. Sender-constrained tokens are a meaningful upgrade over bearer tokens for any client that can implement them. But RFC 9449's silence on browser key storage creates the need for an architectural decision that each team must confront deliberately — there is no safe default that works everywhere.

Dhruv Agnihotri
on Apr 30, 2026
Java

The Spring Team on Spring Framework 7 and Spring Boot 4

InfoQ recently spoke with key members of the Spring team about the significant architectural and functional advancements in Spring Framework 7 and Spring Boot 4. This conversation explores the strategic shift toward core resilience by integrating features such as retry and concurrency throttling directly into the framework, alongside the performance benefits of modularizing auto-configurations.

Karsten Silz Phil Webb Sam Brannen Rossen Stoyanchev Mark Pollack Martin Lippert Michael Minella
on Apr 13, 2026
Java

Beyond RAG: Architecting Context-Aware AI Systems with Spring Boot

This article introduces Context-Augmented Generation (CAG) as an architectural refinement of RAG for enterprise systems. It shows how a Spring Boot-based context manager can incorporate user identity, session state, and policy constraints into AI workflows, improving traceability, consistency, and governance without altering existing retrievers or LLM infrastructure.

Syed Danish Ali
on Apr 02, 2026
Cloud

Building Streaming Infrastructure That Scales: Because Viewers Won't Wait until Tomorrow

In streaming, the challenge is immediate: customers are watching TV right now, not planning to watch it tomorrow. When systems fail during prime time, there is no recovery window; viewers leave and may not return. One and a half years ago, at ProSiebenSat.1 Media SE, we faced the challenge of scaling streaming applications for international users.

Daniele Frasca
on Dec 23, 2025
Architecture & Design

Understanding and Mitigating High Energy Consumption in Microservices

Microservices often consume more energy than monoliths due to distributed overhead. Architects can make design decisions that improve sustainability. This article covers several techniques, such as defining clear service boundaries, optimizing service granularity, using energy-efficient deployment regions, and consolidating workloads.

Supriya Lal
on Jul 28, 2025
Cloud

Engineering Principles for Building a Successful Cloud-Prem Solution

Discover how Cloud-Prem solutions combine cloud efficiency with on-premise control, meeting data sovereignty and compliance demands while optimizing operational costs and enhancing customer security.

Satyam Dhar
on Jun 26, 2025
Architecture & Design

Using Traffic Mirroring to Debug and Test Microservices in Production-Like Environments

Traffic mirroring has evolved from a network security tool to a robust method for debugging and testing microservices using real-world data. By safely duplicating production traffic to a shadow environment, teams can replicate elusive bugs, profile performance under actual load, validate new features, and detect regressions, ensuring that production remains isolated and user experiences intact.

Apoorv Mittal
on Jun 09, 2025
Java

Mocking gRPC in Spring Boot Microservice Integration Tests with WireMock

Mocking gRPC services allows you to validate gRPC integration code during your tests while avoiding common pitfalls such as unreliable sandboxes, version mismatches, and complex test data setup requirements. Learn how to use WireMock’s Spring Boot integration to mock gRPC services.

Tom Akehurst
on May 23, 2025
Architecture & Design

Applying Flow Metrics to Design Resilient Microservices

Software design with resilience is an acknowledgement to the reality that everything fails. We put metrics in place to help us detect and resolve such problems and failures. Flow metrics, commonly used to measure how well teams deliver software, can be used to measure and improve system resilience.

Mourjo Sen
on Mar 26, 2025
Java

Reactive Real-Time Notifications with SSE, Spring Boot, and Redis Pub/Sub

Explore the power of reactive programming for building scalable real-time notification systems. Using Spring Boot Reactive and Spring WebFlux, leverage non-blocking operations to handle high-volume, asynchronous data flows efficiently. Discover how Redis Pub/Sub enables event-driven messaging and how the SSE protocol provides persistent connections for instant client updates without polling.

Matteo Rossi
on Nov 21, 2024

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