Ask HN: VaporCache, An In-Memory KeyValue Extension for AWS Lambda

I started to implement a new idea a few weeks ago, and then I stopped because I wasn’t sure that it’s a good idea.

Now I decided to share it with you to see what you think about it. VaporCache, as I named it is an “In-Memory KeyValue Extension” for AWS lambda function.

Here are a few things that specifies this:

* It’s an AWS Lambda Extension, and it’s only accessible within the lambda execution environment.

* It’s in-memory, like any other in-memory database, main storage is memory.

* It’s a KeyVakye database, just like Valkey or Redis, and the RESP3 protocol is used here. Meaning you could use any redis client to communicate with it.

* It’s not a distributed database.

Use cases that I can think of:

* To cache data within a lambda execution environment to use it between different invokes. * To take responsibility for memory management, to prevent OOM errors in lambdas.

Looking forward to your feedback.