Some of my members complained about not being able to search for a few industry specific terms that are less than 4 characters. Not sure why they're complaining now vBulletin had the same limitation, if I recall correctly. Anywho my hosting is managed so I had them install Elastic Search, activated the plugin, added a few words, and rebuild the index. It was so easy a caveman could do it!
I had Slav help me install it on a test site of a million-plus posts. It's going to be a whole new world - allowing for those short words. In my industry, lots of manufacturers are known by two letter codes. Also the names and model numbers are often 2 or 3 characters. In terms of speed - I don't yet see a difference - some searches are actually slow, but I suspect that is due to the searches not being done often and therefore not cached, etc.
