我有一个带有ActionCable和BackgroundJob的应用程序在localhost上运行良好，但是在heroku上它只运行了几秒钟，然后应用程序将崩溃。这是heroku日志：
Jul 24 11:25:41 example app/web.1: Started GET "/" for 188.175.27.65 at 2016-07-24 18:25:40 +0000
Jul 24 11:25:41 no404 app/web.1: Processing by WelcomeController#index as HTML
Jul 24 11:25:41 no404 app/web.1: Rendering welcome/index.html.erb within layouts/application
Jul 24 11:25:41 no404 app/web.1: Rendered links/_new.html.erb (13.0ms)
Jul 24 11:25:41 no404 app/web.1: Rendered pro_versions/_button_pro_version.html.erb (0.7ms)
Jul 24 11:25:41 no404 app/web.1: Rendered welcome/index.html.erb within layouts/application (17.0ms)
Jul 24 11:25:41 no404 app/web.1: Rendered layouts/_navbar.html.erb (0.6ms)
Jul 24 11:25:41 no404 app/web.1: Rendered layouts/_footer.html.erb (0.4ms)
Jul 24 11:25:41 no404 app/web.1: Completed 200 OK in 56ms (Views: 30.1ms | ActiveRecord: 0.0ms)
Jul 24 11:25:41 no404 app/web.1: Started GET "/cable" for 188.175.27.65 at 2016-07-24 18:25:41 +0000
Jul 24 11:25:41 no404 app/web.1: Started GET "/cable/" [WebSocket] for 188.175.27.65 at 2016-07-24 18:25:41 +0000
Jul 24 11:25:41 no404 app/web.1: Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
Jul 24 11:25:41 no404 app/web.1: /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/uri/rfc3986_parser.rb:67:in `split': bad URI(is not URI?): ENV["REDISTOGO_URL"] (URI::InvalidURIError)
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/uri/rfc3986_parser.rb:73:in `parse'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/uri/common.rb:227:in `parse'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/uri/common.rb:714:in `URI'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/redis-3.3.1/lib/redis/client.rb:404:in `_parse_options'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/redis-3.3.1/lib/redis/client.rb:81:in `initialize'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/redis-3.3.1/lib/redis.rb:51:in `new'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/redis-3.3.1/lib/redis.rb:51:in `initialize'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/actioncable-5.0.0/lib/action_cable/subscription_adapter/redis.rb:11:in `new'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/actioncable-5.0.0/lib/action_cable/subscription_adapter/redis.rb:11:in `block (2 levels) in <class:Redis>'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/actioncable-5.0.0/lib/action_cable/subscription_adapter/redis.rb:51:in `redis_connection'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/actioncable-5.0.0/lib/action_cable/subscription_adapter/redis.rb:36:in `redis_connection_for_subscriptions'
Jul 24 11:25:41 no404 app/web.1: from /app/vendor/bundle/ruby/2.3.0/gems/actioncable-5.0.0/lib/action_cable/subscription_adapter/redis.rb:145:in `block in ensure_listener_running'
Jul 24 11:25:41 no404 heroku/web.1: Process exited with status 1
Jul 24 11:25:42 no404 heroku/router: at=info method=GET path="/cable" host=no404.herokuapp.com request_id=5aafa828-3669-4522-a1f2-78bbdeb6850d fwd="188.175.27.65" dyno=web.1 connect=0ms service=131ms status=101 bytes=174
Jul 24 11:25:43 no404 heroku/router: at=error code=H10 desc="App crashed" method=GET path="/cable" host=no404.herokuapp.com request_id=28a44de1-ec62-4976-bb48-76d1f901b350 fwd="188.175.27.65" dyno=web.1 connect=0ms service= status=503 bytes=
2016-07-24T17:27:48.829717+00:00 app[worker.1]: Delayed::Backend::ActiveRecord::Job Load (1.5ms) UPDATE "delayed_jobs" SET locked_at = '2016-07-24 17:27:48.827444', locked_by = 'host:5bb7aa42-3417-4fbc-a053-fcc4f125058a pid:3' WHERE id IN (SELECT "delayed_jobs"."id" FROM "delayed_jobs" WHERE ((run_at <= '2016-07-24 17:27:48.826731' AND (locked_at IS NULL OR locked_at < '2016-07-24 13:27:48.826815') OR locked_by = 'host:5bb7aa42-3417-4fbc-a053-fcc4f125058a pid:3') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 1 FOR UPDATE) RETURNING *
我的Procfile
web: bundle exec puma -p $PORT
worker: rake jobs:work
一些宝石：
gem 'delayed_job'
gem 'delayed_job_active_record'
gem 'redis'
gem 'puma'
gem 'rails_12factor'
生产：
Rails.application.configure do
config.cache_classes = true
config.eager_load = true
config.consider_all_requests_local = false
config.action_controller.perform_caching = true
config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
config.assets.js_compressor = :uglifier
config.assets.compile = false
config.assets.digest = true
config.log_level = :debug
config.i18n.fallbacks = true
config.active_support.deprecation = :notify
config.log_formatter = ::Logger::Formatter.new
config.active_record.dump_schema_after_migration = false
config.action_cable.url = "wss://example.herokuapp.com/cable"
config.action_cable.allowed_request_origins = ['https://example.herokuapp.com', 'http://example.herokuapp.com']
config.serve_static_assets = true
end
Redis.rb
REDIS = Redis.new(Rails.application.config_for("cable"))
我使用的是RedisToGo插件