Tags

Pages are tagged so you can browse by concept type. Two top-level tags:

• HLD — High-Level Design / distributed-systems building blocks (e.g. load balancers, CAP, replication).
• LLD — Low-Level Design / object-oriented + concurrency concepts (e.g. SOLID, design patterns, mutexes).

Some pages are tagged with both when the concept straddles both worlds (e.g. idempotency, observability).