The API Facade Pattern: Overview - Episode 1

API Façade: OverviewEpisode 1Webinar ShortsMarch 2012 SeriesBrian Mulloy Apigee@landlessness @apigee

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Webinar Shorts - March 2012 New!Episode 1The API Facade: OverviewTuesday, March 6thEpisode 2The API Facade: Common PatternsTuesday, March 13thEpisode 3The API Facade: TechnologyTuesday, March 20thEpisode 4The API Facade: PeopleTuesday, March 27th

Episode 1 Topics• The Goal• The Problem• The Anti-Patterns• The Solution• How To• Benefits

The Goal

App App App World of API Internal App APIUser Store Developer APIs Team Systems

The Problem

System of RecordVirtues• Stable• Dependable• Runs the BusinessVices• Legacy Technology Big• Interdependencies• Slowly Changing System

Content Big DB Management JDBC RSS SOAPSystem

The Anti-Patterns

Anti-pattern #1Build UpVirtues XML• Version 1• Quick Expose Objects• Understood by Internal DevsVices• Fine-grained Big• Confusing to App Devs System• Inflexible

Anti-pattern #2 StandardsStandards Committee DocVirtues• Version 1• Sense of Unification• ComprehensiveVices• Slow XML XML XML• Lack of Adherence Expose RSS Expose Objects Expose Tables• Mediocre or Multiple Designs Content Big System DB Management• Subject to Interpretation

Anti-pattern #3 Competitor’sCopy Cat API DocsVirtues• Version 1• Quick• App Dev FamiliarityVices• Not Differentiated XML XML XML• Value Not Expose RSS Expose Objects Expose Tables Leveraged Content Big System DB Management

The Solution

API Team Product CommunityEngineers Operations QA Architect Manager Manager

API Façade

App App Developer API Facade Content Big DB Management JDBC RSS SOAPSystem

“ Use the façade pattern when you want to provide a simple interface to a complex subsystem. Subsystems often get more complex as they evolve.

How To

1. Design the Ideal API2. Implement Design with Stubs3. Mediate between Façade and Systems

One Big Problem 1. Build up from systems of record App XML XML XML XML XML XML1. Objects Tables RSS RSS Tables RSS Content Big DB Management JDBC RSS SOAP System

Three Small Problems 1. Design the Ideal API 2. Implement Design with Stubs as Façade App 3. Mediate between Façade and Systems Developer1. Ideal Design2. API Facade3. Mediate Content Big DB Management JDBC RSS SOAP System

Façade as Gateway• Handle Common Patterns• Authenticate & Authorize• Version• Store Data for Analysis

The Benefits

Adapt to Use CasesInternal Partners Customers Open

Keep Pace with DevelopersApp App App World of API Internal App APIUser Store Developer APIs Team Systems

Extensible AND Consistent API API Facade Content DB Management SOAP JDBC

Enterprise API Engine Internal Open Partners Customers

Questions?

THANK YOUSubscribe to API webinars at:youtube.com/apigee

THANK YOUIRC#api-crafton freenode

THANK YOUQuestions and ideas to:groups.google.com/group/api-craft

THANK YOUContact me at:@landlessnessbrian@apigee.com

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The API Facade Pattern: Overview - Episode 1

by Apigee on Mar 06, 2012

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