DevoxxFR 2016 - Paris is resilient: Network-Based Architectures: Haussmann, Fielding & Fowler

Devoxx France 2016
Paris a été restructurée dans les années 1860s, en adoptant un style architectural orienté réseau, au sens de Fielding. Pour le bénéfice de ses habitants d'alors et d'aujourd'hui. Avec 3 couches de réseau, des façades normées comme une API Rest, et un protocole (HTTP) en évolution constante, Paris est un système résilient permettant une croissance anarchique, évolutive et hypermedia. D'un enchevêtrement de rues médiévales, Paris est devenu la Ville Lumière en moins de 20 ans, et reste la ville la plus visitée au monde. Haussmann a restructuré la ville et revisité ses protocoles pour la transformer en aggrégat de microservices polyglotes et respectueux des Monuments, ces "legacy systèmes" souvent sacrés. Exemple d'urbanisme qui peut inspirer les architectes SIs souhaitant passer en architecture de micorservices. Ode à la beauté d'une ville civilisée et résiliente, au mode de vie hypermedia fruit de la volonté de ses citoyens.

Transcript

1. #DevoxxFR @erichoresnyi #DevoxxFR @erichoresnyi Paris est résilient Network Based Architectures Haussmann, Fielding, Fowler Eric Horesnyi @StreamdataIO #softshake
2. #DevoxxFR @erichoresnyi The « digital » gap
3. #DevoxxFR @erichoresnyi The civilization gap
4. #DevoxxFR @erichoresnyi Haussmann & Fielding 1853, Paris 2000, Irvine
5. #DevoxxFR @erichoresnyi CHALLENGES IN PARIS IN 1853 Paris est résilient @StreamdataIO
6. #DevoxxFR @erichoresnyi Dropout Cholera, 1832 – 19,000 dropout
7. #DevoxxFR @erichoresnyi Congestion 1hab/sq mt density
8. #DevoxxFR @erichoresnyi Slow & Unsecure Security threats: No inspection possible obscure streets No patches to remove viruses lack of air circulation Poor latency narrow streets No backbone Rue Saint Medard
9. #DevoxxFR @erichoresnyi Unstable system Full reboot 1789, 1815, 1830, 1848… No backward compatibility No service desk Restricted vote DDOS in small access lines Barricades @StreamdataIO Liberty Leading the People, July 28th, 1830' by Delacroix La Liberté guidant le Peuple, E.Delacroix
10. #DevoxxFR @erichoresnyi Mission Network performance throughput, small overhead, bandwidth User-perceived performance latency Network-efficiency avoid using the streets. Napoleon III and Haussmann, 1853
11. #DevoxxFR @erichoresnyi #DevoxxFR @erichoresnyi Inherited features Paris est résilient @StreamdataIO
12. #DevoxxFR @erichoresnyi Inherited Properties @StreamdataIO
13. #DevoxxFR @erichoresnyi DNS .gov, .com and .fr follow same scheme Seine is .root Streets start there Right/even Left/Uneven Paris street numbering, 1805
14. #DevoxxFR @erichoresnyi Famous heritage @StreamdataIO Napoleon, France 1804 Tim Berners-Lee, CERN 1990 Comment: // limited to ability to establish basic rules. I do not admire Napoleon for anything else.
15. #DevoxxFR @erichoresnyi Separation of concerns Client Server
16. #DevoxxFR @erichoresnyi Stateless #DevoxxFR @erichoresnyi
17. #DevoxxFR @erichoresnyi SELECTION OF PROPERTIES FIELDING // HAUSSMANN REST // PARIS Paris est résilient @StreamdataIO
18. #DevoxxFR @erichoresnyi P1: Low-Entry Barrier
19. #DevoxxFR @erichoresnyi P2: Extensibility @StreamdataIO Streaming = Paris Metro/Subway, 1900 Paris subway
20. #DevoxxFR @erichoresnyi P3: Distributed Hypermedia #DevoxxFR @erichoresnyi
21. #DevoxxFR @erichoresnyi P4: Anarchic Scalability Paris Metropole today, 10m+ people #DevoxxFR @erichoresnyi
22. #DevoxxFR @erichoresnyi P6: Independant Deployment @StreamdataIO Ile de La Cité, embedding legacy/sacred Notre Dame #softshake #DevoxxFR @erichoresnyi
23. #DevoxxFR @erichoresnyi WHY HAUSSMANN DECIDED TO MAKE PARIS RESTFUL Paris est résilient @StreamdataIO
24. #DevoxxFR @erichoresnyi REST=LCODC$SS&UI @StreamdataIO CSS=Client-Server-Stateless
