Multi-tenant cache key prefix missing Debugging Lab

Multi-tenant cache key prefix missingCaching & PerformanceHardPreparing workspaceAutosaved

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Incident Dossier

Multi-tenant cache key prefix missing

Two tenants request the same invoice id through the service. Whoever fetches last wins the cache, and the other tenant reads the wrong tenant's invoice.

Initial failing signalTenant id is missing from the cache keyExpected tenant-a receives its own invoice · received tenant-a receives tenant-b's invoice

Progress

1Reproduce the bugRun checks

2Edit the fixOpen

3Pass checksOpen

4Submit fixOpen

Reproduction Steps

Run npm test.
Trace where the cache key is built and what fields it uses.
Compare the fields the cache key uses to the fields the service provides.
Make sure the tenant id is part of the cache key.

Focus Mode

Start

src/service.js

Likely area

src/cache-keys.js
src/cache.js
src/service.js

Progressive hints

Hints reveal broad direction first, then narrow toward the suspect path without showing hidden tests or exact solution code.

TopicCaching & Performance

DifficultyHard

Est. time30 min

Workspacecreating

Explorer

Preparing workspace files…

Evidence Map

Failing signal loaded from challenge API
Workspace files loaded from workspace API
Results rendered only after API run/submit

Autosaved

workspace

Outputread-onlyready$ workspace boot

Workspace booting...