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Rails ActiveRecord w/ MySQL Hangs Once Connection Pool Limit is Reached

原文 2009-10-22 21:29:42 0 1 ruby-on-rails/ activerecord

Unless specified, ActiveRecord fires up 4 default connections.

I've noticed if I reload a simple page, which makes at least one ActiveRecord call, 4 times every thing functions normal. However, on the fifth time, it hangs for almost 5 seconds. So, every 5th page load it hangs for 5 seconds.

I upped the default connection pool in my adapter to 8 and now it hangs every 9th page request. It seems like it doesn't reuse connections but instead kills them and regenerates them once the pool limit is reached.

I'm not actually using ActiveRecord with entire Rails stack.

Is there a magical ActiveRecord connection flag which prevents this from happening? Or, is there something else going wrong?

1 answers

Hot damn that was easy...

ActiveRecord::Base.clear_active_connections!

http://coderrr.wordpress.com/2009/01/12/rails-22-activerecord-connection-cleanup/

Sure wish this was something you could configure so you don't have to call it every time.

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Related Question Rails: No connection pool for ActiveRecord::Base Close Rails ActiveRecord Connection Pool How to create a new ActiveRecord Connection Pool with Ruby on Rails? Rails/MySql - amount of database connection pool ActiveRecord::ConnectionNotEstablished: No connection pool for ActiveRecord::Base with mongoid ActiveRecord::ConnectionNotEstablished - No connection pool for X Rails ActiveRecord connection session Rails4: How can I get the number of idle connections in an ActiveRecord connection pool? Connection Pool for rails 5 rails activerecord limit after order

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Rails ActiveRecord w/ MySQL Hangs Once Connection Pool Limit is Reached

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1 answers

solution1 2 2009-10-22 21:51:33

solution1
2 2009-10-22 21:51:33