Articles by
Mark Roberts

De-risking large-scale refactors
Learn how to minimize risks when performing significant refactors by testing, control rollout with feature flags, and enable observability in production environments. Discover how Propel leverages combinatorial and differential testing, shadow testing, feature flags, and observability using OpenTelemetry, Honeycomb, and LaunchDarkly.

Mark Roberts
August 22, 2023

Deployment Notes: How we document changes to production
How we use deployment notes to communicate changes internally, improve customer communication, and aid in incident response.

Mark Roberts
May 10, 2023

How we migrated to Apollo Server 4
Apollo Server 3 is officially deprecated, so it’s time to upgrade to Apollo Server 4. This post explains the expected and unexpected changes

Mark Roberts
January 10, 2023