Egres: A Postgres-compatible database for heavy, multi-tenant workloads

Run Egres on one box with NVMe, or point a fleet of stateless compute nodes at a bucket. SSTables are immutable files, so they live equally well on a local disk or on object storage — no separate product, no different build.

Operationally, that is the whole story: one binary, no sidecars, no separate metadata or coordination service to run. The same egres serves a laptop, a single server and a fleet.

Local diskRemote S3

same binary · one flag · auto-switching

$ egres --store dir-path=./data$ egres --store "s3-endpoint=https://s3.amazonaws.com; s3-bucket=acme-prod"

egres

NVMe · /data

egresstateless + chunk cache

egresstateless + chunk cache

egresjoining…

S3 · s3://acme-prod

one process · sql, storage engine and cache on one box · the fastest path for a single nodestateless compute · SSTables live in the bucket · add a node by pointing it at s3://acme-prod