Noisy neighbours: one tenant must never ruin it for everyone
How one legitimate export took 500 tenants down, the six resources a tenant can exhaust, layered defences from gateway to infrastructure, token buckets and a shared Redis limiter, tiered quotas, query guards, per-tenant pools, fair scheduling, and lessons from Salesforce, Stripe and AWS.
01 · Previously
W09 · DAY 02 · Noisy Neighbor Prevention
Separate data. Shared everything else.
Previously: data isolation
Previously, on Day 1, you isolated tenant data: the isolation spectrum, tenant context from auth, and row-level security, so Tenant A can never read Tenant B's rows.
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