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Aporeon

Technical interview practice, from one developer to another.

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Distributed Caching & Redis

Redis in Production

Redis connections, serialization, stampedes, outages, locks, session state, pub/sub, and production failure modes.

7 drillsPractice one at a timeOrdered pathConcept questionComparison question

Recommended start

Redis Connections

Explains why Redis connections are reused, how timeouts protect API threads, and how to diagnose client-side Redis pressure.

Medium~7 minStep 1 of 7

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1Redis ConnectionsRecommended startExplains why Redis connections are reused, how timeouts protect API threads, and how to diagnose client-side Redis pressure.Concept questionMedium~7 min.NETASP.NET CoreAzurePractice 2SerializationExplains cached value serialization, schema versioning, deploy compatibility, and safe handling of old payloads.Concept questionMedium~7 min.NETASP.NET CoreRedisPractice 3StampedeExplains what happens when a hot key expires and how request coalescing, TTL jitter, background refresh, and stale serving help.Concept questionMedium~7 min.NETASP.NET CoreRedisPractice 4Redis OutageExplains how an API behaves when Redis is unavailable and which cache usages can safely fall back.Concept questionMedium~7 min.NETASP.NET CoreAzurePractice 5Locks and LeasesExplains the risks of Redis-based distributed locks and when database constraints, queues, or idempotency are safer.Concept questionHard~9 min.NETASP.NET CoreRedisPractice 6Session StateExplains session state choices for scaled-out ASP.NET Core APIs and when Redis-backed state is appropriate.Concept questionMedium~7 min.NETASP.NET CoreAzurePractice 7Pub/Sub vs QueueCompares Redis pub/sub with durable queues when broadcasting cache invalidation or refresh events.Comparison questionMedium~7 min.NETASP.NET CoreAzure Service BusPractice

Practice order

7 drillsOne at a time

1Redis ConnectionsUp next / Medium / ~7 min
2SerializationMedium / ~7 min
3StampedeMedium / ~7 min
4Redis OutageMedium / ~7 min
5Locks and LeasesHard / ~9 min
6Session StateMedium / ~7 min
7Pub/Sub vs QueueMedium / ~7 min