The default value for the "Flush Data Buffers" database Setting in 4D v12 is 20 seconds. In previous versions of 4D it was 15 minutes.

4D v12 features an improved cache manager that is more efficient when there are fewer changes in the cache to flush. Therefore flushing more often tends to be more efficient than in previous versions. The goal is to make the overall size of the flush smaller. This is particularly effective when using SSDs.

Note: this change does not automatically apply to converted databases; the previous value will be used. Unless you are experiencing performance issues with the cache there is not necessarily a reason to change it.