Fault Tolerant UX - Speaker Deck

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FA U LT T O L E R A N T U X D A N G E B H A R D T @ d g e b

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& > < > a > z in r O m D > 30 3

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< M A R K U P / >

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FA U LT T O L E R A N C E U X F I R S T

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FA U LT T O L E R A N T U X = = T R A N S A C T I O N A L U X

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T R A N S A C T I O N A L U X • Atomic • Consistent • Isolated • Durable

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AT O M I C “ A L L O R N O T H I N G ”

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C O N S I S T E N T M O V E S B E T W E E N VA L I D S TAT E S

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I S O L AT E D A L L O W S C O N C U R R E N T C H A N G E S

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D U R A B L E C H A N G E S P E R S I S T

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A p p l i c a t i o n s M U S T N O T V i o l a t e t h e R u l e s o f Tr a n s a c t i o n a l U X O R E L S E

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FA U LT T O L E R A N T U X = = F O R G I V I N G U X

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A p p l i c a t i o n s S H O U L D Tr y t o P ro v i d e a F o rg i v i n g U X ~ p l e a s e ~

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T R A N S I T I O N A L P E R S I S T E N C E

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U N D O / R E D O

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O F F L I N E S U P P O RT

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[ Offline ] Ember ToDos

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A S Y N C H R O N O U S ( N O N - B L O C K I N G ) I N T E R FA C E

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Syncing… Ember ToDos

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E N G I N E E R I N G FA U LT T O L E R A N C E

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E M B E R P R O V I D E S S I M P L E , E L E G A N T PAT T E R N S F O R B U I L D I N G A C O N S I S T E N T U X

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E M B E R D ATA P R O V I D E S S I M P L E , E L E G A N T PAT T E R N S F O R B U I L D I N G A C O N S I S T E N T + D U R A B L E U X

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E M B E R D ATA Atomic Consistent Isolated Durable = R E Q U I R E S C U S T O M I Z AT I O N Transitional Persistence Undo / Redo Offline Support Asynchronous Interfaces

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R E T H I N K A S S U M P T I O N S A N D P R I M I T I V E S

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DISPARATE SOURCES

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DISPARATE DATA

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COMMON INTERFACES

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NORMALIZED DATA

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EVENTED CONNECTIONS

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PROMISIFIED METHODS doThing

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A S TA N D A L O N E L I B R A RY F O R C O O R D I N AT I N G A C C E S S T O D ATA S O U R C E S A N D K E E P I N G T H E I R C O N T E N T S S Y N C H R O N I Z E D .

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PRIMARY INTERFACES { } REQUESTABLE TRANSFORMABLE

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REQUESTABLE find add remove update patch findLink addLink removeLink findLinked

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TRANSFORMABLE transform(operation)

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NORMALIZED DATA JSON Patch transformations: [{"op":"remove",! "path":["planet","f82eed41-3e63-4061-953f-23f74192dcdd"]}! {"op":"add",! "path":["planet","107dc357-7df5-422f-b9d7-817244716e86"],! “value”:{“name”:”Mercury",! "id":"107dc357-7df5-422f-b9d7-817244716e86"}}]!

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CONNECTORS { } REQUEST TRANSFORM

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SYNCHRONOUS EVENT HANDLING 1 2 3 4 5 6

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1 2 3 4 5 6 7 ??? P P = Promise SYNCHRONOUS EVENT HANDLING

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PROMISE-AWARE EVENTS 1 2 3 4 5 6 7 8 P P P P P = Promise Async Blocking

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PROMISE-AWARE EVENTS 1 2 3 ??? 4 5 6 7 P = Promise P P Async Non-Blocking

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COMMON LIBRARY

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{ } MEMORY JSON API LOCAL STORAGE + MORE + ORBIT COMMON LIB   SOURCES

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{ } MODELS KEYS RELATIONSHIPS + MORE + ORBIT COMMON LIB   SCHEMA

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+ = ember-orbit

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EO.Store all filter retrieve ! find add remove patch findLink addLink removeLink { } { } Synchronous Asynchronous ember-orbit

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Star = EO.Model.extend({! name: attr('string'),! planets: hasMany('planet', {inverse: 'sun'})! });! ! Planet = EO.Model.extend({! name: attr('string'),! classification: attr('string'),! sun: hasOne('star', {inverse: 'planets'})! }); EO.Model ember-orbit

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URLS DRIVE APPLICATION STATE

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SOURCES DRIVE MODEL STATE ember-orbit

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A P P L I C AT I O N PAT T E R N S

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CLIENT-FIRST DEVELOPMENT

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PLUGGABLE SOURCES

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DATA SYNCHRONIZATION

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EDITING CONTEXTS

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UNDO / REDO

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Twitter: @orbitjs  IRC: #orbitjs  Github: https://github.com/orbitjs Soon: orbitjs.com

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T H A N K S ! @ d g e b