Apache log

In my logs folder there are 2 different subfolders. one is “http” and the other is “http.817615” What is the difference beween the two? Im using awstats, and want to use up-to-date stats instead of daily. both access.log’s have the same data, so wondering what is the difference?

And also about the rotating logs, is there a way to stop the logs from being rotated and just keep appending new data to 1 file every day no mater the size.
If not, is there a set time that logs are rotated each day?