Switch to ActiveSupport::Notifications.monotonic_subscribe#856
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SB-khushbum merged 3 commits intoApr 13, 2026
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Pull request overview
Adds support for Rails’ ActiveSupport::Notifications.monotonic_subscribe (when available) to improve notification subscription performance while maintaining compatibility with older Rails versions.
Changes:
- Conditionally select
monotonic_subscribevssubscribewhen registering Rails breadcrumb event subscriptions. - Document the enhancement in the changelog under “TBD”.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| lib/bugsnag/integrations/railtie.rb | Switches event subscription to use monotonic_subscribe when supported, falling back to subscribe. |
| CHANGELOG.md | Notes the enhancement for the upcoming release. |
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SB-jigneshR
approved these changes
Apr 13, 2026
Contributor
|
This looks fine to me given the testing detailed. No comments to make. |
twometresteve
approved these changes
Apr 13, 2026
SB-khushbum
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khushbu/PLAT-13040-switch_to_monotonic_subscribe
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This was referenced Apr 13, 2026
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Goal
Add ActiveSupport::Notifications.monotonic_subscribe for performance improvement. monotonic_subscribe was introduced in Rails 6.1+, so add a condition to use it only when available.
Testing