Comment by Escapado

I appreciate the article from a technical perspective. Is there anyone here who has used it in production regardless of the criticism and has some perspective to share on where it actually falls flat or situations where performance degrades massively? Them having built an MMO around it makes it look like the technical limitations around this pattern might(!) only matter for very specific workloads or for poorly implemented reducers - and my gut feeling is that you can also reach for postgres or sqlite and write very inefficient queries that quickly bog your system down as well. Just curious how it stacked up in the real world.