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KEY LESSONS
41 2015
Jigsaw is getting
ready for prime time
The ultimate modularity framework supports strong
encapsulation enforced by the JDK...
2Performance problems are not always in your house, you need
insight in the complete neighbourhood to get it right.
Flame ...
3
Software is a craft, creating
value through software is an
Bots can help you to focus on the things that matter and
auto...
Containers as the lingua franca
Build time: Containerisation results in more isolated and repeatable builds and remote int...
A monolithic java app is a bottleneck for innovation.
Microservices owned by autonomous teams result
in many parallel init...
‘We are not all or ; when
you pretend to be by copying their architecture,
you get all their problems for free but need to...
Anti pattern : you think it
is big data but it is not!
Alex Holmes - Avoiding Big Data Antipatterns
ACA IT-SOLUTIONS | © 2...
Design your build to
validate your design
Build driven architecture takes into account the structure
of the build to valid...
A microservice architecture
requires even more metrics
Collect metrics for micro services not only in production but
also ...
strangulate bad parts; the
recommended approach to evolve
towards a microservice architecture
1. identify the parts the ne...
Say Microservices, Say Security
JBoss Keycloak is an option worth considering; seamless authentication
for all your micros...
Communication is what
drives your design
BDD is all about collaboration & communication, automated
tests are just a side-e...
‘An interface tells you what to
do, but does nothing itself.
Kinda like your boss’
Venkat Subramaniam on the changes in in...
Time to update our design patterns;
some will disappear by using lambda’s
Design patterns will become more fluent, lightwei...
@tmetten
@tomdw @thomasborghs @koenolaerts
@stieno
ACA IT-SOLUTIONS | © 2015
www.aca-it.be
@aca_it
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JavaOne 2015: 14 Key Lessons, you should learn

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Getting the most out of JavaOne 2015 is a full-time job. Our ACA IT-Solutions experts visited the JavaOne conference and came back with their 14 most important key learnings of the JavaOne conference.

A presentation by Stijn Van Den Enden, Tom De Wolf, Thomas Borghs, Thomas Metten, Koen Olaerts.

Published in: Technology

JavaOne 2015: 14 Key Lessons, you should learn

  1. 1. KEY LESSONS 41 2015
  2. 2. Jigsaw is getting ready for prime time The ultimate modularity framework supports strong encapsulation enforced by the JDK module system augmented with the service discovery mechanism of OSGi. Let’s hope both communities can figure this out together. 1ACA IT-SOLUTIONS | © 2015
  3. 3. 2Performance problems are not always in your house, you need insight in the complete neighbourhood to get it right. Flame graphs to the rescue - Brendan Gregg The messy house fallacy ACA IT-SOLUTIONS | © 2015
  4. 4. 3 Software is a craft, creating value through software is an Bots can help you to focus on the things that matter and automate all the rest. Sven Peters - Rise of the Machines Art. ACA IT-SOLUTIONS | © 2015
  5. 5. Containers as the lingua franca Build time: Containerisation results in more isolated and repeatable builds and remote integration testing here. Deployment time: Dev and Ops speak containers Operations: cluster abstractions allow for scale-out. (Kubernetes, Swarm, Mesos). With the release of Docker 1.9 network support becomes a core feature. A cluster of virtual docker hosts in which containers can form a logical network. Containers are like diapers, once they are full of shit, throw them away and put on a new one - Arun Gupta. 4
  6. 6. A monolithic java app is a bottleneck for innovation. Microservices owned by autonomous teams result in many parallel initiatives - Gilt Disclaimer - MicroServices tend to be deceptively simple to understand; complexity is in the interactions between services now. 5 ACA IT-SOLUTIONS | © 2015
  7. 7. ‘We are not all or ; when you pretend to be by copying their architecture, you get all their problems for free but need to solve them at a high cost.’ - Bert Ertman Microservices have a lot of benefits, but you’re aiming for a mature software engineering practice. 6 ACA IT-SOLUTIONS | © 2015
  8. 8. Anti pattern : you think it is big data but it is not! Alex Holmes - Avoiding Big Data Antipatterns ACA IT-SOLUTIONS | © 2015
  9. 9. Design your build to validate your design Build driven architecture takes into account the structure of the build to validate the architecture.
 A build framework allowing to write your build in a real programming language, allows to design your build to be clean and powerful. Gradle can help here. 8 ACA IT-SOLUTIONS | © 2015
  10. 10. A microservice architecture requires even more metrics Collect metrics for micro services not only in production but also when automated acceptance tests are running! Monitoring should not only aggregate metrics cross containers but also collect individual container metrics. Individual problems are not always visible in the aggregated metrics. 9ACA IT-SOLUTIONS | © 2015
  11. 11. strangulate bad parts; the recommended approach to evolve towards a microservice architecture 1. identify the parts the need improvement 
 (e.g. pain of maintaining)
 2. start replacement projects 10 ACA IT-SOLUTIONS | © 2015
  12. 12. Say Microservices, Say Security JBoss Keycloak is an option worth considering; seamless authentication for all your microservices by passing authentication tokens. Multiple login mechanisms available out of the box: Twitter, Facebook, LDAP / AD, OpenId, SAML, Kerberos, RDBMS. 11ACA IT-SOLUTIONS | © 2015
  13. 13. Communication is what drives your design BDD is all about collaboration & communication, automated tests are just a side-effect. ‘Should the software actually do this?’: is an extremely powerful question to drive your application & design 12 ACA IT-SOLUTIONS | © 2015
  14. 14. ‘An interface tells you what to do, but does nothing itself. Kinda like your boss’ Venkat Subramaniam on the changes in interfaces, i.e. static & default methods 13 ACA IT-SOLUTIONS | © 2015
  15. 15. Time to update our design patterns; some will disappear by using lambda’s Design patterns will become more fluent, lightweight and easily executable.They will become easier to implement and can be added indirectly into the code 14 ACA IT-SOLUTIONS | © 2015
  16. 16. @tmetten @tomdw @thomasborghs @koenolaerts @stieno ACA IT-SOLUTIONS | © 2015
  17. 17. www.aca-it.be @aca_it

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