Microprofile at IBM with Liberty

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IBM loves the Microprofile. This deck goes into the backstory of where Liberty came from and how it was put together as a runtime built to support cloud native applications. A little short of context without the demo alongside! https://www.youtube.com/watch?v=nGla6-g76M0

Technology

©2017 IBM Corporation
MicroProﬁle at IBM:
Erin Schnabel
schnabel@us.ibm.com
@ebullientworks
Enabling creation of Cloud Native applications  
and Microservices with Liberty
Alasdair Nottingham
alasdair@us.ibm.com
@nottycode

©2017 IBM Corporation
Names you might recognize…
Kevin Sutter 
WebSphere Java EE Architect
sutter@us.ibm.com
Alasdair Nottingham 
WebSphere Liberty Architect
alasdair@us.ibm.com
Erin Schnabel 
Cloud Native Developer Services
schnabel@us.ibm.com
Emily Jiang 
MicroProﬁle Development Lead
emijiang@uk.ibm.com

©2017 IBM Corporation
6
WebSphere Application Server (the full proﬁle) has been around
forever.
Big codebase
Big customer base
Big workloads
… Big inhibitors to massive change 
History

©2017 IBM Corporation
History
WebSphere Application Server (the full proﬁle) has been around
forever.
Big codebase
Big customer base
Big workloads
… Big inhibitors to massive change 
7
This is not a complaint.
This is a problem we are 
happy to have.

©2017 IBM Corporation
Code that has been around
forever…
If your code lives long enough,  
and is used enough,  
it ends up looking like…  
9

©2017 IBM Corporation
Code that has been around
forever…
10
dragons

©2017 IBM Corporation
Code that has been around
forever…
11
dragons
?!
Especially code that has roots  
going back to late ‘90s…

©2017 IBM Corporation
What if…
If we could start over, what would we want?
Developer-friendly
Simple
Dynamic
Light-weight
Composable / Flexible
Extensible
14

©2017 IBM Corporation
What if…
16
grokable
conﬁg
provisioning
runtime 
only
some combination of 
technologies 
app-centered
everything
How do we do this?

©2017 IBM Corporation
What if…
17
runtime 
only
some combination of 
technologies 
app-centeredeverything
And yet allow this?
no restarts

©2017 IBM Corporation
What if…
18
And for crying out loud,
can we prevent THIS?!
runtime3rd party 
bundle 
B
system 
bundle 
A
Application
X

©2017 IBM Corporation
Conﬁguration
XML for conﬁguration format
Ubiquitous
Expressive
BUT, for simplicity:
single ﬁle
usable defaults
19
<server description=“simple”>
<featureManager>
<feature>jsp-2.2</feature>
</featureManager>
<httpEndpoint id=“defaultHttpEndpoint”  
httpPort=“9080” httpsPort=“9443” />
</server>

©2017 IBM Corporation
Conﬁguration
Composable system requires composable conﬁg:
Individual components own their conﬁg 
No centralized repository
No externally deﬁned global conﬁg model
20

©2017 IBM Corporation
Building a kernel from scratch
OSGi-based for all the reasons
First-class use of OSGi services
Conﬁguration Admin & Metatype
Dynamic conﬁguration changes
Declarative Services
Runtime composition on-the-ﬂy
21

©2017 IBM Corporation
Provisioning
Two phases of provisioning:
Bootstrap the kernel to get conﬁguration
Runtime provisioning based on conﬁgured features
Add/remove features via conﬁg update
install/uninstall bundles,
add/remove conﬁguration elements
creation/removal of services!
22

©2017 IBM Corporation
Isolation
We mean this in a good way.
Liberty runtime serves two masters:
Typical Application Server paradigm 
(apps strictly separated from runtime) — API
Platform extender paradigm 
(the “app” is the runtime) — SPI
23

©2017 IBM Corporation
An ode to classloaders…

©2017 IBM Corporation
</cleanSlate>
Of course, we didn’t really get a clean slate. 
Application compatibility had to be
preserved.
But that still gave us a LOT of room…

©2017 IBM Corporation
Liberty + MicroProﬁle = ❤
27
MicroProﬁle ﬁts how Liberty works
Focused elements, use what you need
Cloud Native technologies forthcoming
Conﬁg, Metrics, Health Check
E2E trace — opentracing.io AND… ?
Caching — JSR 107?  
JSR 107 + CDI + Redis (experiment):  
https://github.com/BarDweller/JSR107-RI-CDI-Redisson-Bluemix

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The Future of Platform Engineering

Jemma Hussein Allen

Elevating Tactical DDD Patterns Through Object Calisthenics

Dorra BARTAGUIZ

After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!

