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2948 questions of the kind that actually get asked — in interviews, in architecture review boards, and by the person who has to run the thing at 3 AM. Every answer states the trade-off rather than the slogan, and says when the obvious choice is the wrong one.

All areas2948 Architecture Fundamentals91 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking96 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering100 Security Architecture105 Cost Architecture & FinOps102 Business Architecture103 Architecture Communication102 Enterprise Architecture100 Legacy Modernization102 AI-Era Architecture106 Software Architecture & Engineering93 Architecture Patterns94 Architecture Decision-Making101 The Architect's Meta-Skills102 Delivery & Release Engineering103 Platform Engineering & Developer Experience102 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data103 Data Governance & Semantics91 Frontend & Experience Architecture101 Edge, Mobile & IoT98 Regulatory & Data Protection Architecture99 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

7 questions in Caching Strategies.

  1. Caching Strategies advanced

    A discussion platform has a handful of extremely popular threads receiving most reads and writes, and individual cache nodes become bottlenecks. How should hot-key detection, caching, coalescing, partitioning and asynchronous writes combine?

    3 min answer cachinghot-keyscoalescingreddit
  2. Caching Strategies advanced

    A popular cache key expires at peak. A thousand concurrent requests miss and hit the database simultaneously, and it falls over. Name three fixes and pick one to deploy first.

    3 min answer cachingthundering-herdstampedemeta
  3. Caching Strategies advanced

    A quick-commerce platform holds inventory across hundreds of dark stores that changes continuously. Which inventory data must be strongly consistent, which can be cached, and what should happen at checkout when the cached view is stale?

    2 min answer zeptoinventoryconsistencycaching
  4. Caching Strategies advanced

    A social platform has 1% of content receiving 90% of requests. How should adaptive caching, hot-key replication, request coalescing and partitioning work together?

    2 min answer sharechathot-keyskewreplication
  5. Caching Strategies advanced

    Chat clients download the full workspace user and channel directory on connect. For large workspaces this is slow and expensive. A CDN does not help. Why, and what does?

    2 min answer slackedgecachingapplication-aware
  6. Caching Strategies advanced

    Design read receipts and unread counts for a messaging product. Why is this harder than it looks?

    2 min answer messagingstatewrite-volumedesign
  7. Caching Strategies advanced

    Uber's Docstore (a sharded MySQL-backed document store) serves reads dominated by recently active trips. CacheFront put Redis in front of it. Why build the cache into the storage layer rather than leaving it to each caller, and how must invalidation, read-your-writes and post-failover warming behave?

    3 min answer uberdocstorecachefrontredis