Level 5: AI / LLM systems · L5.4 LLM gateways, caching & cost control
Semantic caching
Decide when caching by meaning is safe.
11 min · Pro
What you take away
- Semantic caching reuses a stored answer when a new question is close enough in embedding space, so unlike prompt caching it can be wrong.
And 3 more inside the class, in Pro.
How the class is laid out
- The problem
- The FAQ sheet on the front desk
- The one sentence that separates the two caches
- What it is worth, and what it costs
- Check your understanding