Gary Read, Engineering Manager at Freelancer.com. Writing about developer tooling, infrastructure, and self-hosting.https://gread.uk/https://gread.uk/writing/composer-dump-autoload-is-busy/https://gread.uk/writing/composer-dump-autoload-is-busy/A Friday night hotfix blocked by a 3-hour deployment pipeline. How classmap-authoritative autoloading made a missing PHP class invisible, and how to manually patch around it without installing anything on a production host.Fri, 08 May 2026 00:00:00 GMTphpsymfonycomposerproductiondebugginghttps://gread.uk/writing/btrfs-docker-nas-lessons/https://gread.uk/writing/btrfs-docker-nas-lessons/Building JS projects in your home folder on a btrfs NAS generates tens of thousands of indexed files and hundreds of Docker layers. Read-write NVMe cache meant every Docker build burned through laptop SSDs that weren't rated for it.Fri, 24 Apr 2026 00:00:00 GMTbtrfsdockersynologynvmestorageobservabilityhttps://gread.uk/writing/wireguard-throughput/https://gread.uk/writing/wireguard-throughput/Investigating why remote users were getting 5 Mbps through a WireGuard tunnel despite 400+ Mbps available on both ends. MTU fragmentation, TCP congestion collapse, and UDP buffer exhaustion.Sun, 05 Apr 2026 00:00:00 GMTwireguardnetworkingprometheussynologyhttps://gread.uk/writing/authentik-sso/https://gread.uk/writing/authentik-sso/Replacing per-service authentication with centralised SSO backed by Google OAuth. OIDC for Grafana, Immich, Portainer; forwardAuth for everything else.Thu, 02 Apr 2026 00:00:00 GMTauthentikssotraefikoauthhttps://gread.uk/writing/securing-internal-services/https://gread.uk/writing/securing-internal-services/Found that my *.internal.gread.uk services were publicly reachable via the VPS TCP proxy. Built a three-layer defence to fix it.Thu, 26 Mar 2026 00:00:00 GMTsecuritytraefiknginxwireguard