Identify the specific tab that initiated the request

Here's a puzzling question that may not have a straightforward solution, but I'm willing to give it a try. Recently, I developed a brilliant one-page application where each open tab "registers" itself with the server upon startup, indicating its status as an "active" tab.

Now, whenever user A makes changes to XYZ in the workspace, all tabs within that workspace receive a notification informing them of the update. This triggers a reload for all clients, ensuring they are promptly updated. Currently, this is achieved through polling, but once everything is running smoothly, I plan to implement faster solutions like WS or Socket.io.

The issue at hand: every tab receives the notification, even the one that initiated the change! (resulting in unnecessary updates for an already refreshed screen)

I need a way for the server to identify the specific tab that triggered the request. Keep in mind, a user could have multiple tabs open simultaneously, so when they modify XYZ, all tabs should be notified except for the one responsible for the original change.

Currently, I include the workspace ID in every Ajax request since a user might be logged in with access to various workspaces simultaneously.

  • Solution 1: Include both the workspace ID and tab ID in each request
  • Solution 2: Utilize only the tab ID for requests, allowing the app to determine the workspace ID based on the tabID
  • Solution 3: ???? Any suggestions?

Any innovative ideas to tackle this challenge?

Answer №1

Instead of burdening the server with determining which tabs need change notifications, an alternative approach would be for the tab that initiated the changes to simply disregard the notification.

There are two possible methods to achieve this:

  • Upon making changes, a tab can temporarily ignore all notifications for a short period (unless multiple tabs make changes simultaneously).
  • The tab can generate a unique "change id" when sending changes to the server. The broadcasted change notification includes this id, allowing the sending tab to recognize it and ignore the notification.

Answer №2

One potential solution is to explore the HTML5 Visibility API alongside utilizing the window.onfocus and window.onblur events as a backup plan. By checking if the page is currently visible or active before updating it, you can optimize user experience and performance.

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