Experience with http2

devto.conf

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+upstream app_devto {
+  server unix:///tmp/app_devto.sock fail_timeout=0;
+}
+
+server {
+  listen 80;
+  server_name localhost;
+  return 301 https://$host$request_uri;
+}
+
+server {
+  listen 443 ssl http2;
+  http2_push_preload on;
+  server_name  localhost;
+  ssl_certificate      /usr/local/etc/nginx/example.com+5.pem;
+  ssl_certificate_key  /usr/local/etc/nginx/example.com+5-key.pem;
+  ssl_session_timeout  5m;
+  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
+  ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:DES-CBC3-SHA:!RC4:!aNULL:!eNULL:!MD5:!EXPORT:!EXP:!LOW:!SEED:!CAMELLIA:!IDEA:!PSK:!SRP:!SSLv:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
+  ssl_prefer_server_ciphers   on;
+
+  root /Users/*****************/rails_optimizations/task-3/public;
+
+  try_files $uri/index.html $uri @app_devto;
+
+  location @app_devto {
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto https;
+    proxy_redirect off;
+    proxy_pass http://app_devto;
+  }
+}

nginx.conf

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+
+#user  nobody;
+worker_processes  1;
+
+# error_log  logs/error.log;
+# error_log  logs/error.log  notice;
+# error_log  logs/error.log  info;
+
+pid        logs/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+
+http {
+    include       mime.types;
+    default_type  application/octet-stream;
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    #access_log  logs/access.log  main;
+
+    sendfile        on;
+    #tcp_nopush     on;
+
+    #keepalive_timeout  0;
+    keepalive_timeout  65;
+
+    gzip  on;
+    include servers/*;
+}

production_staiging.rb

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+Rails.application.configure do
+  # Verifies that versions and hashed value of the package contents in the project's package.json
+  config.webpacker.check_yarn_integrity = false
+
+  # Settings specified here will take precedence over those in config/application.rb.
+
+  # Code is not reloaded between requests.
+  config.cache_classes = true
+
+  # Eager load code on boot. This eager loads most of Rails and
+  # your application in memory, allowing both threaded web servers
+  # and those relying on copy on write to perform better.
+  # Rake tasks automatically ignore this option for performance.
+  config.eager_load = true
+
+  # Full error reports are disabled and caching is turned on.
+  config.consider_all_requests_local       = false
+  config.action_controller.perform_caching = true
+
+  # Enable Rack::Cache to put a simple HTTP cache in front of your application
+  # Add `rack-cache` to your Gemfile before enabling this.
+  # For large-scale production use, consider using a caching reverse proxy like
+  # NGINX, varnish or squid.
+  # config.action_dispatch.rack_cache = true
+  config.read_encrypted_secrets = true
+
+  # Disable serving static files from the `/public` folder by default since
+  # Apache or NGINX already handles this.
+  config.public_file_server.enabled = ENV["RAILS_SERVE_STATIC_FILES"].present?
+  config.public_file_server.headers = {
+    "Cache-Control" => "public, s-maxage=2592000, max-age=86400"
+  }
+
+  # Compress JavaScripts and CSS.
+  config.assets.js_compressor = Uglifier.new(harmony: true)
+  # config.assets.css_compressor = :sass
+
+  # Do not fallback to assets pipeline if a precompiled asset is missed.
+  config.assets.compile = true
+
+  # Asset digests allow you to set far-future HTTP expiration dates on all assets,
+  # yet still be able to expire them through the digest params.
+  config.assets.digest = true
+
+  # `config.assets.precompile` and `config.assets.version`
+  # have moved to config/initializers/assets.rb
+
+  # Specifies the header that your server uses for sending files.
+  # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
+  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX
+
+  # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
+  config.force_ssl = true
+
+  # Use the lowest log level to ensure availability of diagnostic information
+  # when problems arise.
+  config.log_level = :debug
+
+  # Prepend all log lines with the following tags.
+  config.log_tags = [:request_id]
+
+  # Use a different logger for distributed setups.
+  # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
+
+  # Use a different cache store in production.
+  # config.cache_store = :mem_cache_store
+
+  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
+  config.action_controller.asset_host = ENV["FASTLY_CDN_URL"]
+  config.action_mailer.perform_caching = false
+
+  # Ignore bad email addresses and do not raise email delivery errors.
+  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
+  # config.action_mailer.raise_delivery_errors = false
+
+  # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
+  # the I18n.default_locale when a translation cannot be found).
+  config.i18n.fallbacks = [I18n.default_locale]
+
+  # Send deprecation notices to registered listeners.
+  config.active_support.deprecation = :notify
+
+  # Use default logging formatter so that PID and timestamp are not suppressed.
+  # config.log_formatter = ::Logger::Formatter.new
+  config.log_formatter = ::Logger::Formatter.new
+  if ENV["RAILS_LOG_TO_STDOUT"].present?
+    logger           = ActiveSupport::Logger.new(STDOUT)
+    logger.formatter = config.log_formatter
+    config.logger = ActiveSupport::TaggedLogging.new(logger)
+  end
+
+  # Timber.io logger
+  send_logs_to_timber = ENV["SEND_LOGS_TO_TIMBER"] || "false" # <---- production should send timber logs by default
+  log_device = send_logs_to_timber == "true" ? Timber::LogDevices::HTTP.new(ENV["TIMBER"]) : STDOUT
+  logger = Timber::Logger.new(log_device)
+  logger.level = config.log_level
+  config.logger = ActiveSupport::TaggedLogging.new(logger)
+
+  # Do not dump schema after migrations.
+  config.active_record.dump_schema_after_migration = false
+
+  config.app_domain = "localhost:3000"
+
+  config.action_mailer.delivery_method = :smtp
+  config.action_mailer.perform_deliveries = true
+  config.action_mailer.default_url_options = { host: config.app_domain }
+  ActionMailer::Base.smtp_settings = {
+    address: "smtp.sendgrid.net",
+    port: "587",
+    authentication: :plain,
+    user_name: ENV["SENDGRID_USERNAME_ACCEL"],
+    password: ENV["SENDGRID_PASSWORD_ACCEL"],
+    domain: "dev.to",
+    enable_starttls_auto: true
+  }
+end