Backups are very important for every application, especially if a lot of data is stored in your database. For a website with few updates it is not so important to do backups regularly, you can just take the backup of last week for restoring the site and if there was just one or two updates, you can add them manually afterwards. But if you run a community site with user generated content and a lot of input the topic backup & recovery becomes a lot more important but also complex. If the last backup is from last night you have to consider all the updates that were made in the meantime.

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