The document discusses how PaaS services like Heroku allow developers to build and run web services for free or at low cost by providing infrastructure and additional services. It highlights how Heroku provides free dynos, storage, databases and add-ons that enable agile development, continuous integration and deployment, performance monitoring and high availability without ongoing operations overhead. By leveraging these PaaS capabilities, developers can focus on coding while their applications are hosted and scaled automatically in the cloud.

1. Go Frugal With
Web Services
When agile development, good performance,
and reliability meet zero cost (as in free
coffee)

2. About me
Education: IFAL, UFCG, UFMG, UFCG
Experience: Google, IFAL Santana do Ipanema
Interests: Cloud, high performance, scalability,
serverless computing, data engineering,
transparency, runtime environments, Go
Education and citizenship enthusiast
@daniellfireman
@danielfireman

3. Once upon a time ...

5. Home page

6. Suppliers

7. API

8. The goals

9. Fonte

10. Or a funnier version

11. Cost
● Run (infra + ops)
● Agile development e releasing

12. ● Good (enough) performance
● 24 x 7 on
● Support the first X increase in load
● Agile development e releasing
Quality

13. Time to market
● Agile development e releasing

14. Can we haz all that for free?
● Infra for running the service + no-ops + usage tracking
● Agile development and releasing
● Good performance + support X increase in load + 24 x 7 up

16. PaaS for the rescue

17. Fonte

18. ● One of the players
● Simple to get started
● Seamless integration with github.com
● Previous experience with AppEngine and Elastic Beanstalk:
○ wanted more visibility over the whole cycle
○ wanted freedom to try different backend services

19. ● 1 web/1 worker/1 on-off dyno
● 1000 hours/month shared across all dynos and apps*
● 512MB RAM per dyno
● Dynos sleep automatically after 30 minutes of inactivity
○ Wake up automatically when a request arrives
● Custom domains
● Slug compilation: 15 mins and 500MB
Fonte
free tier

20. How to get away with
costs

22. Agile Development and Release

23. speeds up development
● Simple. Focused on readability.
● OO
● Compiled + statically typed
● Garbage collected
● Natively concurrent
● Awesome standard library + a lot tooling
● Great community + tons of documentation
● ...

24. stores your code and
does version control

25. for continues integrating

26. collects coverage

27. continues releasing

28. Running / Production

29. has small memory
footprint (<512MB RAM)
Just after startup After some requests (sys mem consumption stable)

30. quickly produces a small,
native static binary

31. wakes up the sleepy dyno

32. checks latency
400
300
200
100

33. improves security

34. improves latency

35. improves DNS

36. does a lot more!

37. ● 10K rows, 20 concurrent connections on
Postgres (heroku-postgres)
● 496MB of MongoDB storage (mongolab)
● 25MB of in-memory Redis (heroku-redis)
● 5 Kafka topics (9.54MB each) (cloudkarafka)
● NewRelic dashboard
● 5GB worth of log processing + graphing +
alerts (logentries)
● And a lot more!
Fonte
free add-ons

38. tracks usage

39. And there is a lot more
out there!

40. You’ve got
Running, monitoring, usage tracking
Good performance, support first X increase in load and 24 x 7 on
Agile development and release
for free!

41. Thank you!
@daniellfireman
@danielfireman