Every application has to store data. We mostly store Integer, String and Boolean values. One of the apps that I am maintaining uses several storage systems in parallel, namely FreeBase 2.0, JvAppIniFileStorage and JvAppXMLFileStorage. To put future design decisions on solid ground, I measured how fast 5000 entries are deleted, recreated, flushed to disk and reloaded. Out of curiosity, the performance of JvAppDBStorage and JvAppRegistryStorage was also checked under the same conditions.