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title: adam bien's blog | daily.dev
description: Coding agents benefit enormously from Quarkus Dev Mode's live reload and continuous testing features. While a 30-second restart is a minor annoyance for a...
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og:title: adam bien's blog | daily.dev
og:description: Coding agents benefit enormously from Quarkus Dev Mode's live reload and continuous testing features. While a 30-second restart is a minor annoyance for a...
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# adam bien's blog

**[Adam Bien](https://daily.dev/sources/adam-bien)** · 2 min read · 1 upvotes · 0 comments

## Summary

Coding agents benefit enormously from Quarkus Dev Mode's live reload and continuous testing features. While a 30-second restart is a minor annoyance for a human developer hitting it a few times per hour, an agent iterating 200 times would exhaust its entire budget waiting. Quarkus Dev Mode eliminates restarts by reloading on the next HTTP request and automatically re-running tests on code changes, cutting the feedback loop to under a second. For Java CLI apps without Dev Mode, the zb build tool achieves similarly fast cycles.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://adambien.blog/roller/abien/entry/need_for_iteration_speed>

## Questions this post answers

### Why do AI coding agents use Quarkus dev mode instead of restarting the JVM each time?

Quarkus dev mode live-reloads code on the next HTTP request and reruns affected tests automatically via continuous testing, so an agent gets immediate compile, test, and endpoint feedback without rebuilding or restarting. A thirty-second restart that barely bothers a human running it five times an hour consumes an agent's entire iteration budget across hundreds of edit cycles.

_Anyone tuning AI agent workflows around Quarkus can track iteration-speed tips like this on daily.dev._

### How can I speed up build iteration for a Java CLI application that has no dev mode?

Use the zb build tool, which builds Java CLI applications fast enough to keep the edit-test loop as tight as Quarkus dev mode provides for web apps, even without a live-reload dev mode feature. It is offered as a practical alternative for CLI projects that otherwise lack that fast feedback loop.

_Developers hunting for faster Java build loops can follow tool picks like zb on daily.dev._

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---

Tags: [#testing](https://daily.dev/tags/testing), [#ai-agents](https://daily.dev/tags/ai-agents), [#java](https://daily.dev/tags/java), [#quarkus](https://daily.dev/tags/quarkus)

[View this post on daily.dev](https://daily.dev/posts/adam-bien-s-blog-uxuciayu6)

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