We already explored GeoWebcache in the earlier chapters. In the Setting up GeoWebCache recipe of Chapter 5, Advanced Configurations, you configured it properly to store your tiles. In fact, you changed the default folder, that is,
Temp under the Tomcat installation path, to a custom location.
The cache size may grow very large and fill your filesystem. Luckily, among its features, there is one feature that enables you to fine-tune the amount of space occupied by cache tiles on the disks.