Design multi-tenant isolation for an agent platform: prompts, vector stores, caches, and evals
Serving 50 enterprise customers off one platform means four leak surfaces most designs miss, including the semantic cache and the eval set. A tier-by-tier isolation model with the noisy-neighbor math.
Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
Serving 50 enterprise customers off one platform means four leak surfaces most designs miss, including the semantic cache and the eval set. A tier-by-tier isolation model with the noisy-neighbor math.
Lead with where the obvious approach breaks, because that is the judgment they are screening for — most candidates jump straight to the happy path and lose the room.
Then walk the failure back through the pipeline in order, naming the one metric the customer's exec sponsor actually cares about before you propose the fix.
