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How would one achieve something similarly locally, short of just running a proxy and stuffing the request/response pairs into a DB? I'm sure it wouldn't be too terribly hard to write something, but I figure something open source already exists for OpenAI-compatible APIs.

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Recently did this workflow.

Started with nginx proxy with rules to cache base on url/params. Wanted more control over it and explored lua/redis apis, and opted to build a app to do be a little more smart for what i wanted. Extra ec2 cost is negligible compared to cache savings.

Yes! It's amazing how many things you can do with lua in nginx. I had a server that served static websites where the files and the certificates for each website were stored in a bucket. Over 20k websites with 220ms overhead if the certificate wasn't cached.

There are any number of databases and language-specific caching libraries. A custom solution or the use of a proxy isn't necessary.

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