Working with the JavaScript Cache API

The Cache API is a powerful tool for storing and retrieving network requests and responses during run-time, which is particularly useful for progressive web applications (PWAs) that aim to provide a native-like experience on mobile devices, even offline. Integral to PWAs, service workers run in the background and utilize the Cache API to manage network resources efficiently. This API supports various CRUD operations, including creating, adding, retrieving, and deleting cache entries, thus allowing developers to cache essential URL-addressable resources such as files, assets, and API responses. The tutorial highlights the importance of checking for Cache API support in browsers and provides methods like `add`, `addAll`, `put`, `match`, and `delete` for effective cache management. While the `add` and `addAll` methods are subject to CORS constraints, `put` offers more control over responses, allowing developers to handle server response statuses flexibly. The article emphasizes the security feature that binds cache to the current origin, preventing access from other origins, and provides a code repository for practical implementation.