We have released our latest Grouping Update, which improves our coverage for C#, Ruby, Go, JS, Elixir, Scala, Java, PHP, and Python, improving coverage by 13 percentage points to 67%, and fixes over-grouping issues that affected 4.8% of occurrences. This has been automatically enabled for all accounts.
These improvements make Rollbar's grouping more accurate of the box, so you can get better signal-to-noise without having to create custom fingerprinting rules or manually merge items together.
Seeing any undergrouping (too many items) or overgrouping (not enough items) issues? Send us a note so we can address it in a future release: email@example.com