I'm making some institutional sites simple, static, and want to put some customizations. These customizations will be few and simple, and will only be accessed by a user. But you will have one or other information that will be changed by more than one user.
I know that sqlite is good for this kind of thing, but I did not want to depend of other libs. And it does not have to be a database to apply normalization.
I thought of a plain text file with some sort of lock with file, but sure enough, somebody already implemented and did with good practices.
I want to use this in a shared hosting that has disk access, and I do not want to set up a database, because it's something very simple, and I want an easy deployment.