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Frameworks & web · #vertx
Learn how to enable Vert.x Event Bus clustering with Hazelcast, run a simple chat service across nodes, and understand the trade‑offs involved.
Running Vert.x handlers on virtual threads lets you write blocking‑style code (e.g., JDBC) without blocking the event loop. This guide shows how to deploy a virtual‑thread verticle, use await‑style APIs, and highlights limits and mistakes to avoid.
Learn how Vert.x’s request‑response pattern simplifies service communication, see a runnable example, and understand the trade‑offs of timeout handling and clustering.
Practical patterns for Vert.x Event Bus clustering with Hazelcast: message ordering guarantees, serialization contracts, split-brain protection, and why the clustered Event Bus is a coordination layer — not a message broker replacement.
Learn how to set up a Vert.x clustered Event Bus, register custom codecs, enforce security headers, and monitor cluster health for reliable inter‑service communication.
A decision guide to Vert.x Event Bus delivery patterns — send, publish, and request — with a comparison table, backpressure and clustering trade-offs, and a runnable two-verticle validation example.
Learn how to register a custom MessageCodec in Vert.x Event Bus to send domain objects without JSON overhead, with a full example and pitfalls to avoid.
Learn how to spot Vert.x BlockedThreadChecker warnings, tell event‑loop from worker blocks, diagnose the cause, apply fixes, and know when to escalate.
Learn how to use the Vert.x Event Bus request-response pattern to decouple services, maintain non-blocking performance, and prepare your application for clustering.
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