towards micro-services & api-centric application development · towards micro-services &...

Towards Micro-services & API-CentricApplication DevelopmentDr. Yih Leong Sun, Intel Corporation

October 26th Wednesday, 3:05pm-3:45pmOpenStack Summit – Barcelona, Spain

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Introduction

2

Yih Leong Sun, PhDSenior Software Cloud ArchitectIntel Open Source Technology Centeryih.leong.sun@intel.com

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AgendaBusiness Drivers

Architecture

OpenStack* Services/API

Example

Summary

*Other names and brands may be claimed as the property of others.

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Business Drivers

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Why do We need Micro-services & API Architecture

Rapidly changing & competitive environment

Innovation & market opportunity

Integration with existing system

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Architecture

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Monolithic ArchitectureApp

WAR

Faculty

Course

Student

Database

MySQL

Web

Apache

App

WAR

Faculty

Course

Student

App

WAR

Faculty

Course

Student

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Service-Oriented-Architecture (SOA)

FulfillmentService

InventoryService

OrderService

CustomerService

PaymentService

CatalogService

ReportingService

CMS Warehouse Payment GatewayShipping

Web Portal Mobile POS Admin

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Service-Oriented-Architecture (SOA)

exposing software through web services

WS-* standardsXML over HTTP

asynchronous messaging to transfer documents

Service Bus

UDDI

reusable business servicesSOAP

WSDL

BPEL

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Micro-services

FacultyService

• Making SOA easier

• Independent

• HTTP(S) / REST

• Lightweight

CourseService

StudentService

MySQL MongoDB MySQL

API Gateway

REST API REST API REST API

POST /studentGET /faculties/<faculty-id>

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Micro-services Patterns

Service DiscoveryCommunication

Deployment of ServicesData Management

DB1DB2

DB3S1

S2 S3

MessagingREST Client

Server

Micro-servicesArchitecture

HTTP

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Benefits

• Modularity

• Isolation

• Mix of technologies

Challenges

• Complexity in distributed architecture

• Many deployments

• Eventually consistent(CAP theorem*)

Micro-services Benefits & Challenges

*Ref: http://dl.acm.org/citation.cfm?id=564601

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CAP Theorem

Availability

Partition Tolerance

Consistency

ACID+

Eventually Available

BASE+

EventuallyConsistent

Pick2

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OpenStack* Services/API

*Other names and brands may be claimed as the property of others.

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https://www.google.com/#q=immutable

Config Changes

Application Updates

Package Updates

15

micro-services & OpenStack* Services/API

VM

VM

VM

Immutable Infrastructure

VMrev1

VMrev2

*Other names and brands may be claimed as the property of others.

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micro-services & OpenStack* Services/APIInfrastructure as Code

Service A

DBMySQL

Service A

Instance1 Instance2

Service B

DBMySQL

Service B

Instance1 Instance2

Service C

DBMySQL

Service C

Instance1 Instance2

*Other names and brands may be claimed as the property of others.

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micro-services & OpenStack* Services/APIAPI-driven infrastructure

VM

App Code

VM

Ops

Do something

VM VM

Do something

Object StorageStorage

App Code

API

API

Ops

?

*Other names and brands may be claimed as the property of others.

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Example

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Online Video Platform - Transcoding

Requirements

• Users upload media files

• Transcode video file to multiple formats for various devices/display

• Geographical locations

• Budget

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Online Video Platform - Transcoding

ApplicationApplication

Application

Web

Shared File Storage

Web

Database

Web

Transcode PlaybackUpload

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Online Video Platform - TranscodingPOST /src/<file>

POST /transcode/<job>Upload UI Transcode UI Playback UI

TranscodeService

Object StorageREST/API

TranscoderTranscoder

TranscoderResource Manager

REST/API

Object StorageREST/API

GET /transcode/<job>

GET /dest/<file>

PlaybackService

UploadService

API Gateway

REST/APIREST/API

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Summary

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we have DISCUSSED…Different architecture

Micro-services patterns and challenges

OpenStack cloud-based infrastructure

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QUESTIONS / Feedback

yih.leong.sun@intel.com

@yihleong

#CloudApp

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