The document discusses API-first microservice development and developer tooling for Kubernetes. It begins with background on monolith architectures and self-contained systems (SCS), where each SCS contains its own user interface, business logic, and data storage. It notes SCS should integrate via web interfaces to minimize coupling. The document then addresses problems with container-native development, like service discovery and resiliency, which service meshes like Istio aim to solve. It presents examples of an open-source SCS demo and observability tools for SCS. Finally, it outlines an API-first development lifecycle and shows an API registry SCS architecture.

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API-first Microservice Development
Developer Tooling for Kubernetes
Mark W. Foster, Microservices Platform Architect

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A little architectural background
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Monoliths and Self-contained (Distributed) Systems
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Self-contained Systems (SCS)
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An SCS contains its own
user interface, specific
business logic and
separate data storage
http://scs-architecture.org/

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Self-contained Systems (SCS)
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The business logic can consist of
microservices to solve domain
specific problems.
http://scs-architecture.org/

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Self-contained Systems (SCS)
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Inside of a self-contained system a bunch of
technical decisions can be made independently
from other systems, such as programming
language, frameworks, tooling or workflow.
http://scs-architecture.org/

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Self-contained Systems (SCS)
7
Self-contained Systems
should be integrated over
their web interfaces to
minimize coupling to other
systems.
http://scs-architecture.org/

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Monoliths and Self-contained (Distributed) Systems
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Monoliths and Self-contained (Distributed) Systems
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Built on Oracle – Taming Complexity
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Today’s problems with container native development
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COMMON API AND SERVICES
CI/CD
MANAGED KUBERNETES
JAVA MICRO SERVICES
DIAGNOSTICS
• Kubernetes (K8S) provides application infrastructure for modern cloud-
native applications, but leaves much of distributed system
management to application authors:
• Rapid Prototyping
• Service/API Discovery
• Back off/Retry and Idempotency
• Resiliency/Circuit Breakers
• Policy and Enforcement
• Diagnostics
• Much as in the SOA days, new technologies are emerging to outsource
this complexity from applications: service meshes (Istio/Linkerd)

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Istio Service Mesh Architecture
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https://istio.io/docs/concepts/what-is-istio/overview.html

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OSS SCS Demo
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Observability Tools SCS
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Grafana Zipkin UI Vizceral
Vizceral MSMicroservices
UI

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API-First Lifecycle
15

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API-First DX: API Registry SCS
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Registry UI
api-server
etcdData
Microservices
UI
converter mocker generator registry

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Q&A
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