If I add some documents to a SolrCloud shard in a collection "alpha", I can post them to "/solr/alpha/update". However I notice that you can also post them using the shard name, e.g. "/solr/alpha_shard4_replica1/update" - in fact this is what Solr seems to do internally (like if you send documents to the wrong node so Solr needs to forward them over to the leader of the correct shard).
Assuming you *do* always post your documents to the correct shard, is there any difference between these two, performance or otherwise? Thanks! - Ian
