Design an exabyte-scale object storage system with 11 nines of durability using Reed-Solomon erasure coding, a flat namespace, CDN-accelerated reads, explicit control plane / data plane separation, and an application-layer partial update system built on immutable blobs.
Algorithm patterns & code templates
End-to-end architecture problems
Design patterns & practical code
Deep dives into core tech
Production systems & operations
Consensus, replication & more
Kernel, networking & system calls
Quick reference cards for interviews
ADRs and trade-off analysis
Internal platforms & DX
Postmortems & reliability
Technical leadership & influence
Staff/principal level prep