Design a rate limiter

Design a service with the following functional requirements

1. Users should be able to upload and download files

2. The files should be able to be shared with other users

3. Changes to the files should be pushed to other users with the content on their machine

4. There must be no risk of file corruption

5. Keep track of different versions of the files so they may be rolled back

6. Users should be able to edit files without an internet connection and the changes sync up when a connection becomes available

Design a social network website with the following functional requirements

1. Users should be able to post content with text, images or video 2. Users should be able to follow other users 3. Each user will have a relatively low latency feed which shows content posted by users they follow

Functional Requirements

Users should be able to query plaintext documents (the twitter posts for this example)

Keep reliability and latency in mind

Functional Requirements:

1. Users can upload videos

2. Users can view videos

3. Search videos by video title

4. Videos should have like and view counts

5. Users can comment on videos