class CommentsController < ApplicationController
  def create
    @post = Post.find(params[:post_id])
    @comment = @post.comments.build(comment_params)
    @comment.author = current_user

import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["input", "counter"]
  static values = {
    max: { type: Number, default: 280 }

<div class="post">
  <h1><%= @post.title %></h1>

  <%= turbo_frame_tag "post_#{@post.id}" do %>
    <div class="post-content">
      <%= simple_format @post.body %>

class ExternalApiClient
  def fetch_user_data(user_id)
    ActiveSupport::Notifications.instrument(
      'api.external_service',
      service: 'user_service',
      operation: 'fetch_user',

class ProcessUploadJob < ApplicationJob
  queue_as :default

  retry_on StandardError, wait: :exponentially_longer, attempts: 5
  discard_on ActiveJob::DeserializationError

class CreateUserStatsView < ActiveRecord::Migration[6.1]
  def up
    execute <<-SQL
      CREATE VIEW user_stats AS
      SELECT
        users.id AS user_id,

Rails.application.config.middleware.insert_before(
  Rack::Runtime,
  Rack::Timeout,
  service_timeout: 15  # 15 seconds
)

class CreateApiKeys < ActiveRecord::Migration[6.1]
  def change
    create_table :api_keys do |t|
      t.references :user, null: false, foreign_key: true
      t.string :name, null: false
      t.string :key_digest, null: false

# In rails console
query = Post.joins(:author)
           .where(published_at: 1.week.ago..Time.current)
           .where(users: { status: 'active' })
           .order(created_at: :desc)

amazon:
  service: S3
  access_key_id: <%= Rails.application.credentials.dig(:aws, :access_key_id) %>
  secret_access_key: <%= Rails.application.credentials.dig(:aws, :secret_access_key) %>
  region: us-east-1
  bucket: <%= Rails.application.credentials.dig(:aws, :bucket) %>

module Api
  module V1
    class UsersController < BaseController
      def show
        user = User.includes(:profile).find(params[:id])

cleanup_expired_sessions:
  cron: '0 2 * * *'  # Daily at 2 AM
  class: CleanupExpiredSessionsWorker
  queue: low
  description: Remove expired sessions from Redis