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App-to-App Private Networking and Per-Deployment Deploy Logs

· 6 min read
FoundryDB Team
Engineering @ FoundryDB

App Hosting started by putting your app next to your data: a container on a dedicated VM, served over HTTPS, attached to your managed databases over a private SDN with credentials injected as env vars. The launch post hinted at where this goes next, "more than one app talking to a shared set of databases," and that is exactly what shipped.

Two features this round. First, an app can now attach to another app, not just a database, so a frontend can call an internal API entirely over the private network with no public exposure and no credentials to manage. Second, every deployment revision now records a deploy log: the ordered steps the platform ran to roll that revision out, with each step's status and duration. Here is each one.

App-to-database attachment wiring
WIRED private SDN · app → database
App SDNprivate⇄ peeringDatabase SDNprivate⇢ :5432PostgreSQLfirewall + pg_hba
App SDN① SDN peering② firewall + pg_hba③ env inject + redeployDatabase SDN :5432private SDN traffic (dashed)