Google revamps its App Engine to combat reliability issues in Datastore.
Kevin Gibbs, from the Google App Engine Team writes on the Google blog, "Over the course of the past few months we've made major strides in fixing these issues. However, our experience with these issues has made us rethink some of our design assumptions."
"As we promised you in some of our outage reports earlier this year, we wanted to give you a more fundamental solution to the problem."
The new Datastore configuration option - the High Replication Datastore, apparently provides the highest level of availability for reads and writes, but at a cost as the database will suffer from increased latency.
The High Replication Datastore is designed to provide fault-tolerant replication of data and will use a Paxos algorithm to synchronise data across data centres in real time.
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