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Caching, fan-out and delivery
Hot keys, invalidation, edge delivery and precomputation for systems where reads dominate writes.
Design partitioning, bounded staleness and stampede control for a shared cache.
Design edge caching, origin protection and reliable invalidation of published content.
Build a feed for millions of readers, from everyday posts to celebrity fan-out.
Turn uploads into adaptive streams with reliable transcoding and private playback.
Separate candidate generation, versioned ranking and real-time eligibility checks.
Publish immutable content-addressed artifacts with safe tag updates and garbage collection.
Manage device sessions, refresh-token rotation and bounded revocation delays.
Evaluate bounded relationship graphs with revision-aware caching and revocation semantics.
Fetch immutable content chunks from untrusted peers with trusted manifests and origin fallback.
Serve track metadata and audio at scale while play events feed royalties and recommendations.
Rank posts by votes and age for a read-heavy front page while vote counts settle asynchronously.