A legacy feature from [sveltekit-adapter-aws](https://github.com/MikeBild/sveltekit-adapter-aws) is that the `cache-control` header is set to `no-cache` for all server responses. See, for example, [here](https://github.com/Data-Only-Greater/sveltekit-adapter-aws-base/blob/7329826587548bee74d055cc32ffc97e97575f59/lambda/serverless.js#L63). The logic behind this is not explained, and it might be that caching the server responses is OK. Needs futher investigation.