Replication and Consistency
Mechanisms for fault-tolerant systems: replicated state machines, consistency models (atomic, eventual, causal), Raft consensus protocol, CAP theorem.
Fault Tolerance and Reliability
Principles of fault tolerance: hardware/software/operational faults, error detection/correction, replication models (active-active, active-passive), checkpointing.
Performance Scalability
Covers multicore scalability, Amdahl’s law, cache coherence overhead, vertical and horizontal scaling, load balancing, and application state management.
Caching in Computer Systems
Comprehensive coverage of caching: CPU/disk/HTTP/DNS caching, cache eviction policies, consistency mechanisms, CDNs, and cache design principles.
Performance Profiling and Optimization
Explains performance profiling tools (perf, oprofile), hardware/software event monitoring, cache analysis, and techniques for identifying and fixing performance bottlenecks.