Fig. 4.
Architecture of the HOGWARTs system. The galaxy retrieval algorithm saves the ranked galaxy lists for the 99% localisation region in a PostgreSQL database on Amazon S3. This database is connected to the HOGWARTs front-end on Heroku using the Heroku API. When a user requests the galaxy list, the website queries the database via Heroku routers and dynos to obtain the list of galaxies to render. Actions may be performed on this list in the Heroku back-end, including limiting the list based on visibility or detectability.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.