The document discusses common mistakes made when using the Template Toolkit templating system and ways to improve performance. It mentions that people often break the Template Toolkit cache by discarding the Template instance and recommends keeping it. It also notes that Uri's benchmark of Template Toolkit did something different by templating in a scalar reference, which may be a bug. Template Toolkit is faster than it was originally shown to be, now over 300% faster, though Template::Simple is still much faster for some use cases. The document advocates for slower, heavier templates as it separates presentation from model and controller code.
