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TI-API: Store Inventory & Pricing API V2 - 429 responses with parallel requests

Debra Levy
Prodigy 10 points
Part Number: TI-API

Tool/software:

The documentation for Store Inventory & Pricing API V2 indicates a rate limit, Spike Arrest, of "20ps". I interpreted this as "20 requests per second", and I assume the meaning is that no more than 20 requests should be ongoing within any 20 second window, to account for the time until the request/response has completed. However, I am usually able to trigger a 429 response just by making 3 parallel requests. I have not seen a 429 response by making 2 parallel requests. This makes me wonder if there is an undocumented limit to two concurrent requests, or if I have misunderstood the rate limit documentation.

  • +1
    TI__Genius 10401 points

    Hi Debra,

    When a burst limit is set to 20 requests per second, the limit is enforced as approximately 1 call per 50ms. Consider throttling between each request instead of sending concurrent requests.

    Best regards,
    Paul

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