Hope people aren’t tired of the “just use Postgres” meme yet (surely not @BenjDicken), but Postgres can be your filesystem too.
Today I’m launching sql-fs: a persistent bash sandbox over HTTP and MCP, backed by Postgres.
Most agent sandboxes still spin up VMs: cold start time, per-minute billing, and costs that climb when you run lots of sessions. I went a different way. just-bash is the virtual bash runtime. I built the distributed and persistent layer around it, which is a Postgres-backed virtual FS with consistency across replicas and in-process caching, so sandboxes are cheap to create, quick to resume, and durable across process restarts.
What you get:
• Filesystem state in your Postgres (RLS per sandbox)
• Content-addressable blobs (dedup across sandboxes)
• 3 layers of caching and locking for distributed exec
• Path and content caches so stat/read don’t hammer the DB every time
Repo: https://t.co/TZFrNNfEDy
I also wrote a longer blog post (see reply below) on how it works in depth. Have a read if you’re curious about the distributed design to achieve strong consistency :)
PS: thanks to @cramforce for the amazing just-bash!
So i wrote about all the stuffs that actually hurt me :( in prod so you don't have to when scaling agents
P/S: probs not 100% perfect but definitely saved me a ton. Also, thanks to @BenjDicken, @samlambert and the teams for some crazy good blogs!
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