Your B2B SaaS has five thousand tenants. Pooled tables, schema per tenant, or database per tenant: choose and defend.

Every candidate lists the three isolation models. The offer-worthy answer prices them per tenant, does the migration fan-out arithmetic, and lands on a hybrid with reversal conditions.

Updated Sep 2026 · Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.

Every candidate lists the three isolation models. The offer-worthy answer prices them per tenant, does the migration fan-out arithmetic, and lands on a hybrid with reversal conditions.

20 answers per topic instead of 10, and your progress kept · no cardor unlock all 390 remaining answers · ₹2,000 / $25

UP NEXT ON YOUR JOURNEY

Next in this trackDesign config distribution to fifty thousand VMs: versioned bundles, staged rollouts, and rollback that actually works.Next in this trackDesign video delivery for a streaming app: adaptive bitrate, CDN offload, and the metrics you watch when playback stalls.Next in this trackForty teams publish APIs through your gateway. Design the platform: central auth, versioning policy, and golden paths.

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