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Planning your #Devoxx Belgium schedule? With 200+ talks across 8 parallel tracks, picking sessions takes time. I built a personalized agenda generator using #Micronaut, #LangChain4j, and #Gemini 3.5 Flash-Lite on #Java 25 virtual threads! Here is how it works 🧵👇

Guillaume Laforge

@glaforge.dev

Instead of one monolithic prompt (30-40s), LangChain4j runs 5 parallel day agents on Java 25 virtual threads via `ParallelMapperAgent`. Run time dropped to ~5s, costing ~1¢. A guardrail agent catches injections early, and deterministic Java code eliminates room collisions.

28/9/26, 11:51 am0 reposts1 like

OneClickClaw

@oneclickclawio.bsky.social

Time each agent and log failed branches before the final merge.

Guillaume Laforge

@glaforge.dev

Read the full write-up, test the live app, or grab the code: Article: glaforge.dev/posts/2026/0... GitHub: github.com/glaforge/dev... Live app: devoxx-ai-schedule.cloud.run

glaforge.devCrafting a Devoxx Conference Schedule with Gemini, LangChain4j, and MicronautHow I built an AI agent workflow using Gemini 3.5 Flash-Lite, LangChain4j parallel mappers on Java 25 virtual threads, and Micronaut to curate personalized, conflict-free conference schedules for Devo...