Performance implementing Large JSON Responses in Rails 7 Using ActiveModel Serializers
I've looked through the documentation and I'm still confused about I've searched everywhere and can't find a clear answer. I'm working on a Rails 7 application where I need to return a large JSON response that includes nested resources. Initially, I used ActiveModel Serializers to format the output, but I've been working with important performance optimization, especially when the dataset grows larger. The response times can exceed 5 seconds, which is unacceptable for our users. I've tried optimizing the serializers by including only the necessary attributes and using `include` to preload associated records, but the performance is still sluggish. Here’s a snippet of my serializer setup: ```ruby class UserSerializer < ActiveModel::Serializer attributes :id, :name, :email, :created_at has_many :posts end class PostSerializer < ActiveModel::Serializer attributes :id, :title, :content, :created_at end ``` And in my controller, I’m fetching the users like this: ```ruby class UsersController < ApplicationController def index @users = User.includes(:posts).all render json: @users, each_serializer: UserSerializer end end ``` Despite using `includes`, I still notice multiple queries being executed when I inspect the logs, and I sometimes get a `ActiveRecord::QueryCanceled` behavior due to timeouts when the database is under load. I've also considered paginating the results, but even then, the initial loading time for the first batch seems delayed. Is there a more efficient way to handle serialization in this case? Or should I be considering another approach like using a different gem for JSON rendering or caching the responses? Any advice would be greatly appreciated! I'm working on a application that needs to handle this. What's the best practice here? Any ideas what could be causing this? For context: I'm using Ruby on macOS. I'd really appreciate any guidance on this.