https://github.com/LEGO/kong-aws-request-signing/blob/main/kong/plugins/aws-request-signing/sigv4.lua#L208
this signing key generation result can be cached so that CPU time is not used on calculating the same signature hash over and over again for the same key.
https://github.com/LEGO/kong-aws-request-signing/blob/main/kong/plugins/aws-request-signing/sigv4.lua#L208
this signing key generation result can be cached so that CPU time is not used on calculating the same signature hash over and over again for the same key.