Example of JSON Read[A] and Try[A]

Example_calling_update.scala

Articles.update(valid) match {
  case Success(a) => {
    cache.Cache.remove("blog")
    Ok(Json.toJson(ArticleId(valid.id)))
  }
  case Failure(e) => {
    Logger.error("update error:", e)
    BadRequest(Json.toJson(Map("error" -> e.getMessage())))
  }
}