module FasterCacheKeys
# A faster version of Rails' "cache_key" method.
#
# Rails' default "cache_key" method uses all kind of complex logic to figure
# out the cache key. In many cases this complexity and overhead may not be
# needed.
#
# This method does not do any timestamp parsing as this process is quite
# expensive and not needed when generating cache keys. This method also relies
# on the table name instead of the cache namespace name as the latter uses
# complex logic to generate the exact same value (as when using the table
# name) in 99% of the cases.
def cache_key
"#{self.class.table_name}/#{id}-#{read_attribute_before_type_cast(:updated_at)}"
end
end