I am new in Kotlin. So maybe this post is just a bookmark for future. For example we want request some API for some data by POST to it an JSON array of ids from our Spring service.

A few weeks ago I faced with a requirement to optimize a huge JSON response from Rails-based API.

For example, we want to respond large set of data as JSON collection. In our controller, we have some action for that, but rails Live API couldn't stream JSON or XML directly. But we can use a little trick.