Applying caching using Flask-Caching

Flask-Caching provides enhanced caching support for views, data rendered by Jinja2 templates, and the custom functions, such as repository or service functions, of any Flask application. It also supports built-in caching of Flask and allows you to customize a cache through the BaseCache class from its flask_caching.backends.base module.

Before we can configure Flask-Caching, we must install the flask-caching module via the pip command:

pip install flask-caching

Then, we must register some of its configuration variables in the configuration file, such as CACHE_TYPE, which sets the cache type suited for the application, and CACHE_DEFAULT_TIMEOUT, which sets the caching timeout. The following are the applications’ caching configuration variables declared in their respective config-dev.toml files:

CACHE_TYPE = "FileSystemCache"
CACHE_DEFAULT_TIMEOUT = 300
CACHE_DIR = "./cache_dir/"
CACHE_THRESHOLD = 800

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