The cluster will be upgraded to rapid-cdn 1.0.501, delivering every change since 1.0.469. Please consult the changelog for details. This finishes the upgrade cycle reverted on 22/07/2026: the error-page manager that did not scale has been rewritten and validated at this cluster's scale.

• Custom per-site 502/503/504 error pages
• Accept-Encoding normalisation, and gzip compression by default for clients that send none
• HTTP/2 and HTTP/3 handling fixes
• Slave parameters serialised as XML (custom-personal, default)
• Cluster error-page manager and passive slave-validation audit database
• New parameters: instance-retention-delay, dns-nameserver, monitor-interface-url
• Per-site error-page editor hardening: an empty save is rejected instead of blanking a served page, and edits typed into the other codes' fields are preserved
• Per-site 502/503/504 pages are also served on failover; redirect sites are no longer offered an error-page upload URL
• Error Page Manager rewritten for resilience and scale: threaded request handling, and per-site publication cost follows the number of overrides
• Node-level schemas accept unknown parameters, allowing mixed-release clusters during upgrades with fast rollback
• HAProxy upgraded to the 3.4 LTS branch (3.4.2, PCRE2); backend SSL verification for authenticate-to-backend kept chain-only

12/08/2026 09:30 GMT: Canary.CDN upgrade cancelled

The maintenance is cancelled: a blocking problem was found in the new software release. It will be rescheduled.

19/08/2026: Canary.CDN upgrade

The cluster is going to be upgraded.