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Designs an async export flow for large reports without blocking API requests or exhausting database and memory resources.
Designs dashboard APIs with precomputed metrics, freshness rules, query cost control, and drill-down support.
Designs explicit workflow states, allowed transitions, guard rules, audit history, idempotency, and operational repair paths.
Design API error handling across validation errors, conflicts, auth failures, not-found responses, and unexpected exceptions.
Designs feature flag storage, targeting, safe defaults, auditability, and rollout observability for backend behavior.
Explains batching, tracking control, idempotency, validation, and operational safety for large EF Core imports.
Explains alert design based on user-impact symptoms, SLOs, burn rate, thresholds, and avoiding noisy cause-only alerts.
Explains useful message metadata for tracing, idempotency, ownership, versioning, and support diagnostics.
Designs tenant isolation across API, data, cache, background jobs, search, and admin access.
Designs an activity feed with event capture, fan-out strategy, pagination, privacy, and read performance.
Introduces API versions only for unavoidable breaks, with explicit routing, versioned documentation, migration support, telemetry, deprecation, and removal criteria.
Explains how EF Core SaveChanges, transactions, and an outbox keep database changes and messages consistent.
Makes POST retries return one durable business outcome by combining scoped keys, request identity, atomic ownership, response replay, and reconciliation.
Designs email, in-app, and push-style notification delivery with preferences, retries, and idempotent side effects.
Designs realistic load, stress, spike, and soak tests from workload assumptions and SLOs while correlating client results with server bottlenecks.
Designs synchronization with an external system using cursors, retries, idempotency, rate limits, and reconciliation.
Explains reset-token generation, hashing, expiration, generic responses, session revocation, and abuse controls.
Explains soft delete in EF Core APIs with practical .NET data-access examples and production trade-offs.
Designs a multi-service business workflow using local transactions, durable progress, idempotency, retries, and domain-specific compensation.
Explains password verification, hashing, throttling, generic errors, lockout, and safe login telemetry.
Explains dashboard panels that help an API owner see user impact, dependency health, releases, and current incidents.
Places contract, use-case, domain, authorization, and database validation at the boundaries that can enforce each rule consistently.
Designs authenticated, replay-resistant webhook intake with durable acknowledgement, idempotent asynchronous processing, ordering policy, and reconciliation.
Chooses response cache directives for public, private, sensitive, and revalidated API data without leaking user-specific content.