The document discusses the significance of cloud-native app development, highlighting its characteristics such as scalability, resilience, and adherence to the 12-factor app methodology. It emphasizes the need for a developer mindset change towards more responsibility and faster delivery through automation and proper API design. Key takeaways include building apps in a cloud-native fashion, utilizing open-source standards, and emphasizing the importance of DevOps and APIs.

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Cloud-native app development - the new normal 1
Cologne, 2021-12-09
Sven Bernhardt
CLOUD-NATIVE APP DEVELOPMENT –
THE NEW NORMAL

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THAT‘S ME
Cloud-native app development - the new normal 2
Sven Bernhardt
Cloud-Native enthusiast, API & integration geek. Always curious how new
technologies and concepts can help to make things more valuable and efficient.
¢ Chief Architect / Integration Evangelist@OPITZ CONSULTING Deutschland GmbH
¢ Oracle ACE Director
@sbernhardt
https://svenbernhardt.wordpress.com/

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Cloud-native app development - the new normal 3
WHY CLOUD-NATIVE?
https://opitzcloud.canto.global/b/S97PB

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MAIN CHALLENGE: ENSURE THE ABILITY TO INNOVATE
Cloud-native app development - the new normal 4
Source: https://konghq.com/resources/digital-innovation-benchmark-2021/

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CLOUD-NATIVE APPS
Cloud-native app development - the new normal 5
¢ Designed for change with the following characteristics:
¢ Loose coupling
¢ Resilient and fault tolerant
¢ Scalable
¢ Manageable
¢ Observable
¢ Adhere to the 12-factor app methodology
¢ CNCF Cloud-native definition states:
Cloud-native
Microservices & APIs
CI / CD
DevOps
Containers
… loosely coupled systems that are resilient, manageable,
and observable. Combined with robust automation, they allow
engineers to make high-impact changes frequently and
predictably with minimal toil.

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CLOUD-NATIVE IS NOT JUST ABOUT CLOUD, IT’S ABOUT…
Cloud-native app development - the new normal 6
¢ Designing apps to run in scalable, dynamic environments
¢ On-premises
¢ Public or private Cloud
¢ Implementing applications that are portable across different platforms
¢ Leveraging the capabilities of the underlying runtime platforms
¢ Focus on business requirements
¢ Faster time-2-market
¢ Increased Developers productivity

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TRADITIONAL VS. CLOUD-NATIVE SYSTEMS
Cloud-native app development - the new normal 7
¢ Single Deployment unit
¢ Single execution process
¢ Shared database
¢ Local, app-internal communication only
¢ Multiple Deployment units
¢ Exclusive execution process per service
¢ Database per Service (usually)
¢ Remote, inter-service communication
UI
Business
Logic
Persistence

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Cloud-native app development - the new normal 8
WAY TO CLOUD-NATIVE
https://opitzcloud.canto.global/b/M0IQC

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ACHIEVE LOOSE COUPLING THROUGH API DESIGN-FIRST APPROACH
Cloud-native app development - the new normal 9
¢ Synchronous APIs (it’s not just REST!)
¢ REST (OpenAPI)
¢ GraphQL
¢ gRPC
¢ Asynchronous APIs (preferred)
¢ Async API
¢ Data description with
¢ Protobuf
¢ Avro
¢ JSON Schema

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APIS SHOULD DELIVER BUSINESS VALUE!
Efficient API delivery with APIOps 10
¢ Focus on potential consumers
¢ How will a consumer use my API?
¢ What kind of resources and operations are
needed by the consumers?
¢ …
¢ APIs should be consumer-centric and thus
be consumable
¢ Well-designed, secured and compliant
¢ Documented, discoverable and accessible
¢ Performant, reliable and scalable
Source: https://konghq.com/blog/what-is-apiops/
Compliant
Functional Findable
The intersection of the three
characteristics defines
consumable APIs!

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SPEED UP APP DELIVERY BY AUTOMATING THE DELIVERY PIPELINE
Cloud-native app development - the new normal 11
¢ Assumes no cycles and concentrates on the main process from commit to production
Commit Stage Build Stage
Automated
Verification
Stage
Deploy to
staging
environments
Manual
Acceptance
Test
Load Test /
Performance
Test
Security Test
Deploy to
prod
environments
Release
Code Pipeline Deployment Pipeline
¢ Ensure Software is always releasable
¢ Runs less often, only if software is
guaranteed to be working
¢ Feedback cycles often days up to 2-4 weeks
¢ Runs often
¢ Feedback cycles 10-15 min
Continuous Delivery Continuous Deployment
¢ Automatic deploy
and release to prod
¢ Needs to eleminate
manual steps in
continuous delivery

