Prioritize establishing the connection before guiding the user to a new destination

I have a brilliant idea for creating something amazing, but I'm uncertain if it's feasible. Here is a basic example of an ajax function that could potentially establish a connection with a server...

function getFakePage(userId)
{
    var ajaxObject, path, params;

    ajaxObject = getAjaxObject();
    params = "?userId=" + userId
    path = getInternalPath() + "someServlet" + params;

    ajaxObject.open("GET", path, true);
    ajaxObject.send();

    // Additional code for ready state change here
}

Picture this scenario...

https://localhost:8443/Instride/user/1/admin

Now, suppose I want to utilize JavaScript to redirect the user to the above URL. Typically, one would simply do this...

window.location = "https://localhost:8443/Instride/user/1/admin";

However, I have an innovative concept to develop a JavaScript function (without using JS frameworks) that could seamlessly blend the ajax and window.location codes. Essentially, I aim to create a connection with the server through ajax, transmit a specified URL to a servlet on the server, and then redirect the user to that URL. This way, while the user is connecting to my server from any location worldwide, they will see a loading icon instead of a blank white page.

Therefore, to clarify my objective: I do not wish to include window.location within the success of my ajax function (to avoid two round trips), nor do I intend to return a large HTML chunk for the requested resource and append it to the page. My goal is to establish a server connection via ajax, send the desired URL to a servlet, and find a way to direct the user accordingly. Is this even achievable?

I understand that some may find this concept unconventional, but it holds significance especially for international users with slow internet connections experiencing prolonged loading times. If this idea is plausible, I would greatly appreciate any insights or advice. Thank you very much!

Answer №1

To begin with, I must emphasize the importance of identifying and resolving the root cause of slowness for the best solution.

Regarding your query, it is indeed possible to implement. You could even integrate it into an existing application, although it may not result in a visually appealing outcome and may introduce its own set of challenges. Nevertheless, here are the steps:

  1. The browser initiates an ajax call to the cache service requesting "somepage.html"
  2. A loading icon is displayed as the browser processes the request
  3. The server generates "somepage.html" and stores it in a temporary cache (consider using a library like ehcache with file backing depending on the cache size)
  4. The server responds to the ajax request with the ID of the cached page
  5. The browser then redirects to "somepage.html?cacheId={cacheId}" using the ID obtained from the ajax call
  6. A server-side filter checks if a cached version of the page can be served instead of the actual page, thereby expediting the request

However, it is more effective to optimize the new page to load swiftly with a loading icon while handling resource-intensive tasks through ajax.

Answer №2

When it comes to making a choice between an AJAX request and a location change, you can't have both at the same time. It's important to decide which method best suits your needs - either return data and update content on the current page, or load a brand new page altogether.

Trying to combine both actions doesn't really serve a purpose. However, if you're looking for stateful URLs that reflect the displayed content, even if it's fetched via AJAX, you can make use of the URL's hash part that can be freely modified using window.location.hash. Some modern browsers even support changing the entire URL without triggering a page reload, and I've personally found success using the hash in this way.

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