English

Last month, my team got a problem. When the lambda layer is updated but lambda which is linked with the lambda layer hasn't updated any parts in code, AWS CDK won't publish a new version of the lambda. As the result, when the lambda is executed, it will use an old version of the lambda layer.

Everyone who is a traveler or foreigner in Japan and is using an android device as their primary device might have experienced not being able to add an IC card into the device and they also can't use Pasmo or Suica mobile. Before I tell you about it, I want to explain how mobile payments work in Japan.