By Greg Nowak , 17 August, 2026 Nginx 1.30 Changed the Upstream Defaults—Test Before You Upgrade Nginx 1.30 defaults upstream proxying to HTTP/1.1 with keepalive enabled. Here is what to inspect, model and test before upgrading. Tags Nginx reverse proxy Linux Operations Performance upgrade testing
By Greg Nowak , 16 May, 2026 Let's Encrypt Profiles Put Renewal Assumptions Under the Microscope Let's Encrypt's May 2026 profile rollout left classic certificates at 90 days, but made ACME profile choice, challenge paths, hooks, and monitoring harder to ignore. Tags TLS Let's Encrypt Certbot Linux Operations Certificate Management