How to Handle Large JSON Responses with Circe in Scala 2.13 without Memory Issues
I'm collaborating on a project where I'm working on a Scala 2.13 application using the Circe library to parse large JSON responses from an external API. The JSON response can be quite large, often exceeding 20 MB, and I am working with a `java.lang.OutOfMemoryError` when attempting to decode it completely in memory. I've tried increasing the JVM heap size with `-Xmx2G`, but the question continues. My current code looks like this: ```scala import io.circe._ import io.circe.parser._ import scala.io.Source val jsonString = Source.fromURL("http://example.com/large-json").mkString val jsonResult = parse(jsonString) jsonResult match { case Right(json) => // Do something with the json case Left(behavior) => println(s"behavior parsing JSON: $behavior") } ``` I’ve also considered using streaming with Circe, but I'm unsure of the best way to implement that for my use case. If I use `fs2` for streaming, how can I ensure I properly handle the decoding and avoid memory issues? Additionally, are there specific configurations or practices I should follow to optimize memory usage when dealing with large JSON payloads? Any guidance on how to refactor my code would be greatly appreciated. This issue appeared after updating to Scala 3.9. I appreciate any insights!