Show HN: An atlas of system designs with interactive architecture diagrams

Automated excerpt

A design that only works for the median user fails — fan-out cost is bimodal and the code path has to split. Fan-outDelivering one event to many recipients, like a post to every follower. CachingKeeping hot data in fast storage to skip slow lookups. CassandraWide-column database built for heavy writes across many nodes. Core featuresVery fast writes (LSM tree)Masterless, no single point of failureLinear scaling by adding nodesTunable consistency per queryMulti-datacenter replicationWhen to useWrite-heavy time series and activity feedsAlways-on, multi-region dataAccess patterns known upfront by keyPaginationReturning large result sets one page at a time.

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