With Multiple Active Primary MySQL Databases Watch this on-demand webinar to learn the right way to deploy geo-distributed databases. We look at the pitfalls of deploying a single site and passive sites, and from there we show how to provide the best user experience by leveraging geo-distributed MySQL. When considering geo-distributed MySQL database environments it is important to understand the nuances of having multiple active clusters deployed across sites and clouds. This webinar walks through the proper planning of geo-distributed MySQL for success. Finally, you’ll learn about our best practices for multiple primary clusters, as well as failover and disaster recovery for MySQL. AGENDA - Why Geo-Distributed Databases - Geo-Distributed MySQL Starts With High Performance Local Clusters - Extend The Cluster To Multiple Datacenters/Clouds - Best Practices For Multiple Primary Clusters - Failover & Disaster Recovery - Key Benefits PRESENTER Matthew Lang, Customer Success Director – Americas, Continuent, has over 25 years of experience in database administration, database programming, and system architecture, including the creation of a database replication product that is still in use today. He has designed highly available, scaleable systems that have allowed startups to quickly become enterprise organizations, utilizing a variety of technologies including open source projects, virtualization and cloud.

1. The MySQL Availability Company
Geo-Distributed Clustering Done Right!
With Multiple Active Primary MySQL Databases
Matthew Lang

2. About Me
Matthew Lang
Customer Success Director, Americas

3. Why Geo-Distributed MySQL?

4. Geo-Distributed Databases
• Geo-Distribution of data brings data closer to end users
• Provides a better user experience, and
• Provides faster response times
• Very few databases operate in a distributed manner
• Replication challenges/lag
• Data consistency across sites
• All sites are ALWAYS Active
• Hybird and Multi-Cloud

5. Use Cases
• Gaming – Minimize hops for best player experience
• Medical – Doctors need to spend time with patients, not waiting for practice management
software
• IOT – many devices distributed throughout the world need quick connectivity
• Credit Card Processing – prefer to connect to closest site for fastest transaction processing
• Business Continuity – Business can seamlessly fail over to a working site, and failback when local
site is operational

6. Single Site – Poor user experience

7. Passive Site – Somewhat better user experience

8. About Passive Sites
• Provides local reads, so some improvement in user experience
• Writes are done over the WAN, could be poor performance with writes
• Writes must be replicated BACK to the local databases
• User may not be able to read what he just wrote due to replication latency
• We need to deal with failover AND failback
• This architecture works well for high read/low write workloads
• But this webinar is about Geo-Distributed Multiple Active MySQL Databases!

9. Geo-Distributed MySQL starts with High
Performance local clusters

10. Tungsten Clustering
HA, DR and Performance Scaling
Benefits
24x7 data access Off-the-shelf MySQL
SQL load balancing Simple management
Application Stacks
Tungsten Connectors
writesreads reads

11. Tungsten Clusters
Add HA and Scaling Without Taking Features Away
Manager
Replicator
Manager
Replicator
Manager
Replicator
monitoring&control
Dataservice
Replica ReplicaPrimary

12. Extend the cluster to multiple datacenters/clouds

13. What are the requirements?
• Use off the shelf MySQL/MariaDB/Percona Server
• Pick what works for you
• No constraints on version
• Must have an Active (read/write) database in all sites
• Users can locally read and write
• Minimizing distance between user and back-end = lower latency
• Each site must be able to replicate to each other site, and process replication events
• All sites in sync
• Application performance should not suffer due to replication!
• Management, Orchestration, and Monitoring for administrators

14. Tungsten Composite Active-Active
Operate a Managed, Active Mesh of Clusters
DataService
Replica
Primary
Replica
DataService
Replica
Primary
Replica
Read-Write
Read-Write
Composite
Active-Active
Replication
Async
Active/Active
Cross-Site
Replication
(Managed)

15. Tungsten Clustering
Composite Active-Active Topology
• Minimum 2 Clusters
• Min 3 nodes per cluster
• All clusters are read/write
• Multi-Region, Multi-Cloud
• Vastly simplified setup and control
• Multiple write-able primaries
• Managed cross-site replication
• Available within Dashboard View

16. Dashboard

17. Tungsten Dashboard
• Web-based UI for monitoring and managing Tungsten
Clustering deployments
• View, monitor and maintain all database clusters in one
place.
• Monitor replication status, number of connections, and
datasource states
• Full suite of command line tools also included
• Shun (Fence) datasources
• Promote replicas to primary
• And more!

