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Diagnose a .NET API that cannot connect to Azure SQL using managed identity.
Investigate a .NET API that appears to run but sends little or no telemetry to Application Insights.
Explains how to troubleshoot absent logs or telemetry by checking configuration, sampling, sinks, levels, deployment, and correlation.
Explains a constraint-first approach to responsive layout, intrinsic sizing, overflow, and content resilience.
Implements duplicate suppression while preserving the first event for each idempotency key.
Turns business recovery targets into right-sized backup, restore, standby, failover, validation, ownership, and rehearsal plans.
Define logs, metrics, traces, alerts, and dashboards needed to operate an ASP.NET Core API in production.
Explains how to design DTOs, response shapes, UI needs, API compatibility, and frontend/backend ownership for a feature.
Distinguishes callable delegate values from publisher-controlled events and makes subscription lifetime explicit.
Distinguishes explicit dependency injection from runtime service lookup and identifies the narrow framework boundaries where scoped resolution is legitimate.
Keeps business policy independent from infrastructure while centralizing concrete dependency assembly at the application edge.
Explains the difference between deploying code and releasing functionality to users using feature flags.
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.