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Questions about: throttling, the `backoff` flag, the quotas, or the rate limiting of requests made to the API. API calls are restricted both by per-second rates and by daily quotas.

2 votes

rate-limit per endpoint per IP VS. server apps in hosted environments

I completely understand and share your concern. (I have no intention of switching to C#, though.) My concern is for my own apps which share a server. StackMobile, StackList, StackCenter, StackImage, …
Nathan Osman's user avatar
  • 23.3k
0 votes

Key Limit is 10k or 100k?

This is most definitely a mistake. But I am all for changing it to 100000 - not that I need it (thanks to this bug).
Nathan Osman's user avatar
  • 23.3k
1 vote
Accepted

How many simultaneous queries may I make of the same Stack Exchange API?

The official rate limits are posted here. One thing you mentioned in your post does strike me as a little odd: "I've been doing a first call with pagesize=0 to determine how many pages there are …
Nathan Osman's user avatar
  • 23.3k
4 votes
2 answers
307 views

When does a rate-limit day start and end?

After reading the docs/faqs, I couldn't help but wonder... What exactly is a day? When does it start? When does it end? What timezone are you using? In other words, when my app runs out of reques …
Nathan Osman's user avatar
  • 23.3k
3 votes

What will be rate-limit of two different applications with two valid API keys from same IP?

If I'm not mistaken, you will only be allowed 10,000 requests from an IP address no matter how many keys you use.
Nathan Osman's user avatar
  • 23.3k
1 vote
1 answer
123 views

Confusion over my API key

This is directed at the team, since nobody else will be able to help. The key I took out for StackMobile is behaving strangely. I make a few requests, and then the limit resets to 0. (By limit, I'm r …
Nathan Osman's user avatar
  • 23.3k
4 votes
Accepted

Getting Question data using stack.PHP fails after a certain number of requests

Note: I'm the author of stack.PHP. You're likely running into rate limit issues. The API only allows you to make som many requests per second. Quoting from the question I linked to: The API will …
Nathan Osman's user avatar
  • 23.3k