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Preface
Not a critique - more like a cautionary tale.
0
The Big Dig
$7.4b $21.5b
How not
to spend
$15000
per month with AWS Athena
$ whoami
Data platform lead @ bestseller.com
01
Table of contents
and why is it important
TCO
that lead to scary
numbers
Scary decisions
03
Up! Up and away!
Scary numbers
02
What can’t be cured
must be endured
Learnings
04
Total cost of ownership
Operational costs
Production resources,
maintenance time
Initial building price
Developer’s salaries
Ongoing charges
Development resources
(database, networking…)
Upskilling
Cost of courses, time spent
learning
01
Total cost of ownership
vs. value it provides
01
TCO <= value
Example TCO of a project
120.000,00
Build this?
Scary
numbers
They only went up…
02
$15000
Per month in AWS Athena query costs
~$13800
~$12500
1 x
1000-1500 x
37.5%
Of total monthly cloud spend
Scary
decisions
That lead to scary numbers
03
Lack of cost
awareness
Athena queries are priced at $5 per
terabyte of data scanned.
No one asked the question:
“How much will this cost?”
No systematic cost reporting
We do have:
■ Tagged resources
■ Access to Cost Explorer
■ Budget alerts
No systematic cost reporting
We also have:
■ Other priorities
■ Lack of cost accountability
■ Budget alerts with silly
numbers
Managed
service misuse
Athena is truly serverless
and it will happily scan, scale
and charge you for what it
scanned.
SELECT COUNT(style_id) FROM schema.SALES;
SELECT COUNT(style_id) FROM schema.SALES
WHERE month=11 AND day=20;
Why?
One
person
team
Brainstorms alone
01
Merges their code
03
Commits alone
02
Every developer has the
responsibility to write good
software.
Every human has the right to
make mistakes.
One
person
is not
a team
How not
to spend
$15000?
per month with AWS Athena
01
Learnings
Do the math
Inform and be
informed
03
Own it
02
Friends or
foes
04
01
Learnings
Do the math
Inform and be
informed
03
Own it
02
Friends or
foes
04
01
Learnings
Do the math
Inform and be
informed
03
Own it
02
Friends or
foes
04
01
Learnings
Do the math
Inform and be
informed
03
Own it
02
Friends or
foes
04
How did we reduce cost
so drastically?
By deleting the project :(
“We’re not saving lives,
we’re selling clothes”
– Goncalo, our manager
Credits: This presentation template was created
by Slidesgo, including icons by Flaticon, and
infographics & images by Freepik
Thanks!
Do you have any questions?
Please keep this slide for attribution
Ivica Kolenkas
@nekybrate
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How (not) to spend $15k per month with AWS Athena.pdf