Weekly Notes 40

• Amazing Japanese chiffon cake shop in her garage! Queues sell out in 2 hours!: Relaxing video of somebody in Japan making chiffon cake in their garage!

• To the crazy ones: Something worth remembering. Although I can’t get behind Musk sadly …

• Tales of Performance Engineering: A seemingly small inefficiency is discovered that dramatically impacted how much compute resources were required by their system.

• We’re All Just Looking for Connection: Slack hunting down a bug related to a connection being closed on one side but left open on another. Tricky.

• Bruno Prieto - Making accessible web apps with Rails and Hotwire - Rails World 2024: A seeing impaired developer talks about how to make websites more accessible. Really interesting to hear about how he perceives websites and uses them. (And the sorts of anti-patterns that make it hard.)

• OpenTelemetry Tracing in 200 lines of code: What adding tracing to a workflow looks like.

• An interactive study of queueing strategies: Amazing tutorial of how queues work that you can play with!

• Rosa Gutiérrez - Solid Queue internals, externals and all the things in between - Rails World 2024: Solid queue internals tech talk for new rails8 feature.

Sample github workflow for solid queue

• runs on push to repository and pull_request
• 2 stages: linting, units
• neat healthCheck for mysql
• neat setup of build context (2 dbs + a running app somewhere)
• small number of test stage steps
• very readable
• github

name: Build
on: [push, pull_request]

jobs:
  rubocop:
    name: Rubocop
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Setup Ruby and install gems
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: 3.0
          bundler-cache: true
      - name: Run rubocop
        run: |
          bundle exec rubocop --parallel
  tests:
    name: Tests
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        ruby-version: [3.3.5]
        database: [mysql, postgres, sqlite]
    services:
      mysql:
        image: mysql:8.0.31
        env:
          MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
        ports:
          - 33060:3306
        options: --health-cmd "mysql -h localhost -e \"select now()\"" --health-interval 1s --health-timeout 5s --health-retries 30
      postgres:
        image: postgres:15.1
        env:
          POSTGRES_HOST_AUTH_METHOD: "trust"
        ports:
          - 55432:5432
    env:
      TARGET_DB: $
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Setup Ruby and install gems
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: $
          bundler-cache: true
      - name: Setup test database
        run: |
          bin/rails db:setup
      - name: Run tests
        run: bin/rails test
      - name: Run tests with separate connection
        run: SEPARATE_CONNECTION=1 bin/rails test