Just now we uploaded a pre release of Morphium V2.2.21BETA3 on https://github.com/sboesebeck/morphium/releases/tag/V2.2.21BETA3
This release contains some major improvements in high load environments. Cache Performance greatly increase, lots of changes and updates dealing with issues we fund during heavy load testing.
Major change: when storing an Entity which is marked with @WriteBuffer
-Annotation, all buffered write requests will be executed using mongo's bulk write request support, which greatly increases performance while reducing load on mongodb.
This is still a pre-release, but tests look very good.
In parallel, work on Morphium 3.0.0 is proceeding, which will be a huge rebuild on top of the new mongo async driver 3.0, but it will be source compatible with 2.2.21.
Cheers,
Stephan