Cloud computing is one of the most promising changes in computing, but how does it enable enterprises to run applications? What about standard technologies, modernizations and the microservices hype during the last years? While answering these questions, this talk gives an introduction to the Google cloud (PaaS) platform, some of its services and gives guidance for possible cloud projects.

1. BASEL BERN BRUGG DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. GENEVA
HAMBURG COPENHAGEN LAUSANNE MUNICH STUTTGART VIENNA ZURICH
Java for enterprises in the
Google cloud
Thomas Bröll
Trivadis Stuttgart

2. Agenda
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1. Introduction
2. Legal considerations
3. The software architect‘s point of view
4. The services point of view

3. Java for enterprises in the Google cloud3 9/30/2016
Introduction

4. Introduction
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Cloud characteristcs
On-demand
Self-service
Broad network access
Pay per use
Shared, pooled resources
Rapid elasticity

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6. Gartner - IaaS
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Source: https://www.gartner.com/doc/reprints?id=1-2G2O5FC&ct=150519

7. Gartner - PaaS
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https://www.gartner.com/doc/reprints?id=1-2C8JHBP&ct=150325&st=sb

8. Introduction
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PaaS = Platform as a Service

9. Java for enterprises in the Google cloud9 9/30/2016
Legal considerations

10. Service fee
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Individual metrics for each service
AppEngine: Instances $0.05 / hour = $37/month
Datastore: $0.06 per 100.000 reads, $0.18 per 100.000 writes
Network: $0.12 per GB
…

11. Service Level Agreement
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>= 99.x % Uptime
Service fee refund (percentage)
Downtime definition
• "Downtime" means more than a five percent Error Rate. Downtime is measured
based on server side Error Rate.
• "Downtime Period" means a period of ten consecutive minutes of Downtime.
Intermittent Downtime for a period of less than ten minutes will not be counted
towards any Downtime Periods.

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13. Gartner - PaaS
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Global data centers
Private network
Dedicated customer
connections possible
https://www.gartner.com/doc/reprints?id=1-2C8JHBP&ct=150325&st=sb

14. Google cloud security & privacy
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https://cloud.google.com/security/compliance
ISO 27001 (Basics, BSI: IT-Grundschutz)
– Re-newed and extended
ISO 27017 (cloud security)
ISO 27018 (cloud privacy)
PCI DSS 3.1 (Payment card industry data security standard)
EU model contract clauses available

15. Google cloud security & privacy
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http://www.cloudcomputing-insider.de/10-tipps-fuer-datenschutz-und-datensicherheit-in-
der-cloud-a-543941/

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The software architect‘s point of
view

17. The software architect‘s point of view
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Focus on your application
Scalability enforces new patterns & paradigms
– CAP theorem (consistency, availability, partition tolerance)
– Scalability is enforced (by pricing and load)
The browser & mobile devices are the future platform

18. The software architect‘s point of view
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Re-think application architecture
MicroService applications
Stateless components
Storage patterns
– NoSQL / key-value
– Eventual consistency
Messaging / delayed processing
– Idempotent worker (at least once delivery)

19. User Interface
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Load
Balancer
UI
ComponentUI
ComponentUI
Component
Elastic Load
Balancer

20. User Interface
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Load
Balancer
UI
ComponentUI
ComponentUI
Component
Elastic Load
Balancer
AppEngine App
Stateless
Component
Pattern !

21. App Engine
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Scales your application on demand, no interaction required
Customers only provide a well-behaved Micro Service
– Large applications can be split into „Services“
Flexible model
– Use whatever you like (Java, Python, Go …. Docker)
– Behave well (ports, lifecycle events)
– Easy transition
Feature-complete!

22. Java @AppEngine
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Standard: Java 7 & Jetty (Servlet 2.5)
Flexible:
• JEE Microprofile
• Payara
• TomEE
• Wildfly
• …
• Spring Boot
• Dropwizard
Focus on lightweight applications & startup times!

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24. Processing Component
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Processing
ComponentProcessing
ComponentProcessing
Component
Elastic queue

25. Processing Component
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Processing
ComponentProcessing
ComponentProcessing
Component
Elastic queue

26. Processing/Messaging options
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AppEngine
– Push queue
– Pull queue
– Cron jobs
Cloud PubSub
– Publish
– Subscribe

27. Storage options
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Cloud SQL
– MySQL
– More or less IaaS-like
Datastore & BigTable
– Document / Key-Value
– No SQL / key-value
Storage
– Store any data
VM storage
Google drive
CDN

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The services point of view

29. Well-know Google services
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Custom Search API
Google applications (Mail, Calender, Drive, Contacts, …)
URL Shortener

30. Geo services
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Maps
Routing
Places
Geocoding / reverse geocoding
Distance

31. Cloud Vision API
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Image content recognition
– Face recognition
– Mood
OCR

32. Machine learning
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Google Predicition API
Analyze natural data
Cross selling recommendations
Up selling
Demand forecast
Fraud detection

33. Android / mobile
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Android has the greatest market share for mobile devices
Google is the company behind android development
Android in the google cloud:
Google Cloud Endpoints
– Easy to use API (Android, iOS, JavaScript)
Firebase Cloud Messaging
– Device notification
– Android & iOS

34. Some notes
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Google is a slowly moving container ship (at least in the Java world)
AppEngine „flexible model“ is beta,
„Standard“ is stable but not state-of-the-art (ask Google)
Flexible model has no no-cost pricing threshold
HTTP & REST rule the transport layer
Increasing level of open source software
JavaScript first!
Most services require an API key
– Protect it!

35. Thomas Bröll
Principal consultant
Tel. +49 711 903 632 305
thomas.broell@trivadis.com
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