Two sizes fit most: PostgreSQL and Clickhouse

What this post added

This post analyzes the historical and current landscape of database technologies, contrasting the general-purpose OLTP capabilities of PostgreSQL with the specialized OLAP capabilities of ClickHouse. It delves into the architectural differences between row-oriented and column-oriented storage, the evolution of in-memory databases, and the reasons why a single database architecture is not suitable for all workloads. The post also references GitLab's own migration from MySQL to PostgreSQL, underscoring the practical considerations for choosing database systems.