reply to this using an academic voice: Caching contributes to the performance and offline functionality in a few key ways. Caching allows for the availability of information without requiring an internet connection such as applications being accessible and usable while not connected through Wi-Fi or mobile data use. It provides the ability to provide seamless updates to PWAs. Caching also improves performance because it can bridge gaps in connectivity so that the user is not aware of these lapses in service or signal strength. Caching also allows for server load to be reduced due to the use of offline content serving so less impact is made on the servers from the application. The cache interface's role in service workers is to be able to store assets, provide offline functionality, assist with updates, reduce server load and allow developers to improve their programs by designing with the cache interface in mind. The methods it uses is add, addAll, match, matchAll, put, delete, and keys. This allows information to be retrieved, stored, removed, match, and provide cached keys. The Cache-Only strategy for PWAs means that all requests go through cache rather than using the network for requests. This means that the application trying to retrieve information is checking the cache before anything else. If it is found, it shows it, and if it is not available it fails. A scenario that uses a cache only strategy could be a mobile game that allows you to play the game without havin