Data Cache

As of version 1.4.22, data caching is introduced in order to reduce the time required to run multiple backtests/permutations. The data caching will store the requested datasource_topic and candle_topic data in your local machine.
By default, this functionality is opted out.
This functionality can be accessed by passing in the cache_path parameter in RuntimeConfig prior to starting a backtest.

The cache_path field accepts a str value that is just the path to the cache directory. For an example:

config = RuntimeConfig(
    ...
    cache_path: "Users/me/cache_directory",
    ...
)

or even

config = RuntimeConfig(
    ...
    cache_path: "./CACHE_DIR",
    ...
)
)

The data will be fetched once and stored in the provided directory path. If no data is found in the directory provided, a new caching process will begin. Take note as this could use up significant disk space!