Preterview
A voice interview platform that provides AI-based voice interview services, involving asynchronous flows such as speech-to-text, TTS and LLM calls.
Timeline (last 90 days)
The developer of the voice interview platform Preterview, by calling the synchronous Anthropic client inside async def, caused the p95 first audio latency (TTFA) to reach 11.4 seconds at 8 concurrent users.
In Preterview's one-week production logs, the latency monitor recorded 1,412 warnings exceeding 100 ms, of which synchronous Anthropic client calls accounted for 868 (61%), pypdf resume parsing accounted for 325 (23%), and synchronous requests.post webhook + time.sleep retries accounted for 219 (16%).
The longest single block reached 7.9 seconds, caused by pypdf processing a 14-page resume, during which all in-progress interviews on the server went silent.
All Facts (3)
The developer of the voice interview platform Preterview, by calling the synchronous Anthropic client inside async def, caused the p95 first audio latency (TTFA) to reach 11.4 seconds at 8 concurrent users.
50%UnverifiedIn Preterview's one-week production logs, the latency monitor recorded 1,412 warnings exceeding 100 ms, of which synchronous Anthropic client calls accounted for 868 (61%), pypdf resume parsing accounted for 325 (23%), and synchronous requests.post webhook + time.sleep retries accounted for 219 (16%).
50%UnverifiedThe longest single block reached 7.9 seconds, caused by pypdf processing a 14-page resume, during which all in-progress interviews on the server went silent.
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