18. Best Practices for Multiple Primary Clusters

19. Best Practices
• ROW based replication
• Global unique keys on all tables
• Use integers with offsets to guarantee uniqueness by site:
• Site 1: 1,3,5,7…
• Site 2: 2,4,6,8…
• Or UUID
• Shard users to sites closest to them
• Use UTC time zone and NTP on all servers
• Limit the use of triggers

20. Failover and Disaster Recovery

21. Automatic Failover
1. Database nodes go down
2. Connectors halt connections to local cluster
3. Connectors automatically route traffic to working cluster

22. Manual Failover
1. Entire site goes offline
2. Simply route users to another cluster
a. DNS
b. Load balancer

23. Key Benefits

24. Tungsten Key Benefits
Continuous MySQL Operations
• MySQL High Availability and Disaster Recovery solution, which provides redundancy within and
across data centers
• Immediate failover for maximum availability and data protection of business-critical MySQL
applications
• Reduce MySQL recovery time from hours or days to mere seconds
• Dashboard provides graphical view and management of all globally distributed MySQL clusters
Zero Downtime MySQL
• Site-level and cross-site failover ensures application availability
• Upgrade hardware, software and data without taking applications offline
• MySQL compatibility means seamless migration of your data and applications

25. Geo-Scale MySQL
Tungsten Key Benefits
• Load-balance MySQL read operations across multiple slaves, locally and globally
• Geo-distributed MySQL clusters bring data close to your application users for faster response times
• Easily add more MySQL clusters as needed for unlimited scaling, both locally or across the globe
Hybrid-Cloud and Multi-Cloud MySQL
• Deploy in the cloud, VM and bare metal environments
• Mix-and-match on-premises, private and public clouds (incl. Amazon AWS, Google Cloud and
Microsoft Azure)
• Easy, seamless migration from cloud to cloud to avoid vendor lock-in in any specific cloud provider
• Withstand node, data center, zone or region failures or outages

26. Tungsten Key Benefits
Intelligent MySQL Proxy
• Provides intelligent traffic routing to a valid MySQL master, locally and globally
• Scale read queries via query inspection and other methods
• Application and active users do not disconnect during MySQL master failover events
Most Advanced MySQL Replication
• Filter and transform your data in-flight
• No more ETL, get real-time data feeds into your analytics
• Replicate directly into popular analytic repositories: AWS RedShift, Cassandra, ClickHouse,
Elasticsearch, HDFS, Kafka and Vertica
• Unlimited real-time transactional data transfer to eliminate escalating replication cost of ETL-based
alternatives

27. Tungsten Key Benefits
Full MySQL Support, No Application Changes
• Deploy and Configure MySQL clusters in minutes
• Not ‘MySQL-compatible” solution. Use any of your off-the-shelf MySQL, MariaDB and Percona Server
versions
• Support for all modern MySQL (5.x through 8.x) and MariaDB (5.x and 10.x) versions and features
• SSL support for all in-flight traffic
• Native MySQL support means easy and complete migration of your data and applications
Cost Savings
• Use the free open-source MySQL for your business-critical needs
• Optimize costs by selecting the most cost-effective cloud environment(s) at any given time
• Eliminate downtime risks and associated cost, also during maintenance (zero downtime maintenance
operations)
• Reduce DBA time spent on admin and recovery operations, lowering your costs while increasing
reliability.

28. Tungsten Key Benefits
Industry Best 24/7 MySQL Customer Service
• Highly Qualified 24/7 support. All support team member have 15 or more years of MySQL DBA and
Site Reliability Experience
• 24/7 support comes with 1-hour SLA, with response times for urgent requests averaging less than 5
minutes
• MySQL uptime measured in months or years

29. For More Information, Contact Us:
Eero Teerikorpi
Founder, CEO
eero.teerikorpi@continuent.com
Eric Stone
COO
eric.stone@continuent.com
Jean-Jerome Schmidt
VP Marketing
jean-jerome.schmidt@continuent.com
Matthew Lang
Customer Success Director Americas
matthew.lang@continuent.com
Chris Parker
Customer Success Director EMEA & APAC
chris.parker@continuent.com