My Slides fro API centric microservices Architecture for #Devoxxma

1. API centric microservices
Architecture
Christina Lin
@christina_wm

2. A Little About Me
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Technical
Marketing
Manager
● Workshops
● Demos
● Blogs

3. Application Programming Interface - WHY?
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● RESTful API
Contract
● Reusability
● Easy Adoption
● Simple
implementation
JSON
XML

4. API in Monolith
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Partner App Others

5. The Bigger picture
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SVC SVC SVC SVC
SVC SVC SVC SVC
SAAS
SAAS
SAAS
S
O
A
P

6. Microservices
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microservice ● Simple,small
● Boundary and Replaceable
● Independence
● Isolated Failure
● Scale
microservice microservice microservice

7. Microservices
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Partner App Others
microservice
microservice
microservice
microservice
microservice
microservice
microservicemicroservice
microservice
microservice
microservice
microservice
microservice
microservice
microservice
microservice
microservice
microservice
microservice
microservice

8. Three key drivers to modern architecture
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Events
Event Distribution, Data streaming,
Distributed Microservices
Content transformation, Service orchestration,
Split/Aggregate, Content routing
Interface
Contract negotiation, Service Adaptability,
Time to market, Monetization

9. #Hashtag@twitter
AGILITY

10. CLOUD NATIVE ARCHITECTURE
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Core Layer
External Applications
Application Network Layer
Containers
ContainerOrchestration
Composite
Layer Service Interactions
Cloud Native
App (Runtime 1)
Enterprise Integration Patterns
Cloud Native
App (Runtime 2)
Anti
Corruption
Layer
Containerized App
(Lift and Shift)
SecurityServices
DataServices
Traditional
App
VMs
APIManagement
Policies Access Control Proxy Routing
Service Composition Events Mesh
DevOps Automation / Continuous Integration / Continuous Delivery (Ansible)

11. The Composite Layer
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Composite Layer
Service Composition
Cloud Native
App (Runtime 1)
Cloud Native
App (Runtime 1)
Cloud Native
App (Runtime 1)
Customizer Customizer Customizer
Service Composition
Events
Mesh
Cloud Native
App (Runtime 1)
Cloud Native
App (Runtime 1)
Service Composition Service Composition
API

12. API DEVELOPMENT - CODE FIRST
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Backend
Services
Integrate and
implement
service
Provide
Contract for
consumers
Back and forth
testing and
negotiating
Back and
forth update
changes

13. API DEVELOPMENT - CONTRACT FIRST
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Backend
Services
Integrate and
implement
contracts
Back and forth
testing and
negotiating

14. API DEVELOPMENT
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Bounded Context
Bounded Context
External Gateway
CONTRACT-FIRST
CODE FIRSTBrown Field

15. API DEVELOPMENT
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CONTRACT
OpenAPI Specification
IMPLEMENTATION
REST DSL
Transform
Route
MOCKING
Example, Testing

16. Distributed Microservices
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Container Container Container
Container Container Container
Container
SAGA for orchestrating
APIs
idempotency
Transforming XML
to JSON
Splitting Data

17. The Saga Pattern
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Service One Service Two Service Three Service Four
compensation compensation compensationcompensation

18. API DEVELOPMENT
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CONTRACT
OpenAPI Specification
IMPLEMENTATION
REST DSL
Transform
Route
MOCKING
Example, Testing

19. Distributed EVENTS and DATA - Traditional
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Monolithic Application
Reservation
Seating Status
Applicant Logistic
Analytic
Transactions
● Maintenance issue due to
application dependency
complexity.
● Can’t Scale
● Single point of Failure/Bottleneck
● Long development cycle

20. Distributed EVENTS and DATA
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Data Source
MQTT
AMQP
TCP
Processing
Business Logic
Batch Analytics
Complex Event Processing
System of Records
Streaming
EVENT LOG
BROADCAST
GUARANTEE
DELIVERY
TOPIC
STREAMS
QUEUE
Store
RDBMS
NOSQL
BIG DATA
Normalization/DE
SUBSCRIBE
DATA FORMAT
TRANSFORM
EXTRACTION
CQRS

21. API LIFE CYCLE
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CONTROL
➔ Security
➔ Key management
➔ Rate limiting
➔ Policy enforcement
➔ User management
➔ Provisioning
VISIBILITY
➔ Analytics
➔ App tracking
➔ User tracking
➔ Traffic alerts
➔ Engagement
➔ Developer support
MANAGEMENT
➔ Testing
➔ Release
➔ Versions
➔ Deployment
➔ SLA
LIFECYCLE

22. Application Network Layer
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Application Network Layer
Access Control
Proxy Routing
API
Billing
Analytics
Adoption
Policy

23. Application Networking Problems
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Service Discovery
Retries
Timeouts
Load Balancing
Rate Limiting
Thread bulkheading
Circuit Breaking
Reliability
Edge/DMZ Routing
Surgical/fine/per-request
routing
A/B rollout
Traffic shaping
Internal release /dark launch
Request shadowing
Fault Injection
Controlled Deployment
Adaptive, zone aware
Deadlines
Health checking
Stats, metrics collection
Logging
Distributed Tracing
Security
Observability

24. #Hashtag@twitter
Integration Code
Circuit Breaking
Security
Retries
Versioning
Integration Code
Circuit Breaking
Security
Retries
Versioning
Integration Code
Circuit Breaking
Security
Retries
Versioning
Integration Code
Circuit Breaking
Security
Retries
Versioning

25. #Hashtag@twitter
A service mesh is decentralized application-networking infrastructure
between your services that provides resiliency, security, observability,
and routing control.
A service mesh is about connecting your applications.
Composite Layer
Service Composition
Cloud Native
App (Runtime 1)
Cloud Native
App (Runtime 1)
Cloud Native
App (Runtime 1)
Customizer
Service Composition
Mesh
Cloud Native
App (Runtime 1)
Cloud Native
App (Runtime 1)
Service Composition

26. Istio Service Mesh Overview
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HTTP1.1, HTTP2, gRPC, TCP w/TLS
istioctl, API, config Quota, Telemetry
Rate Limiting, ACL
CA, SPIFFE
POD
SERVICE A
Istio Proxy
POD
SERVICE B
Istio Proxy
POD
SERVICE C
Istio Proxy
Pilot Telemetry/Policy Citadel
HTTP1.1, HTTP2, gRPC, TCP w/TLS
Data Plane
Control Plane
Istio
Control
Plane

27. The Demo
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Ballot
Governor
Senator
Referendum

28. Service Mesh
The Demo
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Governor Senator Referencdum
Election
API Management
V1, V2

29. Implementing API centric architecture
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Service Mesh
Network resiliency, Security
Policy enforcement, Metric collection, Load balancing
Deployment Platform
Instance Placement, Scaling/Auto Scaling
Resource usage, Job Scaling
Application
Content transformation, Service call orchestration
Split/Aggregate, Content routing
Application
Concerns
Infrastructure
Concerns
API
API Contracts, Monetisation, Business strategic policy enforcement
Partner ecosystem
Interface
Concerns

30. Recap
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Core Layer
External Applications
Application Network Layer
Containers
ContainerOrchestration
Composite
Layer Service Interactions
Cloud Native
App (Runtime 1)
Enterprise Integration Patterns
Cloud Native
App (Runtime 2)
Anti
Corruption
Layer
Containerized App
(Lift and Shift)
SecurityServices
DataServices
Traditional
App
VMs
APIManagement
Policies Access Control Proxy Routing
Service Composition Events Mesh
DevOps Automation / Continuous Integration / Continuous Delivery (Ansible)

31. #Hashtag@twitter
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