Fine-grained control. That's the theme for two new features which Wonseok has implemented in TopLink Essentials (TLE).
The first is a category-specific logging level control. It allows you to turn up logging for one area of TLE (such as its SQL-related logs) without impacting logging in other areas (such as the cache-related logs). The second is a new cascade refresh query hint. It provides runtime control over whether you want a refresh operation to cascade through to related entities or not.
Sometimes it's little knobs like these that can make a world of difference. So be sure to check out the details in Wonseok's writeup.