ParquetCache

ParquetCache()

Cache expression results as Parquet files, re-hashing when source data changes.

Pairs ModificationTimeStrategy with ParquetStorage: results are written as Parquet files on local disk, and the cache key folds in source-data metadata so the cache invalidates automatically when the upstream data changes. Build it with :meth:from_kwargs.

Parameters

Name	Type	Description	Default
source	ibis.backends.BaseBackend	Backend used to write the file on a miss and read it back on a hit. Defaults to xorq’s default backend.	required
relative_path	Path	Subdirectory under the cache root. Defaults to xorq.config.options.cache.default_relative_path (parquet).	required
base_path	Path	Cache root. Defaults to None, which resolves to XORQ_CACHE_DIR.	required