Serverless Stack

File `cdk.context.json` should be added to source control?

CDK stores some states in there, ie. hosted zone information; # of AZs in ur region; etc

Yeah I saw it, but can this conflict with SEED?

so say if AWS adds a new AZ for ur region, u don’t all of a sudden have a new AZ, new VPC config when you deploy

&gt; We recommend that your project’s context files be placed under version control along with the rest of your application, as the information in them is part of your app’s state and is critical to being able to synthesize and deploy consistently.
<https://docs.aws.amazon.com/cdk/latest/guide/context.html>

I delete it sometimes when I want for example to refresh the SSM values.

I saw the ssm values are stored there, and sometimes I need to change them.

Oh yeah… I’ve heard ppl bringing that up b4

Yeah that’s why I don’t want to commit this file, tbh.

whenever you are calling CDK’s xxxxFromLookup, the value is will be cached

I also have VPC stuff there, because I do lookup also.

VPC, security-group and SSM, all of those are lookup for me.

yeah u probably want the VPC and SG stuff to be cached

for SSM, try using `fromStringParameter` or `valueForStringParameter`

the values shouldn’t be cached in the context

`fromStringParameterName`  requires to set an ID, what is that for?

Going to try `valueForStringParameter` better.

Looks like this worked, no cached values anymore.