~/talk

Next-Level Features of LangChain4j for Production-Ready AI Applications

name:Lize Raes
github:LizeRaes
slides:none on file

LangChain4j 1.0 adds production features: AI services let Java interfaces return real POJOs (demo datetime extractor parsed “noon 3 days before Valentine’s Day 2025” to 2025-02-11 12:00), tool wrapping calls AlphaFold/AlphaProteo, and a drug‑discovery pipeline that mostly runs end‑to‑end (minor NPE glitch). Advanced RAG uses query transformers, a query router to embedding, Neo4j, web and SQL retrievers plus a reranker, MCP servers for GitHub/Drive/Playwright, guardrails (block bioweapon risk >0.7), OpenTelemetry metrics, and semantic AI scoring with 0.8 similarity. Cost example: ~$0.80/month in demo runs.

AI-written summary · about

  1. 0:00Introduction
  2. 0:42LangChain4j basics
  3. 3:35AI services with Java
  4. 7:31Production AI features
  5. 8:13General AI levels
  6. 11:24State machines in AI
  7. 15:17Advanced RAG
  8. 20:08Multimodal architectures
  9. 21:10MCP servers
  10. 21:52Audio integration
  11. 24:01Drug discovery demo
  12. 28:14Production considerations
  13. 29:19Observability in LangChain4j
  14. 29:41Semantic testing
  15. 32:08Roadmap
  16. 33:13Q&A
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