Interview questions
Find a company or topic. Read the sources, then practice.
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Find a company or topic. Read the sources, then practice.
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Showing 1,426–1,450
Companies: OpenAI
Companies: Palantir
Companies: Microsoft
Large command fan-out with durable offline delivery, bounded execution, and honest handling of uncertain outcomes.
Companies: Lyft, Meta
agent-architecture · backpressure · durable-workflows · failure-detection
Companies: OpenAI
Distributed external sorting: global ordering, skewed keys, bounded-memory shuffle and merge, and correct recovery from worker failures.
Companies: Google, Microsoft
batch-processing · data-skew · distributed-shuffle · external-sorting
Sensitive action records need durable transfer, trusted query results, tenant access checks, and long retention.
General practice
access-control · data-retention · durable-delivery · query-completeness
Remote consultations with clinician eligibility, exclusive assignment, visit recovery, and private clinical records.
General practice
access-control · clinician-assignment · data-durability · real-time-communication
Continuously changing rankings: sliding-window expiration, exact distributed top K, viral articles, and share-ID deduplication across delivery and replay.
Companies: Amazon, Bloomberg, LinkedIn, Meta +2
deduplication · distributed-top-k · event-time · hot-keys
Combine travel records across providers without false merges, stale changes, or errors in local dates and times.
General practice
booking-identity · conflicting-source-information · provider-changes · repeated-deliveries
Approximate vector search with metadata filters: search quality, query time, and visibility of recent changes.
General practice
approximate-nearest-neighbors · durability · index-freshness · metadata-filtering
Upload pipeline, transcoding DAG, adaptive bitrate streaming, CDN economics, metadata and view counts.
General practice
async-pipelines · cdn · counters · egress-cost
Video conversion with compatible playback outputs, durable jobs, uneven compute demand, and a fixed compute budget.
General practice
compute-budgets · overload-behavior · playback-correctness · submission-retries
A cloud network service with overlapping addresses, tenant isolation, and safe route and security changes across many hosts.
General practice
configuration-distribution · control-plane · failure-recovery · network-security
A regional VPN service must balance packet capacity, failure recovery, traffic isolation, and secure key changes.
General practice
capacity-planning · control-plane · gateway-failover · key-rotation
Asset identity, vulnerability applicability, disclosure updates, and reliable remediation status across infrastructure changes.
General practice
asset-inventory · data-freshness · incremental-processing · multi-tenancy
Shared video playback with control conflicts, device clock differences, video stalls, and recovery after a disconnect.
General practice
playback-across-device-clocks · repeated-controls-and-uncertain-outcomes · room-recovery · shared-playback-behavior
Location-based weather reads over changing external data: geographic reuse, late observations, forecast versions, and honest freshness during outages.
Companies: Amazon, Chime, HubSpot, Klaviyo +2
caching · data-ingestion · data-versioning · event-time
HTTP attack filters: request interpretation, rapid rule updates, bounded inspection cost, and tenant isolation.
General practice
configuration-safety · http-security · latency · request-parsing
Search across billions of pages with relevant results, fresh content, site access limits, and low query latency.
General practice
page-discovery · page-freshness · relevant-results · response-time
Money movement across a transactional boundary: balanced ledger entries, retry-safe transfers, uncertain bank responses, and reconciliation.
Companies: Capital One, Google, Revolut
double-entry-ledger · idempotency · reconciliation · state-machines
Durable progress across failures, uncertain external effects, long timers, and compensation after cancellation.
General practice
compensation · durable-execution · fault-tolerance · idempotency
Geographic search with date filters, shared home calendars, and reservations that must not overlap.
General practice
geospatial-search · idempotency · interval-conflicts · payments
A retail platform with heavy browse traffic, scarce stock, repeated checkout requests, uncertain payment results, and delayed shipment events.
General practice
multi-item-checkout-correctness · order-status · peak-browse-traffic · repeated-checkout-requests
Campaign spend control across many servers, with daily limits, uneven traffic, and delayed costs.
General practice
budget-pacing · consistency · distributed-counters · idempotency