7
votes
4answers
428 views

What exactly does it mean that storing “large blobs in the database reduces performance”?

To someone who knows database internals this may be an easy question, but can someone explain in a clear way why storing large blobs (say 400 MB movies) in the database is supposed to decrease ...
3
votes
3answers
195 views

Storing lots of large strings with frequent “appends” and few reads

In my current project, I need to store a very long ASCII string to each instance of a given object. This string will receive an 2 appends per minute and will not be retrieved so frequently. The ...
1
vote
1answer
446 views

NoSQL as file meta database

I am trying to implement a virtual file system structure in front of an object storage (Openstack). For availability reasons we initially chose Cassandra, however while designing file system data ...