Exception not caught by rescue block

Question

The problem is in relation to the radis-rb gem.

The exception is not caught by my rescue block and my app goes down.

My code:

begin
  redis = Redis.new 
  puts "WTF?"
rescue Exception
  puts "Exception"
end

If redis is down, the message WTF? is exposed.

It happens with or without the Exception statement.

Why is the exception not raised to my rescue block?

Answer 1

I have solved the problem myself (with help from the community and comments).

The exception occurred in IRB only.

The reason of one is IRB's inspect call when IRB try to print result of Redis.new.

In the script (not IRB), the exception doesn't occur because Redis.new does not raise an exception if the Redis service is down.

This question helped to solve my problem.