This is a system design question asked in a google interview. Interviewer wants to design a system to support google doc. It allows multiple persons to edit the doc at same time and have good experience of editing it on local machine.
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what do you mean specific question? – Peterxwl May 09 '16 at 02:55
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I think this question is valid and meaningful. I was asked the question too. How to design a google doc to support concurrent editing?
Apparently, using lock for each read/write will bring poor performance and terrible end user experience.
It is something called Differential Synchronization. https://neil.fraser.name/writing/sync/
kchen59
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