Network-based Architectures Fowler, Fielding, and Haussmann The - - PowerPoint PPT Presentation

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Network-based Architectures Fowler, Fielding, and Haussmann The - - PowerPoint PPT Presentation

Apr 20, 2023 236 likes •797 views

Eric Horesnyi | streamdata.io Network-based Architectures Fowler, Fielding, and Haussmann The Digital gap @StreamdataIO #JAXLondon Haussmann & Fielding 1853, Paris 2000, Irvine @StreamdataIO #JAXLondon Haussmann Fielding and

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Eric Horesnyi | streamdata.io

Network-based Architectures

Fowler, Fielding, and Haussmann

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The « Digital » gap

@StreamdataIO #JAXLondon

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Haussmann & Fielding

1853, Paris 2000, Irvine @StreamdataIO #JAXLondon

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CHALLENGES IN PARIS,1853

Haussmann Fielding and Fowler

@StreamdataIO #JAXLondon

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High Dropout

Cholera, 1832 – 19,000 dropout @StreamdataIO #JAXLondon

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Congestion

1hab/sq mt density @StreamdataIO #JAXLondon

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Slow & Unsecure

Security threats: No inspection possible

  • bscure streets

No patches to remove viruses and threats lack of air circulation Poor latency: slow access lines narrow streets

Street in Ile de La Cité Early XIXth

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Unstable system

Full reboot 1789, 1815, 1830, 1848… No backward compatibility No service desk Restricted vote DDOS in small access lines Barricades

Liberty Leading the People, July 28th, 1830' by Delacroix

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INHERITED FEATURES HTTP//PARIS 1789-1853

Haussmann Fielding Fowler

@StreamdataIO #JAXLondon

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Inherited Properties

@StreamdataIO #JAXLondon

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DNS

.gov, .com and .fr follow same scheme Seine is .root Streets start there Right/even Left/Uneven Paris street numbering, 1805

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Famous heritage

Napoleon, France 1804 Tim Berners-Lee, CERN ‘90

Comment: // limited to ability to establish basic rules. I do not admire Napoleon for anything else.

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Separation of concerns

Client Server @StreamdataIO #JAXLondon

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Stateless

All clients are treated equal, no special treatment, no segregation

Palais de Justice, Ile de la Cité

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Stateless

Client access server via a network call

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SELECTION OF PROPERTIES

FIELDING // HAUSSMANN REST // PARIS

Haussmann Fielding Fowler

@StreamdataIO #JAXLondon

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Mission

Network performance throughput, small

  • verhead, bandwidth

User-perceived performance latency, and completion Network-efficiency avoid using the street too much. Homeworking

Napoleon III describing his mission to Haussmann, 1853

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KPIs Haussmann // Fielding

Scalable make it possible for Paris to grow Simple no need for a city-user manual, Modifiable ability to evolve in the future through change Extensible add new neighborhood Customizable specialize a building without impacting others Configurable easily modify a building post-deployment Reusable building can host a bakery then a cremerie Visible to provide best security and auditability Portable style should work well in other regions Reliable susceptible to failure (no single event could stop water, gas or circulation for citizens) @StreamdataIO #JAXLondon

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P1: Low-Entry Barrier

A popular neighborhood in Paris @StreamdataIO #JAXLondon

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P2: Extensibility

Streaming = Paris Metro/Subway, 1900 @StreamdataIO #JAXLondon

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P3: Distributed Hypermedia

@StreamdataIO #JAXLondon

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P4: Anarchic Scalability

Paris Metropole today, 10m+ people @StreamdataIO #JAXLondon

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P6: Independant Deployment

Ile de La Cité restructured, embedding legacy/sacred Notre Dame @StreamdataIO #JAXLondon

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WHY HAUSSMANN DECIDED TO MAKE PARIS RESTFUL

Haussmann Fielding Fowler

@StreamdataIO #JAXLondon

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REST=LCODC$SS&UI

CSS=Client-Server-Stateless

@StreamdataIO #JAXLondon

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Layer 1: sewage & gas

@StreamdataIO #JAXLondon

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Layer 2: street & boulevards

@StreamdataIO #JAXLondon

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Layer 3: roofs

@StreamdataIO #JAXLondon

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Layered Networks

Within a layer, a component connects to its neighboor Between two layers, gateways allow for interaction Each layer is autonomous

