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From "Ryan Svihla (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-8754) Required consistency level
Date Fri, 06 Feb 2015 17:37:34 GMT
Ryan Svihla created CASSANDRA-8754:

             Summary: Required consistency level
                 Key: CASSANDRA-8754
             Project: Cassandra
          Issue Type: New Feature
            Reporter: Ryan Svihla

Based on restrictions prevent a query based on a query level not being met.

Lots of customers struggle with getting all their dev teams on board with consistency levels
and all the ramifications. The normal solution for this has traditionally to build a service
in front of Cassandra that the entire dev team accesses. However, this has proven challenging
for some organizations to do correctly, and I think an easier approach would be to require
a given consistency level as a matter of enforced policy in the database. 

I'm open for where this belongs. The most flexible approach is at a table level, however I'm
concerned this is potentially error prone and labor intensive. It could be a table attribute
similar to compaction strategy.

The simplest administratively is a cluster level, in say the cassandra.yaml

The middle ground is at they keyspace level, the only downside I could foresee is keyspace
explosion to fit involved minimum schemes. It could be a keyspace attribute such as replication

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