Cache manager: explanation in 6 points!

gestionnaire cache http

The http cache manager improves the general functioning of your site. It stores your data on the browser to make your next browsing session faster.

The cache and cache manager: find out more

A cache is a set of responses to requests made previously on a web page and which have been previously collected. An identification key is attached to each of these responses, each key is different.

In the event that a request corresponds to an identification key already identified, then it provides an instantaneous response without calling the origin server again. It therefore facilitates your navigation and increases its speed..

The cache manager supports updates as well as the deletion of responses in cache storage. It is made available to users in the action launched, before spreading the request to the server.

Different types of existing caches

We have two categories of caches:

  • private caches,
  • shared caches.

They both have different features and benefits.

The private cache

It corresponds to a single user. It contains documents downloaded via http by a particular user. This facilitates the future manipulation because you access the previously visited documents by clicking on “back”. Off-line browsing will also take place since the temporary backup of the content visited has been made.

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The shared cache

It stores the responses of previous requests so that they can then be used by several users in a future session.

Why http caching?

Your site includes a multitude of contents, such as multimedia files: images, video, audio, but also scripts and fonts.

These are often large and take a long time to download for each request. Therefore, the loading time of your blog or site will increase.

Your users will inevitably be frustrated and your site will be less successful. It will not be very good for your business and your reputation.

Faced with this, for a faster loading time, you need to reduce the resources to download and thus decrease the response time of user requests. Http caching will help you do this.

How the http cache manager works

The http caching protocol manages coexisting caches: browser, CDN and origin.

1 / In the browser cache, the system instantly stores browser data. This avoids downloading resources for a future connection to the session.

2 / In the CDN cache, the system saves the content resources on the networks of the cache servers in different storage locations.

3 / The original cache, for its part, keeps the result of an operation that takes more response time than the others. This prevents the reproduction of waiting and processing times. This is the case when generating a page or improving image quality. These are operations that use multiple server content.

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Thanks to http caching, the number of query responses per second increases significantly. It goes from 15 requests per second to more than 2,600. Moreover, the response time drops to less than 0.40ms, if it was more than 60ms previously.

It is the cache manager service that comes into play in all of these actions. It retrieves data from the cache, not from the database disk, but from online data storage memories, such as cloud memories for example. It manages data logging and stores it intelligently making your site more responsive.

The elements to cache http

For a smooth visit to your site, there are some basic elements to http caching, including:

  • logos and brand images,
  • media files,
  • scripts and stylesheets.

These are quite large items that require a higher load time. Therefore, caching avoids a reload on each request.

Regarding HTML pages, content with authentication cookies, and image rotations: it is not advisable to cache them.

The advantages of the http cache manager

Improving the performance of your site is the first asset of the http cache manager. The speed of the memory allows a more responsive reading of the data. Your page will load faster.

This is a real advantage because studies confirm that a user leaves a page if it takes more than three seconds to load, a minimal amount of time but which risks losing customers.

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Next, it warns against latency due to the high number of users. Your site may have a peak during which several users will be on your site at the same time.

As a result, the load on your database increases dramatically and the operation of the site may be affected. The http cache manager allows you to have a very high memory cache throughput to reduce or even eliminate this risk.

The availability of content even offline is also an undeniable advantage. Thanks to the cache memory, the user accesses the responses to requests previously sent. The content is accessible and in a simplified way.

Another plus: reduced backend costs and charges. Caching allows you to respond to the maximum number of operations, access or exit. Database costs are more reasonable.

In the case where the primary database is billed by debit, the reduction rate can go up to 12%. On the other hand, the database read load is redirected to memory. Therefore, the risk of crashing or crashing decreases.

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