> When you say "two parallel requests from two users to single DIH > request handler", what do you mean by "request handler"? I mean DIH.
> Are you > refering to the HTTP request? Would that mean that if I make the > request from different HTTP sessions it would work? No. It means that when you have two users that simultaneously changed two objects in the UI then you have two HTTP requests to DIH to pull changes from the db into Solr index. If the second request comes when the first is not fully processed then the second request will be rejected. As a result your index would be outdated (w/o the latest update) until the next update.
