Systems

Runtime internals, systems programming, distributed systems, and observability.

Subsections

Tokio	Async runtime — scheduler, I/O driver, timer wheel, blocking pool
Networking	TCP, HTTP/2, epoll/kqueue/io_uring, connection management
Distributed	Consensus, replication, CAP, CRDTs, partition handling
Event-Driven	Event loops, message queues, Kafka, NATS, backpressure
Observability	Tracing, metrics, logging, structured telemetry