Ruby on rails Heroku、Rails、Resque、Redis：所有作业都因为Errno:：ETIMEDOUT而失败

我在heroku上有一个rails应用程序，它使用Resque.enqueu来安排使用Redis和redistogo的后台作业

过去工作正常，但我现在注意到，他们都失败了一段时间（几个星期，100%的工作）

我得到的错误是：

异常Errno:：ETIMEDOUT错误连接超时-连接（2）

和堆栈跟踪：

> /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/net/http.rb:878:in `initialize'
> /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/net/http.rb:878:in `open'
> /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/net/http.rb:878:in `block in
> connect' /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/timeout.rb:52:in
> `timeout' /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/net/http.rb:877:in
> `connect' /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/net/http.rb:862:in
> `do_start' /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/net/http.rb:851:in
> `start' /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/net/http.rb:1373:in
> `request' /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/net/http.rb:1131:in
> `get'
> /app/vendor/bundle/ruby/2.0.0/gems/activeresource-4.0.0/lib/active_resource/connection.rb:121:in `block in request'
> /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.1/lib/active_support/notifications.rb:164:in
> `block in instrument'
> /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.1/lib/active_support/notifications/instrumenter.rb:20:in
> `instrument'
> /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.1/lib/active_support/notifications.rb:164:in
> `instrument'
> /app/vendor/bundle/ruby/2.0.0/gems/activeresource-4.0.0/lib/active_resource/connection.rb:118:in `request'
> /app/vendor/bundle/ruby/2.0.0/gems/shopify_api-4.0.6/lib/active_resource/connection_ext.rb:13:in `request_with_detailed_log_subscriber'
> /app/vendor/bundle/ruby/2.0.0/gems/activeresource-4.0.0/lib/active_resource/connection.rb:82:in
> `block in get'
> /app/vendor/bundle/ruby/2.0.0/gems/activeresource-4.0.0/lib/active_resource/connection.rb:216:in `with_auth'
> /app/vendor/bundle/ruby/2.0.0/gems/activeresource-4.0.0/lib/active_resource/connection.rb:82:in
> `get'
> /app/vendor/bundle/ruby/2.0.0/gems/activeresource-4.0.0/lib/active_resource/custom_methods.rb:57:in
> `get'
> /app/vendor/bundle/ruby/2.0.0/gems/shopify_api-4.0.6/lib/shopify_api/countable.rb:4:in
> `count' /app/app/models/shop.rb:263:in `unscanned_customers'
> /app/app/models/shop.rb:230:in `shopify_customers'
> /app/app/models/shop.rb:144:in `bulk_scan'
> /app/app/workers/bulk_scanner.rb:16:in `perform'

我在想，这可能与没有正确连接Redis或redistogo有关。以下是我拥有的相关初始化器代码：

resque.rb：

Resque.redis = RedisConnection.connection

redis_connection.rb：

class RedisConnection
  def self.close
    connection.quit
  end

  def self.connection
    @connection ||= new_connection
  end

  def self.new_connection
    uri = URI.parse(ENV['REDISTOGO_URL'] || 'redis://localhost:6379/')

    Redis.new(host: uri.host,
              port: uri.port,
              password: uri.password,
              thread_safe: true,
              :timeout => 1)
  end
end

---

如果在我的应用程序中调用Resque.redis或@connection，它将返回一个redis实例。还有什么会导致此连接错误？哪里可以进行故障排除？

查看回溯，是否可能是Shopify API连接超时？ 看起来

unscanned_customers

应该是一个可计数的Shopify集合，当试图检索客户时就会出现问题

我将在这里开始调试：

'count'/app/app/models/shop.rb:263:in
“未扫描的客户”

此外，我将尝试使用专用应用程序API密钥和密码从服务器连接到Shopify：

shop_url = "https://#{API_KEY}:#{PASSWORD}@SHOP_NAME.myshopify.com/admin"
ShopifyAPI::Base.site = shop_url

如有需要，请参阅Shopify API以了解更多详细信息

这将有助于隔离连接问题

干杯