# The app hangs when an outside service is down

Prompts to start with when a codebase shows this problem.

- [When an outside service goes down](https://atlasscope.dev/prompts/when-an-outside-service-goes-down): Asks what happens to the app when Google, the AI Gateway or a service that sends it updates goes down.
- [Parallel work with no limit](https://atlasscope.dev/prompts/parallel-work-with-no-limit): Finds work run in parallel with no limit, which can swamp the database connections or an outside service.
- [Fallbacks that look like real data](https://atlasscope.dev/prompts/fallbacks-that-look-like-real-data): Finds screens that show a confident zero or an empty list when the real answer is 'we could not load this'.
- [Half-finished failures](https://atlasscope.dev/prompts/half-finished-failures): Finds what is left behind when something fails halfway.

Source: https://atlasscope.dev/fix/the-app-hangs-when-an-outside-service-is-down