Rikolti update and temporary pauses to Calisphere harvesting

Posted about 2 years ago by Christine Kim

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Christine Kim Admin

In 2021, we started an active development project called Rikolti, to replace our current Calisphere harvesting infrastructure. Our Calisphere harvester is crucial to our technical pathways to aggregate collections from your local digital asset management systems, and enables us to pull a thumbnail version of your resources as well as a copy of the descriptive metadata. Our current Calisphere harvester uses older technologies adapted from the Digital Public Library of America's (DPLA) version 1 harvesting stack, developed in 2013. 

The work on Rikolti necessitates a temporary pause on some existing harvesting activities. As we approach the first iteration of Rikolti, we are focusing on allocating required developer resources and time to Rikolti development. 

Temporary pauses to Calisphere harvesting:

Through 2022 and 2023 we will temporarily pause harvesting from any new platforms not already in use by current contributors. Additionally, any requests to adjust harvesting pathways with current platforms will be considered on a case-by-case basis, until we are fully on the new Rikolti harvester.

We anticipate being able to bring on new harvest sources in early 2024 as a provisional timeframe.

The following services will not be impacted and so will continue as usual:

  • Harvesting from collections and sources that have been previously harvested using the current infrastructure.
  • Publishing new Calisphere indexes every other week.
  • Supporting metadata updates, remediation, and/or removal requests that support responsible and ethical access workflows; please contact us with any removal or remediation requests.

Please feel free to contact us with any questions. We will provide updates on anticipated timelines as our development work continues.

About Rikolti:

Rikolti is a project currently in development by the California Digital Library, to replace our existing harvesting infrastructure for Calisphere, which aggregates digital cultural heritage content from hundreds of organizations throughout California. Rikolti will implement a more streamlined and efficient framework, using current and supported technologies. For details, please visit our project GitHub page which includes our development plan, technology framework, as well as our requirements: https://github.com/ucldc/rikolti/wiki 

Building Rikolti is a highly intensive development project; we’re committed to developing infrastructure that uses current, well-supported systems that can continuously support the statewide aggregation of digital cultural heritage resources. We are aiming to completely replace our current harvesting infrastructure with Rikolti in 2023, as a provisional timeframe; we will provide updates on our timeline as our development work continues.

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