Home / Architecture Explorer / Reddit architecture Reddit architecture On the roadmap: Interview Ready · step 3: Feeds, chat and notifications
Votes go through queues, and listings are precomputed. 9 components, 2 request walk-throughs.
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Apps and web CDN Load balancers App servers Memcached Queues Queue workers PostgreSQL Cassandra
A simplified model based on public talks and engineering write-ups. Real systems are larger and change over time.