Name: Leipzig Gophers #55 - OpenCloud
Start: 2025-10-28T19:00:00+01:00
End: 2025-10-28T21:00:00+01:00

Hello, 世界!

For meetup #55 on Tuesday [Oct 28, 2025 19:00 CET](https://www.meetup.com/de-DE/leipzig-golang/events/305626267/) at [Basislager Leipzig](https://basislager.co) we are thrilled to welcome [Klaas Freitag](https://www.linkedin.com/in/klaasf/) (CTO) and Principal Architect [Dr. Jörn F. Dreyer](https://www.xing.com/profile/Joern_Dreyer) from [OpenCloud](https://opencloud.eu).

> OpenCloud is an open-source project that gives you a secure and private way to store, access, and share your files. – [GitHub: OpenCloud](https://github.com/opencloud-eu)

OpenCloud components were co-developed at [CERN](https://home.cern/) and a large community of active contributors.

> [OpenCloud] is based on a fork of the open source software ‘ownCloud Infinite Scale’ (OCIS), whose components were co-developed by developers from the science organisation CERN and other active participants. OpenCloud is now being further developed with new ideas and in the spirit of a reliable open source community and published under the Apache 2.0 and AGPL-3.0 licences. – [opencloud.eu](https://opencloud.eu/en/opencloud-community)

The core OpenCloud backend is written in Go and available at [opencloud-eu/opencloud](https://github.com/opencloud-eu/opencloud) (a few years ago, the backend was [ported from PHP to Go](https://www.heise.de/news/Mehr-Tempo-mit-Go-statt-PHP-ownCloud-Infinite-Scale-ist-einsatzbereit-7364770.html)).
We will hear about the architecture of the backend system and will have opportunity to explore and discuss the challenges of large scale storage systems.

More background on the project can also be found on recordings from [CS3](https://www.cs3community.org/) (Cloud Storage, Synchronization and Sharing) at [TU München](https://www.physik.lmu.de/en/latest-news/events-overview/event/cs3-2025-cloud-storage-synchronization-and-sharing.html): [https://opencloud.eu/de/cs3-2025-aufzeichnungen](https://opencloud.eu/de/cs3-2025-aufzeichnungen).
Open source infrastructure projects are a key to [digital sovereignty](https://policyreview.info/pdf/policyreview-2020-4-1532.pdf) which promotes independence, resilience and innovation.

### Schedule

* 18:45 Doors open
* 19:00 Welcome
* 19:10 OpenCloud presentation
* 20:00 Open Discussion
* 20:30 Bar Excursion ([Cantona](https://www.google.com/search?q=cafe+cantona))

We’ll meet:

* in person at [Basislager Leipzig](https://basislager.co), at [Peterssteinweg 14, 04107 Leipzig](https://maps.app.goo.gl/1fMkeDSPZ7Aauszh8) ([OSM](https://www.openstreetmap.org/node/3504864558))
* and online via [Google Meet](https://meet.google.com/adb-nibc-gcp)

FCFS Free drinks on site!

Join us for unique insights and discussions on Go, software architecture, and storage.

See you!

Learn more at [https://golangleipzig.space/posts/meetup-55-invitation/](https://golangleipzig.space/posts/meetup-55-invitation/)

Martin Czygan

Leipzig Golang Meetup

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