我正在开发一个Rails 3.2项目,最近几个月资产有了相当大的增长,尽管我不认为这个项目很大。这些资产包括JS(没有coffee-script)和SASS文件;我们有相当多的图片,但它们自从早期以来就一直存在,所以我认为它们不是一个重要因素。我们可能有大约十几个库,大部分都很小,最大的是Jquery UI JS。部署是通过Capistrano完成的,开始变得明显的是,部署到staging比部署到production要快得多。为了说明问题,避免涉及不同服务器和网络效应的因素,我在我的笔记本电脑上按照以下顺序运行了以下三个命令:
$ time RAILS_ENV=production bundle exec rake assets:precompile
^Crake aborted!
[Note I aborted this run as I felt it was getting stupidly long...]
real 52m33.656s
user 50m48.993s
sys 1m42.165s
$ time RAILS_ENV=staging bundle exec rake assets:precompile
real 0m41.685s
user 0m38.808s
sys 0m2.803s
$ time RAILS_ENV=development bundle exec rake assets:precompile
real 0m12.157s
user 0m10.567s
sys 0m1.531s
所以我很困惑。为什么不同的环境之间会有如此巨大的差异?我可以理解开发和预发布之间的差距,但是我们的预发布和生产配置是相同的。(我应该指出,生产编译将在大约2个小时后完成!)
虽然最终目标是加快我的预编译速度,但我想通过了解时间都去哪里了以及为什么Rails环境之间存在如此大的差异来实现这一目标。我看到其他帖子讨论使用不同的压缩器等问题,但我找不到任何关于如何调试这些rake任务以确定花费时间的位置并识别可能导致如此巨大差异的设置的信息。
我不知道人们可能需要什么额外的信息,如果有评论问到,我会进行更新。谢谢。
更新:下面提供了额外信息
config/environments/production.rb
和 config/environments/staging.rb
(它们完全相同):
MyRailsApp::Application.configure do
# Code is not reloaded between requests
config.cache_classes = true
# Full error reports are disabled and caching is turned on
config.consider_all_requests_local = false
config.action_controller.perform_caching = true
# Disable Rails's static asset server (Apache or nginx will already do this)
config.serve_static_assets = true
config.static_cache_control = "public, max-age=31536000"
config.action_controller.asset_host = "//#{MyRailsApp::CONFIG[:cdn]}"
# Compress JavaScripts and CSS
config.assets.compress = true
# Don't fallback to assets pipeline if a precompiled asset is missed
config.assets.compile = false
# Generate digests for assets URLs
config.assets.digest = true
# Enable locale fallbacks for I18n (makes lookups for any locale fall back to
# the I18n.default_locale when a translation can not be found)
config.i18n.fallbacks = true
# Send deprecation notices to registered listeners
config.active_support.deprecation = :notify
end
基本的 config/application.rb 文件如下:
require File.expand_path('../boot', __FILE__)
require 'rails/all'
if defined?(Bundler)
# If you precompile assets before deploying to production, use this line
Bundler.require(*Rails.groups(:assets => %w(development test)))
# If you want your assets lazily compiled in production, use this line
# Bundler.require(:default, :assets, Rails.env)
end
module MyRailsApp
CONFIG = YAML.load_file(File.join(File.dirname(__FILE__), 'config.yml'))[Rails.env]
class Application < Rails::Application
# Custom directories with classes and modules you want to be autoloadable.
config.autoload_paths += %W(#{config.root}/lib)
config.autoload_paths += %W(#{config.root}/app/workers)
# Configure the default encoding used in templates for Ruby 1.9.
config.encoding = "utf-8"
# Configure sensitive parameters which will be filtered from the log file.
config.filter_parameters += [:password]
# Enable the asset pipeline
config.assets.enabled = true
# Stop precompile from looking for the database
config.assets.initialize_on_precompile = false
# Version of your assets, change this if you want to expire all your assets
config.assets.version = '1.0'
# Fix fonts in assets pipeline
# https://dev59.com/hGw15IYBdhLWcg3wmc4J
config.assets.paths << Rails.root.join('app','assets','fonts')
config.middleware.insert 0, 'Rack::Cache', {
:verbose => true,
:metastore => URI.encode("file:#{Rails.root}/tmp/dragonfly/cache/meta"),
:entitystore => URI.encode("file:#{Rails.root}/tmp/dragonfly/cache/body")
} # unless Rails.env.production? ## uncomment this 'unless' in Rails 3.1,
## because it already inserts Rack::Cache in production
config.middleware.insert_after 'Rack::Cache', 'Dragonfly::Middleware', :images
config.action_mailer.default_url_options = { :host => CONFIG[:email][:host] }
config.action_mailer.asset_host = 'http://' + CONFIG[:email][:host]
end
end
Gem 文件:
source 'http://rubygems.org'
gem 'rails', '3.2.13'
gem 'mysql2'
gem 'dragonfly', '>= 0.9.14'
gem 'rack-cache', :require => 'rack/cache'
gem 'will_paginate'
gem 'dynamic_form'
gem 'amazon_product' # for looking up Amazon ASIN codes of books
gem 'geoip'
gem 'mobile-fu'
gem 'airbrake'
gem 'newrelic_rpm'
gem 'bartt-ssl_requirement', '~>1.4.0', :require => 'ssl_requirement'
gem 'dalli' # memcache for api_cache
gem 'api_cache'
gem 'daemons'
gem 'delayed_job_active_record'
gem 'attr_encrypted'
gem 'rest-client'
gem 'json', '>= 1.7.7'
gem 'carrierwave' # simplify file uploads
gem 'net-scp'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'therubyracer'
gem 'sass-rails', '~> 3.2.3'
gem 'compass', '~> 0.12.alpha'
gem 'uglifier', '>= 1.0.3'
gem 'jquery-fileupload-rails'
end
gem 'jquery-rails'
gem 'api_bee', :git => 'git://github.com/ismasan/ApiBee.git', :ref => '3cff959fea5963cf46b3d5730d68927cebcc59a8'
gem 'httparty', '>= 0.10.2'
gem 'twitter'
# Auth providers
gem 'omniauth-facebook'
gem 'omniauth-twitter'
gem 'omniauth-google-oauth2'
gem 'omniauth-identity'
gem 'omniauth-readmill'
gem 'bcrypt-ruby', "~> 3.0.0" # required for omniauth-identity
gem 'mail_view'
# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'
# Deploy with Capistrano
group :development do
gem 'capistrano'
gem 'capistrano-ext'
gem 'capistrano_colors'
gem 'rvm-capistrano'
# requirement for Hoof, Linux equivalent of Pow
gem 'unicorn'
end
group :test, :development do
gem 'rspec-rails'
gem 'pry'
gem 'pry-rails'
end
group :test do
gem 'factory_girl_rails'
gem 'capybara'
gem 'cucumber-rails'
gem 'database_cleaner'
gem 'launchy'
gem 'ruby-debug19'
# Pretty printed test output
gem 'shoulda-matchers'
gem 'simplecov', :require => false
gem 'email_spec'
gem 'show_me_the_cookies'
gem 'vcr'
gem 'webmock', '1.6'
end
config/environments/production.rb
和config/environments/staging.rb
这两个文件? - Jeremy Greendiff
验证它们是否完全相同?通常这些问题归结为它们需要完全相同,但由于某种原因它们并不完全相同。 - Jeremy Greendiff
,它们确实完全相同。 - andyroberts