rails

import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["field"]

  validateField(event) {

<%# Subscribe every viewer of this post to its broadcasts %>
<%= turbo_stream_from @post %>

<%# Update the acting user's button to reflect the toggle %>
<%= turbo_stream.replace dom_id(@post, :like_button) do %>
  <%= render "posts/like_button", post: @post %>

production:
  adapter: postgresql
  encoding: unicode
  pool: <%= ENV.fetch("RAILS_MAX_THREADS", 5) %>
  timeout: 5000
  checkout_timeout: 5

class SessionsController < ApplicationController
  def new
    @user = User.new
  end

  def create

class AddMetadataToUsers < ActiveRecord::Migration[6.1]
  def change
    add_column :users, :metadata, :jsonb, default: {}, null: false
    add_index :users, :metadata, using: :gin
  end
end

class LikesController < ApplicationController
  before_action :set_post

  def create
    @like = @post.likes.find_or_create_by(user: current_user)

class CircuitBreaker
  class CircuitOpenError < StandardError; end

  def initialize(name, redis: Redis.current, failure_threshold: 5, failure_window: 60, cooldown: 30)
    @key = "circuit:#{name}"
    @redis = redis