Kevin Markwardt, MySQL Database Consultant at Pythian, explains how to set up an external slave for a live Amazon AWS Aurora instance.

Gabriel Ciciliani, MySQL Lead Database Consultant at Pythian, provides a guideline to analyzing a replication issues involving decimal columns and RBR, and how to deal with the problem without reseeding the slave.

Yabin Meng, Datastax Enterprise and Apache Cassandra Consultant at Pythian, explores two simple but useful methods to poll Cassandra metrics through a JMX Http Bridge.

Yabin Meng, Datastax Enterprise and Apache Cassandra Consultant at Pythian, explores an alternative Cassandra monitoring solution to DataStax’s OpsCenter.

Igor Donchovski, Database Consultant at Pythian, explains the MongoDB Operations log. Discover how the replication window compares to MySQL, how to change the oplog size, and what is improved in MongoDB 3.0 wiredTiger engine.

Ivan Groenewold, MySQL Database Consultant at Pythian, provides examples of useful operations using xtrabackup.

Gabriel Ciciliani, MySQL Lead Database Consultant at Pythian explains what to do if your 5.6 MySQL slave IO thread is not able to connect to the master after discarding connectivity issues or parameters typos.

Insight from Ivan Groenewold, MySQL Database Consultant at Pythian, on the ib_logfiles mtime mystery.

Gabriel Ciciliani, MySQL Lead Database Consultant at Pythian, explains MySQL Fabric faulty server detection.

In the second post in this series, Yabin Meng, Datastax Enterprise and Apache Cassandra Consultant at Pythian, explains his approach to migrating dynamic thrift data to CQL.