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Your Cache Key Forgot the Tenant

The key is built from the resource id and nothing else, so invoice 42 is one entry for the entire platform. Tenant A misses and the response gets stored. Tenant B sends the same URL a second later, hits that key, and reads another company's invoice out of your cache.

This Short draws the leak moving: one shared key, two tenants, a cross tenant hit, and every authorization check you wrote still passing because the cache answered before any of them ran. Then the fix: a fully qualified key carryin