Hello @Ann-Marie Breaux! I think that there will be 1 event for 1 record. So, there will be 2,000 events for 2,000 records in an incoming file.

Hello @Ann-Marie Breaux! During the investigation in the scope of this task, we found a couple of bugs(already done) and a performance bottleneck. We want to fix it https://folio-org.atlassian.net/browse/MODPUBSUB-69#icft=MODPUBSUB-69 and than check performance with more events and how many HTTP requests effort we have MODPUBSUB-68

Thanks for putting this together @Volodymyr Rohach. One question from me: the webpage says that if the number of events is more than 500, they are not all received. If there were 2,000 records in an incoming import file, and each of them needs to match a number in the incoming record to a field in an Inventory Item record, would that be 1 event or 2,000 events? It will be pretty common to have large files being imported, so we'll definitely want to figure out what's causing events to get lost along the way.

As a result of this ticket was created new page with mod-pubsub performance testing: https://folio-org.atlassian.net/wiki/display/FOLIJET/mod-pubsub+performance+testing

CC: @Ann-Marie Breaux @Oleksii Kuzminov