Hi Clément, in the future I plan on making the actual bin/evaluate use another database connection in order for the web interface to be isolated while it's querying.
Otherwise - as it is now in master - it can happen that while you are querying one page, half of the things have different values than you requested - which is really weird. For example right now you could query for a row with status=42 and get back data with status=43 (because it has been changed in the mean time). It's better to have serializable transaction isolation to prevent this. That means that each connection will have its own worldview that is fixed at the beginning of the connection's transaction. The worldview will update only once a new transaction starts. Therefore, it would be good for writers to have their own connection in the long run (really, for the readers to have their own connection - but that comes out the same). So it would be good to keep this in mind.
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