Uncached expression compilation causes application freeze?

[rhegner]

For a while now we've been seeing occasional freezes in our ASP.NET Core 9 application in producation.

First we suspected some deadlocking issue (see #717 and #716). However, that was the wrong track.

Investigating in other directions I found that whenever the application freezes, we're seeing this:

Long story short: it looks like dynamic expressions are created faster than they can be finalized, ultimately leading to a complete freeze of the server.

Taking a memory snapshot on my dev machine and searching for "dynamic" types implies that NPoco is heavily using dynamic methods:

Questions:

1. Have you seen similar effects (freezing of the application) that could potentially be caused by NPoco?
2. Does NPoco cache its dynamically generated methods? If not, that could explain our freeze when new dynamic methods are generated at a high rate.