We recently deployed a feature that passed all tests in our Acceptance environment (functional tests, regression, smoke tests), but after deployment to Production, we encountered issues such as broken functionality, unexpected errors, and performance slowdowns.
Here’s the setup:
- Acceptance and Production environments are as close to identical as possible (same configurations, database versions, and server setups).
- Automated and manual tests ran successfully in Acceptance.
- The feature in question interacts with both third-party APIs and a legacy system.
However, after deployment to Production, users are facing:
- API timeouts and failed calls to third-party services.
- Slower performance in certain areas of the application.
- Data inconsistencies when interacting with the legacy system.
Has anyone experienced a similar issue where everything works fine in Acceptance, but things fall apart in Production? What are some potential causes or overlooked areas that could explain this discrepancy?
I’m particularly interested in suggestions around:
- Environmental differences that may not be immediately obvious.
- Hidden configuration issues.
- Performance testing gaps.
- Third-party service-related challenges in production that wouldn’t show up in acceptance.
Looking forward to hearing your thoughts and experiences!