palkan/isolator

Health v2 · maintenance only

Adoption not part of the score

1119 stars · 31 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Isolator is a Ruby gem that detects non-atomic interactions—such as HTTP calls or background job enqueues—made inside database transactions in Rails/ActiveRecord applications. It is designed to be used in test and staging environments to catch unsafe patterns that can cause data inconsistencies.

Use cases

• detect HTTP API calls made inside a database transaction
• catch background jobs enqueued within a transaction
• find unsafe side effects in ActiveRecord after_create callbacks
• prevent data inconsistency bugs in Rails apps
• enforce atomic transaction best practices in tests
• audit staging environments for non-atomic interactions

When to choose

• you build Rails or ActiveRecord apps and want to catch transactional anti-patterns in your test suite
• you've been bitten by jobs or external calls firing before a transaction commits
• you want a plug-n-play gem that raises errors on unsafe interactions during tests

When to avoid

• you don't use Ruby, Rails, or ActiveRecord
• you need runtime monitoring in production rather than test/staging detection
• your background job adapter is transaction-safe and you don't need transactional guards

Facets

library · maturity active

testing database developer-tools developer-tools testing backend web-development ruby activerecord rails transactions atomicity test-tooling

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