Building a Java efficient memory store

Java Memory

• https://dzone.com/articles/preventing-your-java-collections-from-wasting-memo

Column oriented

• The basics https://blog.acolyer.org/2018/09/26/the-design-and-implementation-of-modern-column-oriented-database-systems/
• Starting Java implementation https://medium.com/@entzik/a-time-series-columnar-store-exercise-4e2d77fe
• Compression and more https://lemire.me/blog/2017/11/10/how-should-you-build-a-high-performance-column-store-for-the-2020s/

Graph

• https://github.com/Netflix/netflix-graph