Implementing Caching for AWS Lambda Functions to Enhance Performance and Reduce Backend Load

Hi, this article https://blog.devgenius.io/aws-lambda-caching-why-and-how-bd3c2d500c will propose you several solution to cache data from one invocation to the other. It happens in the Lambda runtime environment itself.

This one https://levelup.gitconnected.com/serverless-caching-strategies-part-3-lambda-runtime-b3d21250927b is similar from another source.

Otherwise you can use additional AWS services: AWS MemoryDb for Redis, AWS Elasticache, etc if you don't want to limit yourself to Lambda runtime itself depending on your use case.