Ruby/Rails + Resque throwing「Connection timed out」錯誤

Question

我有一個使用Resque的Ruby Rails應用程序。

Resuqe守護程序在運行一段時間後出現錯誤，並且崩潰。我的第一個猜測是守護進程通常不會訪問MySQL DB（幾個小時），因此我每5分鐘觸發一次訪問數據庫的隊列項。但我仍然得到：

rake aborted! 
Connection timed out 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:204:in `rescue in io' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:202:in `io' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:210:in `read' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:84:in `block in call' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:183:in `block (2 levels) in process' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:287:in `ensure_connected' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:173:in `block in process' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:248:in `logging' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:172:in `process' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis/client.rb:84:in `call' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis.rb:715:in `block in get' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis.rb:36:in `block in synchronize' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis.rb:36:in `synchronize' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-3.0.2/lib/redis.rb:714:in `get' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/redis-namespace-1.2.1/lib/redis/namespace.rb:257:in `method_missing' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/resque-1.23.0/lib/resque/worker.rb:517:in `job' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/resque-1.23.0/lib/resque/worker.rb:450:in `unregister_worker' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/resque-1.23.0/lib/resque/worker.rb:169:in `rescue in work' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/resque-1.23.0/lib/resque/worker.rb:129:in `work' 
/usr/local/rvm/gems/ruby-1.9.3-p194/gems/resque-1.23.0/lib/resque/tasks.rb:36:in `block (2 levels) in <top (required)>' 
/usr/local/rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `eval' 
/usr/local/rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `<main>' 
Tasks: TOP => resque:work 
(See full trace by running task with --trace) 

我把一些日誌文件輸出在我的方法，任何非同步觸發任務，但是看起來好像連接超時而沒有執行我的任何應用程序代碼發生時調用。

下一步該怎麼辦？

Answer 1

根據這裏的日誌，與redis的連接丟失，而不是mysql。