Code bases have a nasty habit of becoming a complicated web of circular dependencies. To stop this happening, you need constraints on your project's structure. Meet Layer Linter, a tool to control the dependencies between modules in your Python project. https://layer-linter.readthedocs.io/en/latest/readme.html

This talk gives an insight on - optimising queries - understanding some postgresql internals - understanding postgresql locks - sharing experience on what can go wrong in production and how you can prevent it - some tips about postgresql from the experience i gained at my current company