Troubleshooting why a build is failing due to a cache miss


Caching is a good strategy for optimizing jobs on CircleCI as it enables the reusing of the data from expensive fetch operations from previous jobs.

However, cache hits are not guaranteed; caches created via the save_cache step are only stored for up to 15 days.

Hence if you're writing your jobs in a way that they fail or do the wrong thing when there's a cache miss, consider improving them to be resilient to a cache miss.


  • Make sure that a job that makes use of cached dependencies should be written such that it would be able to do a fresh fetch of the required dependencies upon a cache miss

Your jobs should not fail due to dependency changes or when caches expire.

Caching documentation


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