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The current code is unnecessarily complicated. This PR simplifies things so that backends can include a custom module through an
apply_module
hook. This allows KeyValue and Table backends to modify the Cache module they use just slightly to achieve the same result.A module builder called
TranslationCacher
is shared by all cacheing strategies to cache reads; the only difference is which method is cached: in the default Cache module,read
is cached; in KeyValue and Table backends,translation_for
is cached (so that the translation record itself is cached, rather than the translation value).