Method invalidate

examples/dogpile_caching/caching_query.py:91–101

Invalidate the cache value represented by a statement.

(self, statement, parameters, opt)

            return None

    def invalidate(self, statement, parameters, opt):
        """Invalidate the cache value represented by a statement."""

        if isinstance(statement, Query):
            statement = statement.__clause_element__()

        dogpile_region = self.cache_regions[opt.region]

        cache_key = opt._generate_cache_key(statement, parameters, self)

        dogpile_region.delete(cache_key)


class FromCache(UserDefinedOption):