Tag: production engineering

4 articles

• LLM Tool Result Caching in Production: Reducing Agent External Call Costs with Idempotency Keys, TTL, and Invalidation Strategies

  A practical guide to caching external tool results for LLM agents, covering idempotent key design, TTL semantics, event-driven invalidation, state isolation, audit replay, and a pre-launch checklist to reduce API costs and latency while avoiding cache pollution and cross-tenant leaks.

  07/07/2026 LLM Agent / Tool Calling / Cache / Production Engineering / Idempotency Key / Cache Invalidation / RAG

• LLM Long Video Understanding in Production: Stabilizing QA Quality with Frame Sampling, Timestamp Indexing, and Clip Replay

  This article covers engineering practices for production-grade long video QA, including frame sampling, shot segmentation, subtitle fusion, timestamp indexing, clip replay, evidence verification, and launch checklists to reduce missed keyframes and temporal ordering errors.

  07/05/2026 LLM / video understanding / multimodal AI / production engineering / RAG / frame sampling / timestamp indexing

• LLM Retrieval Index Update in Production: Using Blue-Green Index and Incremental Backfill to Prevent RAG Quality Regression

  This article explains how to govern RAG retrieval index updates, covering blue-green indexes, dual-write, incremental backfill, alias switching, quality sampling, and rollback strategies to help teams reduce retrieval quality regression risk when documents, embedding models, or chunking rules change.

  07/04/2026 LLM / RAG / Vector Search / Embedding / Production Engineering

• Tool Contract Testing in Production: Governing Function Call Schema Evolution with Contract Cases

  A systematic guide to contract testing for LLM Agent tool calls, covering function schema versioning, compatibility rules, contract case design, replay testing, CI gating, and release checklists to help engineering teams surface schema evolution risks early.

  07/02/2026 LLM Agent / Tool Calling / Contract Testing / Schema Evolution / Production Engineering