Strategy in the world of Trove means a construct that allows developers to extend the functionalities of Trove by writing specialized implementations that can be abstracted.
This is a fully pluggable architecture, and what this actually means is that different technologies and different codes can be used to perform the same functions across different database engines.
The concept of strategies is used for backups, restores, replication, clustering, and storage (this determines where the backups are stored along with its associated properties). These are implemented in the guest agent code (can also be implemented for the API and task manager components), which also makes the code run closest to the place where the action has to happen.
So, effectively, each strategy needs to implement a list of functions at a minimum (these can be seen in the base.py file for that particular strategy), which the system can then use to call and perform the functions.
For example...