## Optimization of caching: why are Last-Modified headlines needed and code 304 on the site

In the modern world, where the speed of downloading the site is one of the key success factors, the optimization of caching is particularly relevant.Last-Modified headlines and answer code 304 play an important role in this process, allowing to significantly speed up the loading of pages for repeated visits.

Introduction:

At each user contacting the site, the browser sends a request to the server, asking all the necessary files (HTML, CSS, JavaScript, etc.).If the contents of the page have not changed from the last visit, the server can return the response code 304 (not modified), signaling the browser that the data is already available in its cache.This avoids unnecessary requests and accelerates the loading of the page.

The Last-Modified title indicates the date and time of the last change in the file on the server.The browser compares this date with the date stored in his cache.If they coincide, then code 304 is returned.

Review of Last-Modified module for Opencart:

There is a special module for the Opencart platform that automates work with Last-Modified headings and the answer code 304. The module presented on the website https://opencart-help.net/moduli-opencart/seo-moduli/last-modified-dlya-open CART.html, allows:

* Automatically generate Last-Modified headlines for all pages of the site.
* Set the date and time format in the header.
* Exclude certain pages or types of files from module processing.
* View the log of the module.

The use of this module allows us to significantly simplify the process of tuning the caching on the Opencart website, eliminating the need for manual editing code.


Advantages of using Last-Modified headings and code 304:

* Acceleration of pages loading for repeated visits.
* Reducing the load on the server.
* Increase in the SEO-optimization of the site.
* Improving user experience.



In the modern competitive world, every little thing matters.The Last-Modified module for Opencart is a simple and effective way to optimize caching on your site, which will lead to a faster loading of pages, improved SEO-optimization and increased user satisfaction.

We strongly recommend that you purchase this module and use all its advantages.