Why don’t we write a database file system? Isn’t a file system practically a database already? Isn’t layering an OS between the data and the database application slowing things down?
In: Engineering
The short answer is they have different use cases. A JFS doesn’t care about most of the ACID properties of a database. It doesn’t need to optimize for queries across the data or enforce locking to the degree that a database does, JFS’s also do not guarantee data integrity because they do not need to, they only care about file metadata.
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