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4
votes
2answers
1k views

Document-oriented vs Column-oriented database fit

I have a data-intensive application that desperately needs a database make-over. The general data model: There are records with RIDs, grouped together by group IDs (GID). The records have arbitrary ...
2
votes
1answer
168 views

Scuttlebutt Reconciliation in the paper “Efficient Reconciliation and Flow Control for Anti-Entropy Protocols”

I am reading the paper "Efficient Reconciliation and Flow Control for Anti-Entropy Protocols"! , I couldn't clearly understand Section 3.2 "Scuttlebutt Reconciliation". Here I extract out some ...
6
votes
3answers
512 views

My Cassandra consultant left me and now I'm thinking about reverting to mysql [closed]

I run a middle size community and some time ago I started to develop social capabilities such as follow, status update, wall etc. For some reason i thought that Cassandra was the right tool for the ...
5
votes
5answers
512 views

Should I use a relational datamodel or Cassandra with ColumnFamily based indexes?

Currently we are working on some storage problems for log data from various servers and communication message logs (HTTP(S), XMPP). There will be many write operations and for read operations we will ...
2
votes
3answers
596 views

Scalable distributed file system for blobs like images and other documents [closed]

Cassandra & HBase both do not efficiently support storage of blobs like images. Storing directly on HDFS stresses the Namenode because of huge number of files. Facebook uses Haystack for images ...
4
votes
2answers
349 views

Using HBase or Cassandra for a token server

I've been trying to figure out how to use HBase/Cassandra for a token system we're re-implementing. I can probably squeeze quite a lot more from MySQL, but it just seems it has come to clinging on to ...
1
vote
2answers
488 views

what is storing data in constant space?

"bloom filter allows us to store data in constant space" Can someone explain what exactly does that sentence means?
2
votes
3answers
327 views

Where should I include comments in my “self-documenting code”?

I'm currently developing a web-app by myself and have made it a point to use descriptive variable and method names (sometimes at the expense of brevity) in order to minimize commenting. The plan was ...
8
votes
6answers
819 views

Learn a NoSQL or become a badass with traditional RDMS - Where is/will the work be? [closed]

New Question Version: I've got the opportunity to spend 3 months getting good at something, its going to be either a NoSQL technology like Cassandra or optimising relational database systems. I ...