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CachingKeyGenerator is a wrapper around KeyGenerator which allows users to avoid re-executing the key generation process when it's called using the same salt and key_size.

Methods
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Class Public methods
new(key_generator)
# File activesupport/lib/active_support/key_generator.rb, line 29
def initialize(key_generator)
  @key_generator = key_generator
  @cache_keys = Concurrent::Map.new
end
Instance Public methods
generate_key(*args)

Returns a derived key suitable for use.

# File activesupport/lib/active_support/key_generator.rb, line 35
def generate_key(*args)
  @cache_keys[args.join] ||= @key_generator.generate_key(*args)
end