Hey all, we've been working on various performance optimisations for Hibernate ORM; some were large and complex, some others where very small little things. I've been measuring impact step by step so far; quite happy to see the "combined" results are better than what I was hoping: Hibernate ORM 5.4.4-preview: avgt 4469.770 ± 35.198 us/op Hibernate ORM 5.4.3.Final: avgt 6271.767 ± 92.448 us/op Memory allocation also looks great: Memory allocated per TLABs: 22.02 GB -> 15.46 GB Allocation rate for TLBAs: 752.31 MB/s -> 528.40 MB/s (it's not worth looking at anything else than TLAB as we don't use other spaces) This is just a little update teaser; we should blog about it in more extended form. AFAIK Steve is already writing something to describe the new Enhanced Proxies feature; that certainly is the main thing - we could either combine the info in one blog or write a short series. Thanks, Sanne