CourseRetrieval-Augmented Generation: The Complete Course · Module 12: Production Engineering · part 87 of 95
Part 87 · Module 12: Production Engineering

Lab: Make Hollin Answers ready for production

75 min read·13 Oct 2026
Module 12 · Lab · About 90 minutes · Needs: lessons 1 to 5 of this module, and the Module 6, 8 and 9 labs (or the cells in Step 1)

What you are building

ONE REQUEST THROUGH SERVICE (HOLLIN/FALLBACK.PY) cache check at hop Modules 6, 8 search, rerank authorise live ACL cascade cheap, strong 1 model answer Module 9 checks 2 partial answer cited passages 3 hand over with reference trace.py: spans, cost | governance.py: audit entry
The lab's service: Hollin's own steps (blue) and earlier modules (grey) feed the model cascade (amber); a passing answer (green) is rung one, then a cited partial answer, then a person, and every request leaves a trace and an audit entry.

The pilot starts on Monday 2 November. Each lesson of this module built its piece in its own notebook, on a stand-in search. This lab moves those pieces into the files the course guide names, on top of the real pipeline: Module 6's search, Module 8's reranker and context assembler, and Module 9's answer contract, imported, not copied. hollin/trace.py records, times and prices every request; hollin/cache.py holds the caches; hollin/governance.py decides who may see what and keeps the audit chain; hollin/fallback.py joins them into one service with a fallback ladder. The model is called in Step 6 only.

The rest of this course is yours to keep

This course is bought on its own, once, and stays readable afterwards, including the parts added to it later.

Buy this course · ₹399See what is inside