Handling AJAX calls in mobile web applications with varying network conditions
I need some guidance on I've looked through the documentation and I'm still confused about Trying to implement AJAX functionality in a mobile web application that's expected to work seamlessly across different network conditions... The goal is to fetch user data from an API and display it dynamically on the client side, but I'm facing challenges with responsiveness and performance, especially in low-bandwidth scenarios. In my current setup, I'm using Axios for making requests, and I've configured it to handle JSON responses. Here's a snippet of what I have so far: ```javascript axios.get('https://api.example.com/userdata') .then(response => { this.userData = response.data; }) .catch(error => { console.error('Error fetching data:', error); }); ``` The application sometimes responds too slowly when the network is unstable. I’ve implemented a loading spinner to enhance the user experience, but the delay in data retrieval is still noticeable. To improve things, I attempted to implement a retry mechanism using Axios interceptors like this: ```javascript axios.interceptors.response.use(null, error => { const { config, response } = error; if (response && response.status === 500) { return axios(config); } return Promise.reject(error); }); ``` While this works to some extent, it doesn’t seem to alleviate the initial latency on first load. I considered using a Progressive Web App (PWA) approach hoping it would enhance performance, but I'm not sure how the AJAX requests will behave in that context. Another aspect I’m struggling with is handling data caching effectively. I’ve read about using localStorage for caching API responses, which could mitigate the need for multiple requests, but not sure how to structure this. Any insights on best practices for managing AJAX requests in a mobile environment, particularly when dealing with varying network conditions? Also, are there any specific libraries or techniques that could assist in optimizing the performance of AJAX calls on mobile devices? Looking for both code examples and architectural recommendations. I'm working on a service that needs to handle this. My development environment is macOS. Any feedback is welcome!