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As long as you can fit it in your 1MB zip file, for viewer-request events.

For origin-requests you get 50MB. See https://docs.aws.amazon.com/AmazonCloudFront/latest/Develope...

You only have five seconds to process the entire request. If your lambda has to make a request to download a sqlite database every time, and the process it, it probably needs to be small enough to fit into 1MB anyway.

AWS Lambdas can run up to 15 minutes actually

Lambda functions running @Edge have different limits compared to vanilla AWS Lambda. You get 30 seconds to respond if it's on a cache miss (Origin Request/Response), or 5 seconds if it's on a cache hit (Viewer Request/Response): https://docs.aws.amazon.com/AmazonCloudFront/latest/Develope...

Lambda (at least the non-@edge version) comes with 512MiB of /tmp directory storage

And "The same Lambda execution environment may be reused by multiple Lambda invocations to optimize performance. The /tmp area is preserved for the lifetime of the execution environment and provides a transient cache for data between invocations. Each time a new execution environment is created, this area is deleted."

https://docs.aws.amazon.com/lambda/latest/dg/gettingstarted-...

https://aws.amazon.com/blogs/compute/choosing-between-aws-la...

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