Why is PostgreSQL getting dramatically more patches?

Bruce Momjian says

...the volume of patches [to PostgreSQL] has risen dramatically during the past few years.

This is total hearsay – I don’t have hard numbers, haven’t verified it myself, etc etc. But consider the source!

What can be responsible for this increase in patches to PostgreSQL?

I'm Baron Schwartz, the founder and CEO of VividCortex. I am the author of High Performance MySQL and lots of open-source software for performance analysis, monitoring, and system administration. I contribute to various database communities such as Oracle, PostgreSQL, Redis and MongoDB. More about me.