• Fit workload requirements to the best suited cloud database system considering the read-optimized against write-optimized substitution.
• Latency versus Durability is another important axis. If develop-
ers know that they can lose a small fraction of writers such as
web poll votes, etc. they can acknowledge success, writes with-
out waiting for them to be synced to disk. An application requir-
ing large number of small writes may use ‘‘Redis’’.
• Auto-completion, Caching may use Redis, Memcached.
• Data mining, Trending-MongoDB, Hadoop and BigTable.
• Content based web portals-MongoDB, Cassandra and Sharded
ACID databases.
• Financial Portals-ACID database.