Download limits

Yes. 

Simply put Dropbox is not a content delivery network and should not be relied upon at all. 

For example as a free user its limited to 20/gb per rolling 24 hours and 100,000 downloads. It is more for paid users which you can see here. However, if you hit those limits the links will fail and you cannot get around this. They will fail initially for 24 hours and each time get longer. 

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tralibex wrote:

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Are there any limitations of how many simultaneously downloads, bandwidth or requests can be made?

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Hi tralibex,

Your question includes (or may do it as presented) too many things, so difficult to get a single (universal) answer. Mark did clarify already the links limitations if you use API calls only to get links that you use after that. There may be additional limitations related to file content management (either upload or download - i.e. directed to content.dropboxapi.com) that are account related. You may check if your subscription imposes such limitations and if so, what they are. Other explicit limitations to API calls don't exist. There is possible to come up implicit limitations though; limitations related to how Dropbox works. It's difficult to recognize such an limits. When such a limitation comes up, you will be notified with RateLimitError (status code 429) or sometimes possible with 5XX status code. You have to be ready to handle such cases and repeat the request on go with some delay.

Hope this clarifies matter.