Open-Source

Sharing long-lived BuildKit instances across CI jobs cost us up to 4% of our container builds to unpredictable failures and noisy-neighbor contention. We replaced them with ephemeral, fully-isolated builders provisioned per job by a Kubernetes operator we’ve open-sourced, and build success now sits at 99.97%.

Every platform team that wanted to notify engineers about something ended up writing the same Slack bot again — parse the webhook, find the right person, send the message, maintain the deployment forever. Mailroom is the framework we built to stop doing that, so teams write only the handler that turns an event into a useful notification and let it handle routing, preferences, and delivery.