Why data appears in database with delay?

Data never appears in database instantly, this is by design. logFaces server does bulk commits by using buffering mechanism. This is done for better performance and protection against load spikes. However, you've got full control of this buffering mechanism. There are two parameters in configuration. First - is the size of commit buffer. When buffer gets full, it gets flushed into database in one shot. Second - is a timeout allowing to flush this buffer periodically so that it doesn't stay half full for too long. By leveraging these two parameters you can adjust server for best performance in your environment.

Please refer to advanced configuration in user manual for more details.