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As we have many software architecture patterns available like peer-to-peer, client server, Observer and a lot more, which one does Dropbox uses ? and why it has selected that specific architecture? Please list out its pros and cons as i am unable to find much info on these topics.
Hey Akhil_M_S, I'd happily take it from where you left off with Daphne; I hope my message finds you well today!
To answer your initial question Akhil, different features on different platforms tend to have slightly different models, but the most common pattern is the observer pattern. This is implemented as long-polling from the client to the server, which holds the canonical representation of the data. For example, we do this for a lot of sync features, but also for comments/file activity. Where we don't use long-polling, we do client/server polling.
Hope that helps with your class presentation and good luck with your project!
Dropbox StaffHi Daphne ,
Thanks for the link. I had gone through the same yesterday. But i didn't get the exact answer. Actually my question is regarding the architecture pattern used by Dropbox. For example when i go through the link you attached it feels its a Publisher Subscriber pattern, but some say it as a Observer pattern with central server pushing the changes to the client. Could you please help me with the same ? As i have chosen this topic to present in my class..
Thanks,
Akhil
Dropbox StaffHi Daphne,
I was reading about the Dropbox architecture. (Streaming File Sync). And in my search for the backend database details I found this thread. In the Under the hood : architecutre overview , i understood that Metadata database is a RDBMS. Is it fair to understand that the block storage where the actual files is on the cloud (S3)?
Dropbox StaffHi prasanthkp; how are you today?
Sorry to jump in here, but quoting from the relevant resource I just wanted to let you know that (sic) once a file is added to your Dropbox, it's synced to our secure online servers. All files stored online by Dropbox are encrypted and kept in secure storage servers. Storage servers are located in data centers across the United States. Additionally, storage servers are available in Germany, Australia, and Japan for some Dropbox Business users.
For reference, here's a diagram of how the service exactly works:
