21 Availability Service Stays up when component fails © 2018 Percona. 22 Availability via Redundancy Have more than one system Works well for stateless systems Is not enough for databases © 2018 especially “used right” Partial Replication/Syncronization Smart conflict resolution Cross Vendor Redundancy © 2018 Percona. 28 Sharding Split data set by certain criteria and store such “shards” on

dangerous applications, then you shall be responsible to take all appropriate fail-safe, backup, redundancy, and other v Access to Oracle Support for Accessibility measures to ensure its safe use. Oracle