Drills

.NETApplication InsightsASP.NET CoreAzure Service BusSQL Server

Design a business workflow state machine

Designs explicit workflow states, allowed transitions, guard rules, audit history, idempotency, and operational repair paths.

System design

Hard

~20 min

Design bulk import preview and validation

Designs a safe admin import flow with upload staging, validation, preview, confirmation, idempotency, and rollback strategy.

.NETApplication InsightsASP.NET CoreAzure Service BusSQL Server

Practice drill

.NETApplication InsightsASP.NET CoreRedisSQL Server

Design content approval and publishing

Designs draft, review, publish, rollback, and audit behavior for content managed by editors and admins.

.NETApplication InsightsASP.NET CoreSQL Server

Design moderation and reporting

Designs user reports, moderation queues, actions, audit history, abuse controls, and appeal-friendly decisions.

.NETApplication InsightsASP.NET CoreAzure Service BusSQL Server

Design notification preferences and digests

Designs user preferences, channel rules, unsubscribe behavior, digest generation, and delivery suppression.

.NETApplication InsightsASP.NET CoreRedisSQL Server

Design real-time live updates

Designs live updates with polling, server-sent events, or WebSockets while preserving authorization, ordering, scale, and fallback behavior.

.NETApplication InsightsASP.NET CoreAzure Service BusElasticsearch+1

Design saved searches and alerts

Designs saved filters, scheduled matching, alert delivery, and freshness trade-offs for search-driven product workflows.

.NETApplication InsightsASP.NET CoreAzure Service BusSQL Server

Design subscription entitlements and access

Designs plan entitlements, provider webhooks, idempotent billing updates, access checks, grace periods, and support overrides.

.NETApplication InsightsASP.NET CoreSQL Server

Design support impersonation

Designs a controlled support impersonation workflow with scoped access, approvals, visible banners, audit trails, and session boundaries.

.NETApplication InsightsASP.NET CoreSQL Server

Design team membership and role changes

Designs membership, role changes, removal, ownership transfer, and permission updates without weakening tenant boundaries.

.NETApplication InsightsASP.NET CoreAzure Service BusSQL Server

Design user invitations and onboarding

Designs an invitation workflow with token security, expiry, membership creation, email delivery, and replay-safe onboarding.

.NETApplication InsightsASP.NET CoreRedisSQL Server

System designEasy~12 min

Design user preferences and settings

Designs a settings service with defaults, validation, scoped preferences, caching, and safe rollout of new settings.