@StreamdataIO #JAXLondon

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Cache

700 concurrent clients 80,000 in cache 2m records @StreamdataIO St Geneviève Library, 1850

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Cache

Opera, a server with cache

#Tech2Day

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Code On Demand

Les Halles, setting the tone for all restaurants in the City @StreamdataIO #JAXLondon

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Uniform Interface = Genious

Codified UI, by floor (header), with token/key, proxy, cache @StreamdataIO #JAXLondon

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Uniformity = beauty inside

Uniformity in APIs brings harmony in UX @StreamdataIO #JAXLondon

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Uniformity = pattern beauty

Uniformity brings fractal harmony: still there from a distance @StreamdataIO #JAXLondon

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HAUSSMANN // FOWLER AS URBANISTS

Continuous Delivery & Microservices

#Tech2Day

@StreamdataIO #JAXLondon

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Continuous Delivery

Resilient Water Induction, requiring aqueducts and reservoirs @StreamdataIO #JAXLondon

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Continuous Delivery

Aqueduct, Arcueil Reservoir, Arcueil @StreamdataIO #JAXLondon

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Microservices

Not too big Autonomous components Own API Standard protocol Scalable

@StreamdataIO #JAXLondon

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Zoning

Quartier Panthéon, a zone dedicated to “The Big Men”

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Lead by example

Opera, an Hypermedia API > great UX >>> traction for API owners

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Cut Corners

Haussmann corners: Most difficult piece & beautiful

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Polyglot

XVIII architecture encapsulated, if API complies @StreamdataIO #JAXLondon

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PARIS 160 YEARS LATER HTTP REST 16 YEARS LATER

Sustainable systems?

@StreamdataIO #JAXLondon

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UX performance

City of Lights: 20m unique visitors a year

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Reproductible

Chicago after the Burnham Plan, designed in 1909

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Durable

Courneuve, 1986, 20y lifespan Monolith

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Evolvable

Tour Eiffel under construction, evolution built years after Haussmann had left office

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DAYTODAY LIFE IN A RESTFUL CITY

Haussmann Fielding Fowler

@StreamdataIO #JAXLondon

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Incomplete Protocol: Velib

Leverage reusable assets Share same layer as existing traffic But incomplete protocol: collisions, missing RFC for cars Rate-limited API, realtime difficult

@StreamdataIO #JAXLondon

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Error Handling in your code

Gare Montparnasse, 1895 –HTTP or REST does not prevent from good error handling, contrib @rit

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HTTP//PARIS DICTIONARY, MAPS & RESSOURCES

Haussmann Fielding Fowler

@StreamdataIO #JAXLondon

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Glossary

Code Civil HTTP Paris Web Boulevards Internet Backbone Streets Access Lines Street Numbers URI Light in the streets Authentication Concierge Proxy Library Cache Carriage Request/Response Subway/Metro Streaming Homeworking Diff update// JSON Patch Pierre de Carrière JSON Compagnon du Devoir API Developer Haussmann Architect Beaux Arts JS Developers Façade API Haussmann Façade RESTful API Utilities Cloud/PaaS Annonces Parisiennes Criteo Grands Magasins Amazon Opera Deezer Theaters Netflix Prefecture NSA Bibliotheque Nat. Wiki Senat W3C Assemblee Nationale IETF Louvre Pinterest Bois de Boulogne MineCraft Bois de Vincennes Facebook Bon Marché Ebay Eiffel Tower Twitter Latin Quarter Udacity, Coursera Left bank spirit Android Right bank spirit Apple iPhone

@StreamdataIO #JAXLondon

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Resources

Paris Architecture & Urbanism: Musée Carnavalet, Cité Chaillot Haussmann: Haussmann à Paris : Architecture et urbanisme Seconde moitié du XIXe siècle, Book, 2012 HTTP: Tim Berners-Lee & Team, Cern, 1990 REST: Network-Based Architecture Style, Thesis, Fielding 2000 Continuous Delivery : Farley & Humbl, 2010 Microservices : Microservices in a Nutshell, Fowler & Lewis, Thoughtworks, 2014 Web Corp Organization: How Google Works, Eric Schmidt, 2014 Design & UX : Jonathan Ive, Apple by The New Yorker, 2015 Microservices Building Microservices, Sam Newman, O’Reilly Book, 2015