Where is Dependency caches stored?

[Pratyush Raizada]

I use Dependency caches for optimising my builds, but was curios to know where are these files physically stored? 

[Theodora Boudale · Accepted solution]

Hi @Pratyush Raizada and welcome to the community!

Dependency caches are stored across DynamoDB and S3, in us-west-1 region.

Kind regards,
Theodora

[remmerci1]

Is it always true in 2025?

I run builds on self-hosted runners (AWS ca-central-1) and I would like to optimize transfert costs. Caches downloads before each step and each build result in a certain cost. If I create a VPC Endpoint Service between my VPC and s3.us-west-1.amazon.com, caches downloads should be done by using internal AWS network without transit by NAT Gateway (less expensive).

Thanks,

Remi