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From Hydras to TACOs: Evolving the Stanford Digital Repository
Harlow, Christina ; Fahy, Erin
Stanford University Library has a robust digital library system called the Stanford Digital Repository. This repository holds a little under 500 TB of materials in preservation and online for researchers, capture of scholarly output, and digitized cultural heritage materials. These materials are managed across 90+ codebases serving a variety of functions from self-deposit web applications, to a nearly 10 year old parallel processing framework, to a digital repository assets publication mechanism leading into our Blacklight, Spotlight, and Geoblacklight applications – among other services and needs. At the core of this system is a Fedora 3 store. With Fedora 3 now end-of-lifed, and our system suffering from limited to no horizontal scalability options, we’re revisiting our system and architecture. We are writing it from the start with a goal to have data-forward, distributed microservices and some event-driven processing components. TACO, our new core management API, is the heart of this new architecture, and is currently being developed as a prototype. This talk will walk through the process of analysing our current system via a dataflows analysis; designing a new architecture for our digital library with a wide ranging set of requirements and users; prototyping a core component of our new architecture to be horizontally scalable as well as data & specification driven; then planning how to create ‘seams’ in our current system to migrate towards our new system in an evolutionary fashion instead of a turn-key migration.
Slides: idr-1245_1 -  PDF
Video: ELAG2018-Harlow -  MP4
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Rethinking the IT system architecture
Berthold, Henrike
The Saxon State and University Library in Dresden (SLUB) is the university library of Dresden University of Technology (TUD) and the state library of Saxony with a history starting in1556. Because of these two roles, it is an independent research institution with a range of tasks. They include services for TUD, such as an open access repository, support for specific research communities, collection and long-term preservation of digital documents published in Saxony, and internal production and processing workflows. In the presentation I will present the target IT infrastructure, the background of some design decisions, the challenges we have identified and the projects we currently run to develop our infrastructure towards the target one.
Slides: idr-1244_1 - PDF
Video: ELAG2018-Berthold - MP4
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