Requests-cache is a useful Python module for caching API requests, particularly beneficial when working with APIs like the Github API that have rate limits. The author discusses their experience using this module while experimenting with the Github API to track changes to a repository's forks, highlighting the ease of implementation by demonstrating the installation and setup process. The module allows for efficient caching by reducing the need for repetitive API calls, thereby saving on call limits and speeding up testing and development. The author also notes the importance of checking API documentation for built-in caching options, such as Github's Conditional requests that do not count against rate limits. The text emphasizes the practical benefits and simplicity of using Requests-cache, encouraging further exploration and customization, such as setting a specific output directory for cache files.