Data-Persistence is working on an MVP of a service for the persistent caching of outputs which correspond to MediaWiki page content (aka linked artifacts). See the (work-in-progress) proposal for more information.
The software is called Hoarde, and its source repo is: https://gitlab.wikimedia.org/repos/sre/hoarde.
Ideally we'd keep the software & service names disjoint, as we did for Kask (software), and sessionstore and echostore (services). Possible ideas for the service name are: linked-artifacts, linked-cache, linked-artifact-cache, artifact-cache, etc; Bikeshedding of service names welcome!
The service endpoint will need to be accessible from within the production network, and should presumably use the service mesh (it will be accessed from MW extensions). It will need to connect to Cassandra (the RESTBase cluster) for storage, and to make connections to configured "lambdas" (services running in k8s, including MLs k8s cluster).
See also: T402984: Data Persistence Design Review: Article topic model caching

