After some years, MySQL with Galera became the most common solution for synchronous replication. The cloud (and EC2 in particular) was one of the platforms that most successfully employed MySQL/Galera installations. This year with Aurora, Amazon introduced an alternative solution that use all the flexibility of AWS and simplicity of RDS. This presentation describes the behavior of both MySQL/Galera and Aurora, showing the details of how the two different solutions behave when dealing with same load. We will highlight the strong point of each, and which represents the best tool - depending on the needs of the situation. Attendees will be able to make an informed decision on what kind of solutions will be the most efficient, in respect to their actual requirements.

1. Marco “the Grinch” Tusa
April 2016
Comparing synchronous replication
solutions in the cloud

2. Percona Live Europe 2016
Comparing synchronous
replication solutions in the
cloud
Marco Tusa Manager Consulting
Amsterdam, Netherlands | October 3 – 5, 2016

3. — Marco “The Grinch”
— Open source enthusiast
About me

4. A quick Overview of recent tests done in AWS comparing
EC2 with PXC and Aurora
About tests
http://goo.gl/d2Wq06
About Aurora
https://goo.gl/o32HaV
Overview

5. Use the Right Tool for the Job…
My Motto

6. … and do the right thing!
My Motto

7. The platform

8. Small Boxes
— EIP = 1
— VPC = 1
— ELB=1
— Subnets = 4 (1 public, 3 private)
— HAProxy = 6
— MHA Monitor (micro ec2) = 1
— NAT Instance (EC2) =1 (hosting EIP)
— DB Instances (EC2) = 3 (m4.xlarge)
16GB
— Application Instances (EC2) = 6 (4)
— EBS SSD 3000 PIOS
— Aurora RDS node = 3 (db.r3.xlarge)
30GB
Machines used
Large Boxes
— EIP = 1
— VPC = 1
— ELB=1
— Subnets = 4 (1 public, 3 private)
— HAProxy = 4
— MHA Monitor (micro ec2) = 1
— NAT Instance (EC2) =1 (hosting EIP)
— DB Instances (EC2) = 3 (c3.8xlarge)
60GB
— Application Instances (EC2) = 4
— EBS SSD 5000 PIOS
— Aurora RDS node = 3 (db.r3.8xlarge)
244GB

9. IIBench
Small boxes Large boxes
üPXC/Galera stay consistent
üAurora was better on large box (as expected)

10. IIBench
Small boxes Large boxes
üPXC/Galera significantly less but then is consistent
üAurora still less but consistent

11. IIBench
Small boxes Large boxes
üPXC/Galera significantly less and consistent
üAurora Taking longer but with Large was more stable

12. App Ingest multi table
Small boxes Large boxes
üPXC/Galera performing better on Small
üAurora Much better on Large

13. App Ingest multi table
Small boxes Large boxes
üPXC/Galera performing better on Small
üAurora Much better on Large

14. App OLTP multi table
Small boxes Large boxes
üPXC/Galera performing better on Small
üAurora Much better on Large

15. App OLTP multi table
Small boxes Large boxes
ü PXC/Galera performing better on Small
ü Aurora Much better on Large

16. App Tpcc-mysql multi table
Small boxes
ü PXC/Galera
performing
better on Small

17. App Tpcc-mysql multi table
Large boxes
ü Aurora Much better on Large

18. App Sysbench 250 Tables
Large boxes only
ü Aurora Much better on Large

19. HA how long ?
Both the platform dimensions
Some variance but not so significant as such I kept the old value

20. Execution latency
Large boxes
ü Aurora Much better on Large
Small boxes

21. — For small installation Aurora is not a good fit, PXC was working better
— As workload scale and make sense to use larger boxes Aurora had
shown better results, scaling as expected.
— Aurora has still some issues (known):
— Hard limit to 16k connections
— When using hotspot it is easy to hit the 158 error problem (no is not the
Full text error)
— I am sure that I hit some connector issue here and there, exploring
alternatives to the MariaDB solution may be a good thing to keep in mind
(for the Aurora dev team).
I like to provide to my customer alternatives, Aurora is one but …
Conclusions

22. $$$^

23. Q & A

24. Rate My Session!

25. Contacts
To contact Me
Marco.tusa@percona.com
marcotusa@tusacentral.net
To follow me
http://www.tusacentral.net/
http://www.percona.com/blog/
https://www.facebook.com/marco.tusa.94
@marcotusa
http://it.linkedin.com/in/marcotusa/
“No mission refused!”