12 Design Flickr
This chapter covers
- Selecting storage services based on non-functional requirements
- Minimizing access to critical services
- Utilizing sagas for asynchronous processes
In this chapter, we design an image sharing service like Flickr. Besides sharing files/images, users can also append metadata to files and other users, such as access control, comments, or favorites.
Sharing and interacting with images and video are basic functionalities in virtually every social application and is a common interview topic. In this chapter, we discuss a distributed system design for image-sharing and interaction among a billion users, including both manual and programmatic users. We will see that there is much more than simply attaching a CDN. ...
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