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sl0thentr0py merged 1 commit into from
Jul 14, 2026
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feat(ruby): Add hub_isolation_level #18719

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12 changes: 12 additions & 0 deletions docs/platforms/ruby/common/configuration/options.mdx
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Expand Up @@ -263,6 +263,18 @@ config.trusted_proxies = ["2.2.2.2"]

</SdkOption>

<SdkOption name="hub_isolation_level" type="Symbol" defaultValue=":thread">

Controls where the SDK stores the current hub, which holds the active scope. The default `:thread` uses thread-local storage. Set it to `:fiber` to use [Fiber Storage](https://docs.ruby-lang.org/en/3.2/Fiber.html#class-Fiber-label-Fiber+Storage) (requires Ruby 3.2+), which prevents cross-request scope contamination on fiber-based servers such as [Falcon](https://github.com/socketry/falcon) and other `async` frameworks.

```ruby
config.hub_isolation_level = :fiber
```

Requesting `:fiber` on Ruby versions below 3.2 logs a warning and falls back to `:thread`.

</SdkOption>

## Tracing Options

<SdkOption name="traces_sample_rate" type="Float" defaultValue="nil">
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