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Frameworks & web · #vertx
Learn how to turn the Vert.x event bus into a distributed bus using Hazelcast, see a concrete two‑node example, and weigh the trade‑offs before you add clustering to your reactive app.
Learn how to use Vert.x’s Circuit Breaker to protect async services, configure timeouts, fallbacks, and monitor state via the event bus. Includes a concrete example and clustering caveats.
When Vert.x nodes silently fall back to a local event bus, the culprit is often a Hazelcast clustering issue. This guide walks through common causes, ordered checks, fixes, and escalation steps with real‑world examples.
Vert.x gives you two supported places to run blocking code: executeBlocking and worker verticles. How they differ, when each fits, and how to verify the thread handoff.
Build a Vert.x Web POST endpoint that parses JSON with BodyHandler, validates payloads safely, returns structured errors, and keeps blocking work off the event loop.
Step‑by‑step guide to start a Vert.x 4.x clustered event bus, register a custom codec, and use timed request‑response messaging with failure handling.
Vert.x Event Bus cluster failures often stem from discovery mismatches, network issues, or codec conflicts. Follow this diagnostic guide to identify and resolve common problems with Hazelcast 5.x.
Learn how Vert.x Event Bus request‑response replaces blocking REST calls with a fully non‑blocking, message‑driven pattern. Get a concrete Java example, trade‑off analysis, and actionable next steps to scale microservices.
Learn how to use Vert.x Event Bus request‑response for non‑blocking service‑to‑service calls, with a working Java example, limits, and common pitfalls.
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