Lorsqu'une application rencontre certains problèmes, il peut être nécessaire de vider son cache. Mais qu'est-ce que c'est réellement, et comment l'effacer ? On vous explique tout.

On Android, each app has a dedicated space to store cache, but what is it for? Why is it necessary to erase the cache from time to time and when does it need to be emptied? So many questions that will find answers here.

What is an application's cache?

The cache of an application is the memory space allocated to it in order to store easily accessible information in order to speed up its search when the user needs it. For example, on Instagram, when you open the app, the photos you fly over in your wire cache to reload them directly at the next opening of the application.

In this way, each application manages the data it caches in order to streamline the user experience. Usually, it also takes care of removing the unnecessary cache as it progresses. Loading a photo seen in 2017 more quickly would not help you, for example, so you Don't need to cache it.

Why empty the cache of an Android app?

Technically, applications manage their cache themselves, but it may be necessary to remove the cache of an application manually at times. This is for a number of reasons:

However, it is not mandatory to remove the cache from your applications and it is even advisable not to do so too often. In addition, it is better to avoid, like plague, applications that propose to automatically clean your files.

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How do I empty the cache of an Android app?

To clear the cache of a particular Android application, it is very simple:

1. Ouvrez les paramètres du téléphone
2. Rendez-vous dans la section « Applications » (selon la marque de votre smartphone, elle peut porter un autre nom, comme « Applis et notifications » par exemple)
3. (Optionnel) Cliquez sur « Afficher les xxx applications » si votre smartphone ne les affiche pas par défaut (Google, OnePlus…)
4. Cliquez sur l’application dont vous souhaitez effacer le cache
5. Rendez-vous dans la section « Stockage » (selon la marque de votre smartphone, elle peut porter un autre nom, comme « Espace de stockage et cache » par exemple)
6. Cliquez sur le bouton « Vider le cache«

Warning: if at the last step you click the "clear storage" button, you will delete all data from the application. This includes cache, but also data you might want to keep, such as login identifiers, game backups, etc.

It may also be necessary to force the application to stop before emptying the cache in certain situations to prevent current files from recovering immediately. If you want to load a new design and the application is still running in the background with the old one, emptying the cache will certainly not help, for example.

How do I clear the entire Android cache at once?

If you have a bigger problem, you may want to empty the entire cache of your smartphone at once. The handling is a little more technical as it requires going into a hidden menu, but not much more complicated.

To do this, start by turning off your phone completely and then turn it back on by holding the Power key and the volume down key. This way you will get to the Recovery menu of the smartphone. To move around, you need to use the volume keys to go up and down in the menus and the on / off key to validate.

First choose the language of the menu (normally there should be no French, but you will find your way back in English). Then select the wipe data and cache option, then wipe cache. Be careful not to get the wrong option, others will delete either all the data on your smartphone or all your personal data (photos, music, etc.).

Validate the cleaning of the cache by choosing Yes, then restart your phone with the reboot option.

Here's a little tip that should fix a lot of problems on your smartphone. Note, however, that if you were looking first and foremost to free up memory space on your Android device, there are many other solutions.

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