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All Modules System Design Network & Edge

Network & Edge

DNS, CDNs, load balancers, gateways, and the protocols between the user and your first service.

0 / 30 solved

  1. DNS, Anycast & Global Routing

    DNS records and TTLs, GeoDNS, anycast, BGP, and DNS failover.

    0 / 4 solved

  2. CDN & Edge Caching

    Push vs pull CDNs, origin shielding, cache keys, purging, signed URLs, and edge compute.

    0 / 4 solved

  3. Load Balancing

    L4 vs L7, balancing algorithms, health checks, sticky sessions, and connection draining.

    0 / 5 solved

  4. API Gateway, Proxies & Service Mesh

    Forward vs reverse proxies, API gateways, sidecars, and service mesh data and control planes.

    0 / 4 solved

  5. HTTP/1.1, HTTP/2, HTTP/3 & QUIC

    Head-of-line blocking, multiplexing, server push, QUIC, 0-RTT, and connection migration.

    0 / 5 solved

  6. WebSocket, SSE & Polling

    Short and long polling, server-sent events, WebSocket, and which to use for chat, notifications, dashboards, and token streaming.

    0 / 4 solved

  7. REST, gRPC, GraphQL & Serialization

    REST, gRPC, and GraphQL, protobuf vs JSON, schema evolution, the N+1 problem, and streaming RPC.

    0 / 4 solved

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30 of 30 questions here are still unsolved.

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