The Art of the Pitch: WordPress Relationships and Sales

Laura Byrne

Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes? All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.

Search and Society: Reimagining Information Access for Radical Futures

Bhaskar Mitra

The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.

Knowledge engineering: from people to machines and back

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НАДІЯ ФЕДЮШКО БАЦ «Професійне зростання QA спеціаліста»

De-mystifying Zero to One: Design Informed Techniques for Greenfield Innovati...

Unsubscribed: Combat Subscription Fatigue With a Membership Mentality by Head...

From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...

The Future of Platform Engineering

Elevating Tactical DDD Patterns Through Object Calisthenics

The Art of the Pitch: WordPress Relationships and Sales

Search and Society: Reimagining Information Access for Radical Futures

Knowledge engineering: from people to machines and back

Microprofile at IBM with Liberty

1. ©2017 IBM Corporation MicroProﬁle at IBM: Erin Schnabel schnabel@us.ibm.com @ebullientworks Enabling creation of Cloud Native applications   and Microservices with Liberty Alasdair Nottingham alasdair@us.ibm.com @nottycode

3. ©2017 IBM Corporation Names you might recognize… Kevin Sutter  WebSphere Java EE Architect sutter@us.ibm.com Alasdair Nottingham  WebSphere Liberty Architect alasdair@us.ibm.com Erin Schnabel  Cloud Native Developer Services schnabel@us.ibm.com Emily Jiang  MicroProﬁle Development Lead emijiang@uk.ibm.com

7. ©2017 IBM Corporation History WebSphere Application Server (the full proﬁle) has been around forever. Big codebase Big customer base Big workloads … Big inhibitors to massive change  7 This is not a complaint. This is a problem we are  happy to have.

8. ©2017 IBM Corporation History WebSphere Application Server (the full proﬁle) has been around forever. Big codebase Big customer base Big workloads … Big inhibitors to massive change  8 This is not a complaint. This is a problem we are  happy to have. But it is still a problem.

15. ©2017 IBM Corporation What if… If we could start over, what would we want? Developer-friendly Simple Dynamic Light-weight Composable / Flexible Extensible 15 selectable content clear API/SPI runtime/app isolation human usable conﬁguration

19. ©2017 IBM Corporation Configuration XML for configuration format Ubiquitous Expressive BUT, for simplicity: single file usable defaults 19 <server description=“simple”> <featureManager> <feature>jsp-2.2</feature> </featureManager> <httpEndpoint id=“defaultHttpEndpoint”   httpPort=“9080” httpsPort=“9443” /> </server>

21. ©2017 IBM Corporation Building a kernel from scratch OSGi-based for all the reasons First-class use of OSGi services Configuration Admin & Metatype Dynamic configuration changes Declarative Services Runtime composition on-the-fly 21

22. ©2017 IBM Corporation Provisioning Two phases of provisioning: Bootstrap the kernel to get configuration Runtime provisioning based on configured features Add/remove features via config update install/uninstall bundles, add/remove configuration elements creation/removal of services! 22

23. ©2017 IBM Corporation Isolation We mean this in a good way. Liberty runtime serves two masters: Typical Application Server paradigm  (apps strictly separated from runtime) — API Platform extender paradigm  (the “app” is the runtime) — SPI 23

27. ©2017 IBM Corporation Liberty + MicroProfile = ❤ 27 MicroProfile fits how Liberty works Focused elements, use what you need Cloud Native technologies forthcoming Config, Metrics, Health Check E2E trace — opentracing.io AND… ? Caching — JSR 107?   JSR 107 + CDI + Redis (experiment):   https://github.com/BarDweller/JSR107-RI-CDI-Redisson-Bluemix

Microprofile at IBM with Liberty

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