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Introduces API versions only for unavoidable breaks, with explicit routing, versioned documentation, migration support, telemetry, deprecation, and removal criteria.
Designs immutable audit records for sensitive administrative changes with useful before/after context and safe retention.
Explains how EF Core SaveChanges, transactions, and an outbox keep database changes and messages consistent.
Designs a checkout or order creation flow that survives client retries without duplicate orders, payments, or messages.
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 an external partner API with authentication, versioning, rate limits, idempotency, documentation, and compatibility.
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.
Designs a multi-service business workflow using local transactions, durable progress, idempotency, retries, and domain-specific compensation.
Designs a file workflow with metadata, durable storage, validation, access control, scanning, and safe downloads.
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.
Designs a safe admin import flow with upload staging, validation, preview, confirmation, idempotency, and rollback strategy.
Chooses response cache directives for public, private, sensitive, and revalidated API data without leaking user-specific content.
Explains cache-key scope for tenant, user, role, locale, filters, response version, and security-sensitive reads.
Designs comments with permissions, threading, mentions, notifications, editing history, and moderation concerns.
Designs draft, review, publish, rollback, and audit behavior for content managed by editors and admins.
Designs a sharding strategy with a stable key, balanced load, routing, resharding, cross-shard limits, and operational ownership.
Designs deletion, retention, soft delete, hard delete, backups, audit records, and asynchronous cleanup across related data.
Explains how client-side validation, server-side validation, DTOs, domain rules, and user feedback work together.