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SHIFT-LEFT: CLOUD-NATIVE REQUIRES CHANGED DEVELOPER
MINDSET
Cloud-native app development - the new normal 12
¢ More responsibility on the developer side
¢ Move tasks from later stages to earlier stages in the pipeline to shorten cycle time
¢ Identifying issues earlier in the pipeline makes it cheaper to address issues
¢ Ensure quality earlier in the pipeline

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Cloud-native app development - the new normal 13
FREEDOM OF CHOICE –
DEVELOPERS NEED TO EMBRACE TECHNOLOGY
https://landscape.cncf.io/

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CNCF CLOUD-NATIVE TRAIL MAP
Cloud-native app development - the new normal 14
Source: https://github.com/cncf/trailmap

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Cloud-native app development - the new normal 15
https://opitzcloud.canto.global/b/QN7DH
CLOUD-NATIVE APPLICATION PLATFORM (BASED ON OCI)

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CLOUD-NATIVE APPLICATION PLATTFORM IN THE CLOUD
Cloud-native app development - the new normal 16
¢ All major Cloud providers provide respective services
¢ Cloud-native development platform should at least consist of:
¢ Source Code Management (Git)
¢ Artifact / Container Management
¢ Build tools (CI / CD Pipelines)
¢ Cloud-native runtime platform should at least consist of:
¢ Event Hub (Kafka)
¢ Container Engine (Managed Kubernetes)
¢ API Gateway
¢ Functions-as-a-Service platform (Serverless architectures)
¢ On top respective Observability tooling for operating cloud-native apps is needed

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Cloud-native app development - the new normal 17
Oracle Cloud Infrastructure (OCI)
(Network, Compute, Storage, etc.)
Oracle Cloud Native Services
Container
Engine for
Kubernetes
(OKE)
API Gateway Functions Streaming
Application Runtime
Container
Registry
(OCIR)
Resource
Manager
Application Development
Artifact
Registry
DevOps
Monitoring
Logging
Events
Application Operations
Notifications
Application
Performance
Monitoring

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OCI CLOUD-NATIVE EMBRACES OPEN SOURCE AND OPEN
STANDARDS
Cloud-native app development - the new normal 18
¢ Oracle is a CNCF member and actively contributes to the Open source community
¢ Helidon
¢ Micronaut
¢ GraalVM
¢ Kubernetes (Weblogic Operator, Database Operator)
¢ OCI Services supports, integrated with and is build upon open standards and tools provided by
CNCF
¢ Open API
¢ Open Telemetry
¢ Open Tracing
¢ CloudEvents
¢ FluentD
¢ Prometheus
¢ Grafana
¢ Kafka
¢ …

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DEMO CASE: CLOUD-NATIVE MICRONAUT APP DEVELOPMENT WITH
OCI
Cloud-native app development - the new normal 19
OKE
Resource
Manager
OCI
API Gateway
DevOps
Container
Registry
Artifact
Registry
Developer
Push code change
Publish Build
artifacts
Push Container
images
Trigger
Deployment
Pull Container
image
Trigger
infrastructure
provisioning Deploy OKE cluster
(and related
resources)
Consumer
Events
Notifications
Publish
events
Consume
events
Send notification
Call API service

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Cloud-native app development - the new normal 32
CONCLUSION
https://opitzcloud.canto.global/b/SPU2S

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MOVEMENT TO ARCHITECTURES THAT ARE DESIGNED FOR CHANGE
Cloud-native app development - the new normal 33
¢ Move away from
¢ Classic and monolithic application design
¢ Centralized application teams
¢ Manual application delivery
Source: https://konghq.com/resources/digital-innovation-benchmark-2021/

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KEY TAKEAWAYS
¢ New Apps should be built in a Cloud-native fashion
¢ Apps should be based on open source and open industry
standards
¢ Containers, DevOps and APIs are basic building blocks
¢ Cloud-native development requires mindest change
¢ Shift-left – more responsibility on developers
¢ Devs should embrace technology (even unknown ones)
¢ API design-first is important for consistent, intuitive API
design
Cloud-native app development - the new normal 34
DEV

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Cloud-native app development - the new normal 35
Q & A
https://opitzcloud.canto.global/b/H0EMG

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IN CASE OF ANY QUESTIONS…
Cloud-native app development - the new normal 36
Sven Bernhardt
Chief Architect / Integration Evangelist |
Kong Champion | Oracle ACE Pro
OPITZ CONSULTING Deutschland GmbH
Kirchstrasse 6, 51647 Gummersbach, Germany
Phone: +49 172 2193529
Mail: sven.bernhardt@opitz-consulting.com
Twitter: @sbernhardt
Blog: https://svenbernhardt.wordpress.com