Schema changes are usually critical operations to perform on a high volume database. One thing off, and you are looking at an outage. pg-osc makes it easy and safe to run any ALTER statement on a production database table with no locking.

This post by Shayon Mukherjee is in response to the recently logged post by Mike Coutermarsh in praise of MySQL for infra folks:

This is not a MySQL vs PostgreSQL post. This is just a small summary of what I have come to appreciate about PostgreSQL as an Infrastructure Engineer.

Always good to keep in mind whenever comparing technologies: trade-offs abound and certain people in certain situations will value certain things about different technologies differently. That’s for certain. 😉