def get_cache_key(self, filename):
        return '/'.join(filter(None, [self.config.s3_cache_prefix, filename]))
Compose an S3 cache key based on :attr:`.Config.s3_cache_prefix` and the given filename.
dataset/ETHPy150Open paylogic/pip-accel/pip_accel/caches/s3.py/S3CacheBackend.get_cache_key