Breaking Bad: building a Cassandra Platform Christopher Reedijk & Gary Stewart & Vincent Poncet

1. Breaking Bad:
Building a Cassandra
Empire
Big Data Expo
Gary Stewart, @Gaz_GandA
Christopher Reedijk, @creedijk
Utrecht, September 21, 2017

2. 2
a little bit about ING
Full-service bank
Very strong European base
Engineering company with a banking license
Largest bank of NL
150+ Squads

3. unexpected duo
3
We fight
We are complimentary
We have the same goal
Common enemies beware

4. Availability is not up-to-par
Scalability is very hard
High customer expectations
caught at a bad time
4

5. Time to try something new
• Nothing to lose!
Allow yourself to go crazy
• This is usually where the value is!
5
make the best of a bad bargain

6. Goal was clear and simple:
• Maximize the availability of the data layer
Challenge:
• Educate people to adopt this new thinking
Challengers:
• Architects, Managers, Engineers, Vendors, …
Solution:
• Build a data empire
being against downtime
6

7. Start specific to learn Cassandra
Allowed to bring down the bank
Noobs on building an empire
“Political” advice / guidance
7
bearer of bad news

8. take the bad with the good
8

9. ®
Manual
Data

10. cql
API
®
cql
files
Extracting
Data

11. APIAPI
cluster
metrics
cql
API
®
cql
files
Enriching
Data

12. APIAPI
cluster
metrics
cql
application
metrics
cql
API
®
cql
files
Linking
Data

13. APIAPI
cluster
metrics
cql
application
metrics
cql
files
cql
cql
API
®
Maintaining
Data

14. APIAPI
cluster
metrics
cql
application
metrics
cql
files
cql
cql
API
®
Securing
Data

15. be on to a good thing, shift-left
15
Freedom is creativity
Doing the hard work once

16. 16
be on to a good thing, despicable levels

17. damaged goods
17
Victim of our own success
Distracted from quality
Diverge instead of converge
Too much data

18. Started correlating metrics
• Latencies  read-repair-blocking
• Finding odd nodes out
• Have a diverse team
Connect with other initiatives
• Build a community
• Give back to open-source
18
a good turn

19. do well by doing good, platform eco-systems
19
Enabling others:
• Tracing
• Actionable insights
• Bakerstreet
• …

20. Clear and Easy
Anytime and Anywhere
Empower
Keep getting better
20
so far, so good …

21. Breaking Bad: Building a
Cassandra empire
Platform
Thank you
christopher.reedijk@ing.nl
@creedijk
gary.stewart@ing.nl
@Gaz_GandA
we are hiring!

22. Follow us to stay a step ahead
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In preparing the financial information in this document, the same
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differences are possible in the tables due to rounding.
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