`

# What is retry in Ruby exceptions?

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In Ruby, the retry keyword is used within a rescue block to repeat the execution of the code in the begin block from the start. This can be particularly useful when you want to handle transient errors by attempting the operation again.

Here’s a simple example:

begin
  retries ||= 0
  puts "Attempt ##{retries}"
  # Simulate an error
  raise "An error occurred"
rescue
  retries += 1
  retry if retries < 3
end
In this example:
  • The code inside the begin block is executed.
  • If an exception is raised, the rescue block is executed.
  • The retry keyword causes the begin block to be executed again.
  • This process repeats until the condition retries < 3 is no longer met, preventing an infinite loop.
Keep in mind that retry will restart the entire begin block, so any state changes or side effects will also be repeated. This can be useful for handling temporary issues, but it requires careful consideration to avoid unintended consequences.