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Handling complex JSON structures in Ruby on Rails while maintaining performance

πŸ‘€ Views: 200 πŸ’¬ Answers: 1 πŸ“… Created: 2025-06-05
ruby rails json performance serialization Ruby

I'm sure I'm missing something obvious here, but I'm trying to configure I'm testing a new approach and I'm sure I'm missing something obvious here, but I'm working on a Rails 6 application where I need to serialize a complex nested JSON structure that includes associations and custom attributes. The resulting JSON can get quite large, especially when including multiple associations that can also have their own nested attributes. I've set up my serializers using ActiveModel::Serializers, but I'm encountering performance issues when rendering these large JSON objects, and the response times are not acceptable. For example, I have a `Post` model that has many `Comments`, and each comment can have many `Replies`. Additionally, I want to include the author's name for the post and the comments in the JSON response. Here’s a simplified version of my serializer: ```ruby class PostSerializer < ActiveModel::Serializer attributes :id, :title, :body, :author_name has_many :comments def author_name object.author.name end end ``` And for the Comment serializer: ```ruby class CommentSerializer < ActiveModel::Serializer attributes :id, :body, :author_name has_many :replies def author_name object.author.name end end ``` In my controller, I'm using the following code to render the post with its comments: ```ruby def show post = Post.includes(comments: :replies).find(params[:id]) render json: post, serializer: PostSerializer end ``` Despite using `includes` to eager load associations, the response time is still quite slow, often exceeding 500ms. I also tried using `fast_jsonapi` gem to see if it could help, but I got a similar performance hit. I suspect that the nested associations might be causing this issue, but I’m not sure how to effectively optimize the serialization process without losing necessary data. I would appreciate any suggestions or best practices for handling such complex JSON structures efficiently in Rails. Is there a simpler solution I'm overlooking? I'm on Windows 10 using the latest version of Ruby. I'd love to hear your thoughts on this. Could someone point me to the right documentation?