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27:00 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Scalability of GeoNetwork: Current Status and Future Directions

In recent times, phenomenon such as the Internet of Things or the popularity of social networks, among others, have been responsible for an increase availability of sensor data and user generated content. To be able to ingest, store and analyze these massive volumes of information is a standing challenge that is no longer ignored. The data about this data is generally speaking, less of a problem, if we think for instance that trillions of sensor records, may share the same metadata record; for this reason catalogs have been less exposed to the challenges that took by storm the database community. Nevertheless, a large variety of datasets can also pose some performance challenges to traditional catalogs, and demand increase scalability. In this talk we will look at strategies for scaling GeoNetwork through load balancing, at its current limitations, and we will discuss potential improvements by adopting distributed search server technologies such as SOLR or ElasticSearch. On the database side, we will review the current database support, which is limited to ORM, and discuss the possibility of extending it to support NoSQL databases, which could be horizontally scaled, unleashing a new generation of metadata storage.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
25:03 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Free, Open and Libre

What are the differences between free and open source? Is it just a legal issue or does it have direct consecuences? Does it really matter if a software is free or open? Which one is better for my usecase? How does the difference affect us? And how does it affect private companies? But, above all, what is "libre"? Why do we even need a third word on this subject? Will it really make a difference? María Arias de Reyna (GeoCat bv)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
20:39 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Integrating the spatial web with linked open data using GeoDCAT-AP

GeoDCAT-AP is an extension of DCAT-AP for describing geospatial datasets, dataset series, and services. It provides an RDF syntax binding for the union of metadata elements defined in the core profile of ISO 19115:2003 and those defined in the framework of the INSPIRE Directive. Its basic use case is to make spatial datasets, data series, and services searchable on general data portals, thereby making geospatial information better searchable across borders and sectors. This can be achieved by the exchange of descriptions of datasets among data portals.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
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