I ran a hosting company in the nineties. My experience: in those days everybody needed speed. Hardware was underpowered and number of hits unexpected. Connectio

I ran a hosting company in the nineties. My experience: in those days everybody needed speed. Hardware was underpowered and number of hits unexpected. Connection pooling was either unknown, or very new, in any case, not enabled by default. So a hit required a new connection to be started. This was way easier with MySQL, which was just a socket connection, where PostgreSQL started an entire new process for each connection. Way to slow. Because of this people even took for granted that you needed to check MySQL databases for errors every night.