I am using the Google Books API.
I currently have a Queries Per Day Limit of 1M, and a Queries per user per 100s Limit of 100.
I make requests in my server on behalf of users, so I use the quotaUser parameter.
Now, here's the rub:
In one step (when a user imports a CSV of books) -- I need to create a bunch of requests.
To do this, I send a random UUID as the quotaUser parameter, and make requests in parallel.
Here's the problem though:
Google Books still sometimes sends me 429s. It says:
Quota exceeded for quota metric 'Queries' and limit 'Queries per minute per user' of service 'books.googleapis.com' for consumer 'project_number:XXXX
I don't understand how this could be. If quotaUser works, there's no way I would be sending more than 100 requests per minute for a single quotaUser id.
In what ways could I debug this?
When I look at Cloud Console, I don't see a page, where I can see exactly the params that are being sent (perhaps quotaUser is not coming in, or something like this)
For posterity, after research I realized this was a real bug on Google Books API. It's not too well integrated yet with Google Cloud -- quotaUser just doesn't work.