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Efficient caching of data is critical to provide high throughput and low latency while data is backed in an object store such as S3. This caching takes place at two layers: in distributed storage, where Postgres pages are materialized for high write throughput and read serving; and on the Postgres compute itself to serve frequently accessed pages from DRAM for ultra fast access. We've been hard at work making improvements to the compute side caching, and in this blog will lay out our near term plans and delve into what has already been shipped to customers. First, some background on how we got here. The standard Postgres cache Databases are famously hungry for DRAM (memory). 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