Store the running of a JavaScript file in memory

It seems highly unlikely that achieving the following is possible without expert confirmation:

On page number 1, user and application data is requested as soon as the page loads. Page number 2 utilizes the same script, so requesting the same information would be redundant.

I am aware that browsers cache scripts, but my question pertains to whether they also cache execution (data).

Due to differing layouts, reloading page number 2 via ajax is not feasible.

Answer №1

The script result is not automatically cached by the browser (that would be quite odd), but you have control over it by setting (and checking for) cookies, utilizing the latest local storage capabilities on modern browsers, and more. Keep in mind that with cookies, they are sent to the server with every request, leading to larger requests; if possible, opt for local storage instead.

Answer №2

If you want to store your data in a temporary location, consider using client-side storage options such as localStorage (check out the MDN documentation for more information).

Additionally, the browser itself may cache your request internally, treating it like any other request made by the browser (such as HTML documents or images). Depending on the specifics of your request, including all parameters involved, the browser might utilize a cached version to avoid unnecessary calls. However, keep in mind that caching behavior is subject to usual restrictions and properties, so relying on this behavior is not always guaranteed!

Answer №3

When your webpage has a new URL, the browser will not cache your data automatically.

However, there are ways you can implement caching yourself. One option is to utilize local storage in modern browsers that support HTML5.

Another approach is to design your application as a single-page system with various views and transitions, using AJAX to swap out different parts of the page.

This method is gaining popularity in web development.

If you want to learn more about JavaScript MVC and how to create a client-side controller and views using JavaScript, I recommend checking out "JavaScript Web Applications" by Alex MacCaw. You should also explore frameworks like backbone.js.

Check out this book on Amazon for more information.

Answer №4

In most cases, I would advise against caching the data unless there are significant performance issues that need to be addressed first. It's better to focus on resolving the performance problems rather than resorting to caching as a solution prematurely.

When dealing with cached data, it's important to anticipate and plan for various scenarios such as outdated data or deleted records. Unless the data is static, caching may not even be necessary in the first place.

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