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Hyku is the polished, turnkey, feature-full repository application product created by the Hydra-in-a-Box project in response to the call by the Institute of Museum and Library Services for a National Digital Platform. Hyku offers the Samvera community’s best of breed features, using commonly adoptable components wherever possible in the interest of interoperability and maintenance ease, and at the same time serves as a staging ground for some of the latest innovations developed in Samvera’s growing, collaborative, well-supported software framework.

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Hyku is a Rails application generated from Hyrax (the Samvera community’s follow-on effort to Sufia and CurationConcerns). All of its features come from Hyrax with a few exceptions. Currently these exceptions are: multi-tenancy, IIIF Image & Presentation API support, the Universal Viewer, and bulk import scriptscapability.

Furthermore a number of technical features distinguish Hyku from Hyrax:

  • In providing a user interface for easy configuration, Hyku is more opinionated in its customization options. (Advanced users should use Hyrax to generate their own applications that are open to code customization, as forking Hyku will be harder to maintain.)

  • Hyku offers simple user-management.
  • It is easier to keep dependencies pinned more tightly in Hyku.Hyku’s user interface may diverge from Hyrax’s in ways the Hydra-in-a-Box team finds appealing; the Hydra-in-a-Box team expects to continue designing and refining the Hyku UI over time.

  • Hyku is opinionated about its choice of database -- currently PostgreSQL -- for compatibility with the software component we use for multi-tenancy.

  • Hyku is opinionated about content types, currently shipping with two types (Generic Work and Image) and more to come.

  • Hyku uses Fedora-supplied UUIDs for object identifiers instead of NOIDs.

  • Hyku is easily deployable to Amazon Web Services using CloudFormation templates and every commit in the Hyku code repository’s master branch triggers an automatic deployment to an AWS-hosted demo instance.

  • Hyku is deployable locally via Docker Compose.

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