Bite-sized 15-minute lessons on the obscure distributed systems patterns that interviewers love — taught by the engineers who built them at FAANG.
One-time payment · No subscription · New lessons added regularly
Why Patterned
Each lesson is a single pattern, distilled to its essence. Learn on a lunch break, not a sabbatical.
Every lesson is written by engineers who built these systems at Amazon, Google, and Meta.
We cover the obscure-but-critical patterns that generic courses gloss over — the ones that actually get asked.
$29 gets you the full library — no subscriptions, no upsells. New lessons added regularly.
The Library
Each lesson covers one pattern in depth — the theory, the real-world usage, and how to explain it in an interview.
How Riot Games and Epic keep millions of scores consistent at sub-100ms latency.
The conflict-free replication pattern behind Figma, Notion, and Google Docs.
Why Stripe and Cloudflare chose token buckets over sliding windows — and when you should too.
Zero-downtime data rebalancing — the technique DynamoDB and Cassandra rely on.
How Netflix prevents cascade failures when downstream services can't keep up.
The Kafka pattern that guarantees your events are never lost or duplicated.
Save 40% cache lookups with probabilistic data structures — used at Google and Akamai.
How Amazon isolates blast radius so one bad microservice doesn't take down the fleet.
Coordinate multi-service workflows without two-phase commit — the Uber approach.
Build fault-tolerant systems that self-heal — the protocol behind etcd and CockroachDB.
+ more lessons added every month
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