DSA
Data Structures & Algorithms
Patterns, complexity, interviews
DSA for Building Systems
Patterns and structures that show up in real systems.
- ▸Arrays & hashing: caches, rate limiters, deduplication.
- ▸Two pointers / sliding window: streams, batching.
- ▸Trees & graphs: config, dependencies, workflows.
- ▸Dynamic programming: optimization, resource allocation.
- ▸Complexity: Big-O helps you choose the right structure.
Learn patterns, not just problems. Map them to system design and coding interviews.