For the past couple of months, I've noticed duplicate events being ingested, which are visible on my Amplitude dashboard. These duplicates appear about once every several thousand events and have the exact same timestamp down to the millisecond. I don't believe I'm sending duplicates, and even if I were, the timestamps would likely differ.

Does anyone have any insights into what might be the issue? I'm still using the https://api.amplitude.com/httpapi endpoint. Is this a known problem with the older endpoint compared to the new HTTP 2 API?