Scaling SQLite to 4M QPS on a Single Server — Tips and tricks for scaling SQLite for 4M real-ish queries per second on a single server, and how bare metal compares to EC2 for this workload.
How to Query MongoDB with SQL? — This post is a step by step tutorial on how to run SQL SELECT Query against MongoDB with NoSQLBooster. SQL support includes SQL functions, expressions, aggregation for collections with nested objects and arrays.
PostgreSQL is DB Engines' 'DBMS of the Year' 2017 — Postgres might not be new, but its popularity has increased in the last year, fuelled by some fantastic releases, like Postgres 10, and its newest features.