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Explain what ConfigureAwait(false) does, why it mattered historically, and how to reason about it in ASP.NET Core and library code.
Explains EF Core connection resiliency and retries with practical .NET data-access examples and production trade-offs.
Keeps images environment-neutral while handling configuration precedence, secret delivery, rotation, and startup validation safely.
Connects orchestrator requests and limits to .NET GC, thread-pool behavior, throttling, OOM termination, and capacity planning.
Separates ephemeral instance files from durable data and sends logs, uploads, caches, and diagnostics to storage with explicit lifecycle ownership.
Uses immutable image identity, controlled promotion, registry security, and deliberate base-image rebuilding instead of mutable latest tags.
Designs useful local database and cache resources without confusing container lifetime, durable data, bind mounts, parameters, and production secrets.
Explains bind addresses, published ports, internal DNS, service identity, and why localhost changes meaning across container boundaries.
Explains process isolation, shared kernels, image-based deployment, and where containers differ operationally from virtual machines.
Distinguishes request and response media types and designs predictable negotiation, rejection, documentation, and caching behavior.
Sets concurrency from the constrained resource and verifies throughput, latency, and downstream safety instead of maximizing active work.
Explains controlled inputs, uncontrolled inputs, validation, refs, and when each form approach fits.
Compare endpoint styles in real services, including organization, conventions, testing, filters, and OpenAPI behavior.
Explains sampling, high-cardinality labels, retention, cost, and keeping enough signal for incident diagnosis.
Serializes work for the same resource while preserving concurrency across independent keys and managing keyed-lock lifetime safely.
Explains deployment markers, version telemetry, feature-flag state, commit traceability, and incident diagnosis after releases.
Explains browser same-origin enforcement, preflight requests, credentials, middleware behavior, and why CORS is not authorization.
Implements a word-frequency counter with normalization, punctuation handling, and stable ordering.
Decide how to handle CPU-heavy work in an API without damaging request throughput or making the system unreliable.
Applies CQRS proportionally, separating model responsibilities without assuming separate databases, messaging, or event sourcing.
Creates and disposes explicit service scopes for hosted, queued, and parallel work without sharing scoped dependencies across operations.
Explains what belongs in runbooks, how on-call handoff preserves context, and how operational docs stay useful.
Explains database constraints versus application validation with practical .NET data-access examples and production trade-offs.
Distinguishes instants, local calendar values, offsets, and named time zones so APIs and persistence survive daylight-saving and locale boundaries.