I haven't done much online teaching so I've used an example of one I've done as a student. I've taken a few FutureLearn courses and they followed a fairly standard weekly pattern, which was as follows: link to document.
The design seemed to encourage the running of the course to be as automated a process as possible, which was probably intentional due to the number of students on the courses. Most of the documents to be read had been published elsewhere and were freely available online and the participation of the course leaders was mostly about being involved in the forum discussions. The investment of time looked to have come before the course in the preparation of the videos that bookended the week, which were of high production quality.