25. #DevoxxFR @erichoresnyi Layer 1: sewage & gas #DevoxxFR @erichoresnyi
26. #DevoxxFR @erichoresnyi Layer 2: streets #DevoxxFR @erichoresnyi
27. #DevoxxFR @erichoresnyi Layer 3: roofs #DevoxxFR @erichoresnyi
28. #DevoxxFR @erichoresnyi Layered Networks #softshake #DevoxxFR @erichoresnyi
29. #DevoxxFR @erichoresnyi Cache Ste Geneviève Library, 1850 700 concurrent clients – 80k records in cache - 2m records in stock
30. #DevoxxFR @erichoresnyi Programmable #DevoxxFR @erichoresnyi
31. #DevoxxFR @erichoresnyi Uniform Interface = Genious Codified UI, by floor (header), with token/key, proxy, cache
32. #DevoxxFR @erichoresnyi Pattern #DevoxxFR @erichoresnyi
33. #DevoxxFR @erichoresnyi HAUSSMANN URBANIST // FOWLER CONTINUOUS DELIVERY & MICROSERVICES Paris est résilient @StreamdataIO
34. #DevoxxFR @erichoresnyi Continuous Delivery @StreamdataIO Resilient Water Induction, requiring aqueducts and reservoirs
35. #DevoxxFR @erichoresnyi Continuous Delivery @StreamdataIO Aqueduct, Arcueil Reservoir, Arcueil
36. #DevoxxFR @erichoresnyi Microservices @StreamdataIO #DevoxxFR @erichoresnyi
37. #DevoxxFR @erichoresnyi Zoning #DevoxxFR @erichoresnyi
38. #DevoxxFR @erichoresnyi Lead by example Opera, an Hypermedia API Great UX Traction for API owners
39. #DevoxxFR @erichoresnyi Cut Corners @StreamdataIO And exemplar: conduct the most difficult transformations
40. #DevoxxFR @erichoresnyi SUSTAINABLE SYSTEMS? PARIS 160 YEARS LATER HTTP REST 16 YEARS LATER Paris est résilient @StreamdataIO
41. #DevoxxFR @erichoresnyi UX performance: City of Lights 20m unique visitors a year #DevoxxFR @erichoresnyi
42. #DevoxxFR @erichoresnyi Reproductible Chicago after the Burnham Plan, designed in 1909 #DevoxxFR @erichoresnyi
43. #DevoxxFR @erichoresnyi Reproductible @StreamdataIO Goto Shinpei’s plan for the reconstruction of Tokyo, 1923 #DevoxxFR @erichoresnyi
44. #DevoxxFR @erichoresnyi Durable Courneuve, 1986, 20y lifespan Monolith
45. #DevoxxFR @erichoresnyi Evolvable #DevoxxFR @erichoresnyi
46. #DevoxxFR @erichoresnyi RECENT EVOLUTIONS IN CITIZEN UX Paris est résilient @StreamdataIO
47. #DevoxxFR @erichoresnyi Boulevards=HTTP/2 by @gcouprie Boulevards=protocol to manage streams Very slow (walk), Slow (horses), and Fast lanes Citizen UX improved with latency @StreamdataIO
48. #DevoxxFR @erichoresnyi Map of Paris metro @StreamdataIO github.com/vbarbaresi/MetroGit.git
49. #DevoxxFR @erichoresnyi Error Handling in your code Gare Montparnasse, 1895 HTTP or REST does not prevent from good error handling, contrib @rit #DevoxxFR @erichoresnyi
50. #DevoxxFR @erichoresnyi Incomplete Protocol: Velib Leverage reusable assets Share same layer as existing traffic But incomplete protocol: collisions, cars-only RFCs @StreamdataIO By @erichoresnyi, after an accident crossing Champs Elysées
51. #DevoxxFR @erichoresnyi Vendredi après-midi Société Programmable Développeur Citoyen ∨
52. #DevoxxFR @erichoresnyi HTTP//PARIS DICTIONARY MAPS & RESSOURCES Paris est résilient @StreamdataIO
53. #DevoxxFR @erichoresnyi 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
54. #DevoxxFR @erichoresnyi Lost in Translation Code Civil HTTP Paris Web Boulevards Internet Backbone Streets Access Lines Street Numbers URI Light in the streets Authentication Concierge Proxy Cellar Cache Carriage Request/Response Subway/Metro Streaming Homeworking Differential update over JSON Patch Pierre de Carrière JSON Compagnon du Devoir API Developer Haussmann Architect Beaux Arts Apple, Android and JS Developers Façade API Haussmann Façade RESTful API Utilities (gas, water) 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 MOOCs Left bank spirit Android Right bank spirit Apple iPhone @StreamdataIO #UX #API
55. #DevoxxFR @erichoresnyi To dig further 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