Additionally OrioleDB fundamentally changes design of buffer management and improves the vertical scalability a lot. https://www.slideshare.net/AlexanderKorotko

Additionally OrioleDB fundamentally changes design of buffer management and improves the vertical scalability a lot. https://www.slideshare.net/AlexanderKorotkov/solving-postgresql-wicked-problems?qid=d3638493-9a21-4143-8aa3-67228e4cd268&v=&b=&from_search=1 https://www.slideshare.net/AlexanderKorotkov/solving-postgre... Also, I have to mention that zheap development is inactive for now. And its undo implementation was never complete. Zheap undo works only if you don't update any indexed column. Otherwise, it works as plain heap with write-amplification and bloat.