2 — NoSQL Systems

Site Reliability Engineering: From Foundations to Internet-Scale Systems

The complete 184-chapter, 15-part Site Reliability Engineering curriculum — from Linux internals and distributed-systems theory through reliability engineering, observability, incident response, platform engineering, and Staff/Principal-level MAANG interview preparation, ordered the way SRE expertise actually develops rather than as a topic index.

1 — Relational Databases

ACID guarantees, transaction isolation levels, and the reliability characteristics an SRE inherits the moment a service depends on one.

3 — Distributed Databases

How a database spreads data and consensus across nodes, and the CAP-theorem trade-off it's making on your behalf whether or not that's documented.

4 — Replication

Synchronous vs. asynchronous replication, and the replication-lag failure mode that turns a 'read your own write' assumption into an intermittent bug report.

5 — Sharding

Partitioning data across nodes to scale past a single machine's limits, and the resharding operation that's usually the actual hard part.