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understanding rate limiting in github's api

github's api enforces rate limiting to prevent abuse and ensure fair usage across its services. rate limits are set per user, repository, and application, depending on the type of authentication used. however, sometimes bugs or unexpected behaviors can affect how these limits are enforced.

what is rate limiting?

rate limiting is a technique used by apis to control the amount of incoming requests to ensure stability and performance. for github, the limits are defined in terms of the number of requests per hour.

rate limits overview

**unauthenticated requests**: 60 requests per hour.
**authenticated requests**: 5000 requests per hour for users, 15,000 requests per hour for github apps.

common bugs and issues with rate limiting

one common issue that developers might encounter with github's rate limiting is related to the miscalculation of remaining requests, particularly when making multiple requests in rapid succession. here’s a hypothetical scenario:

scenario: miscalculation of remaining requests

imagine you have a script that makes multiple api calls in a loop. you expect the script to respect the rate limit, but you receive a `403 forbidden` error due to exceeding the limit unexpectedly.

example code

here is an example of a python script using the `requests` library to interact with github's api, which may illustrate the issue.

```python
import requests
import time

github api endpoint
api_url = "https://api.github.com/user/repos"
replace 'your_token' with your github token
headers = {
"authorization": "token your_token"
}

def check_rate_limit():
response = requests.get("https://api.github.com/rate_limit", headers=headers)
if response.status_code == 200:
return response.json()["rate"]["remaining"], response.json()["rate"]["reset"]
else:
print("failed to fetch rate limit info")
return none

def fetch_repositories():
for i in range(100): attempting to fe ...

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