Recently created a minimal persistent relational database in Go. Main focus was on implementing & understanding working the of database, storage management & transaction handling. Use of B+ Tree for storage engine(support for indexing), managing a Free List (for reusing nodes), Support for transactions, Concurrent Reads.
Still have many things to add & fix like query processing being one of the main & fixing some bugsRepo link - https://github.com/Sahilb315/AtomixDB
Would love to hear your thoughts