What is the most efficient way to transfer substantial data from a route to a view in Node.js when using the render method

Currently, I have a routing system set up in my application. Whenever a user navigates to site.com/page, the route triggers a call to an SQL database to retrieve data which is then parsed and returned as JSON. The retrieved data is then passed to the view using the following code:

res.render('route/to/view', {data: result, moredata: resultTwo})

The issue arises when dealing with large datasets as it significantly delays the rendering process, impacting the overall performance of the page. I have noticed that by reducing the dataset size, the speed at which the page loads increases. While I acknowledge that how the data is displayed also plays a role in performance, my main focus is on optimizing the speed of passing data from the route to the view.

My question is whether breaking down the dataset into smaller chunks for passing would be more efficient than transferring one large chunk at once. Is gradual passing of small chunks the only solution to improve this process?

Answer №1

Transferring the data to the view is not necessarily slow -- it may be that the template engine is just taking some time to process the information you provided. The data remains in memory, so there is no need for a 'copy' operation.

To enhance the speed of this process, consider using techniques like AJAX or websockets.

Here's an example workflow:

  • Initiate a database request to retrieve a small portion of the total items (let's say 10).
  • Send these items to the view and display them promptly to the user.
  • Implement AJAX code within the view that sends an asynchronous GET request to the server to fetch the remaining items.
  • Update the webpage with the newly obtained data.

Opting for this method can improve the handling of large datasets, giving users the impression of quick response times even if the underlying processes are somewhat sluggish -- resulting in swift page loads and rapid data display.

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