imf_reader.cache.dataframe
==========================

.. py:module:: imf_reader.cache.dataframe

.. autoapi-nested-parse::

   DataFrameCache decorator for disk-backed persistent caching of function results.

   Wraps a function to cache its return value under <root>/<sublayer>/. DataFrame
   results are stored as parquet; everything else as pickle. The wrapped function
   exposes .cache_clear() (zero-arg, returns None) and allows arbitrary attribute
   assignment on the wrapper (e.g. fetch_data.last_version_fetched = ...).



Attributes
----------

.. autoapisummary::

   imf_reader.cache.dataframe.logger


Functions
---------

.. autoapisummary::

   imf_reader.cache.dataframe.dataframe_cache


Module Contents
---------------

.. py:data:: logger

.. py:function:: dataframe_cache(*, ttl: datetime.timedelta, sublayer: str) -> Any

   Decorator factory that caches a function's return value to disk.

   :param ttl: How long cached results are valid.
   :param sublayer: Subdirectory under the cache root (e.g. "weo_api", "sdr").

   :returns: Decorator that wraps the target function.