November 2025 Release Notes

Developer Tools
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Hey Fastly Community!
As 2025 winds down, we’re shipping one last batch of updates to make your Fastly experience merry and bright. There’s a little something for everyone in this month’s release.

Terraform Provider for Fastly v8.5.0

Enhancements

  • Compute ACL Entries CIDR Validation: Added CIDR validation to Compute ACL entries to ensure that only valid CIDR notations are used. (#1136)

Bug Fixes

  • Backend Keep-alive Time: Corrected a drift issue caused by the keepalive_time attribute in backend configurations. (#1156)
  • Header ignore_if_set: Preserved the optional boolean field ignore_if_set during updates for headers. (#1142)
  • Logentries Testing: Fixed tests for Logentries to account for API behavior. (#1143)
  • Image Optimizer Default Settings: Preserved optional boolean fields (allow_video, webp, upscale) during updates for Image Optimizer default settings. (#1145)
  • Kafka Logging: Preserved optional boolean fields (use_tls, parse_log_keyvals) during updates for Kafka logging. (#1147)
  • DDoS Protection Product Enablement: Ensured that ddos_protection mode updates are applied correctly. (#1149)
  • HTTPS Logging gzip_level: Corrected a bug where users that had a HTTPS logging block would encounter ‘gzip_level’ API errors after upgrading to the v8.1.0 provider or later. (#1118)

Fastly CLI v13.1.0

Enhancements

  • NGWAF Workspaces: Added support for update operations for NGWAF workspaces. (#1578)
  • Service Version Clone JSON Support: Added JSON support to the service-version clone command. (#1550)
  • Rust 1.91.1+ Support: Allowed usage of Rust 1.91.1 and later patch releases for Compute builds. (#1576)

Go-Fastly API Client v12.1.0

Enhancements

  • API Discovery API: Added a new API Discovery API.

Compute Runtimes

JavaScript (js-compute-runtime v3.36.0)

  • Image Optimizer Support: Added support for the Image Optimizer. (#1224)
  • 103 Early Hints: Implemented support for 103 Early Hints. (#1217)

Go (compute-sdk-go v1.6.1 and v1.6.0)

  • Handoff Websocket and Fanout v2: Added v2 versions of Handoff Websocket and Fanout. (#210)
  • Early Hints Status: Added support for sending StatusEarlyHints. (#201)
  • Image Optimization: Added support for image optimization.
  • Downstream Info Hostcalls: Added more downstream info hostcalls.
  • Reusable Sandboxes: Added support for reusable sandboxes.
  • Panic on Non-Client Requests: Fixed a panic when calling certain methods on non-client requests and fixed HandoffFanout. (#220)
  • Invalid 1xx Status Codes: Handled invalid 1xx status codes in client responses. (#218)
  • ErrClosed on Write: Translated badf errors on responseWriter write to a new ErrClosed. (#217)

And one last thing…

This will be my final monthly release notes post in this forum. Starting in 2026, we’ll moving to a new format for sharing updates. Stay tuned for more details!