One of my recent projects has been the design and implementation of ALEX which is an ML-enhanced range index, similar in functionality to a B+Tree, but is up to 4X faster and 2000X more compact than a B+Tree. Our implementation is also a near drop-in replacement for C++ Standard Template Library’s ordered indexes (std::map or std::multimap). You can learn more about ALEX in our SIGMOD 2020 paper (https://lnkd.in/gEGXXri) and our extended technical report (https://lnkd.in/gwp7WRu). We have made the ALEX source code available on Github (https://lnkd.in/gSQte_7).