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Building Microservices in the cloud at AutoScout24

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Fed up with stop and go in your data center? Why not shift into overdrive and pull into the fast lane? Learn how AutoScout24 are building their Autobahn in the cloud to become the market leader in Europe's vehicle classified business. Reinventing themselves by making a radical transition from monoliths to microservices, from .NET on Windows to Scala on Linux, from data center to AWS and from built by devs and run by ops to a devops mindset. While the current stack keeps running, ever more microservices will go live as you listen to stories from the trenches.

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Building Microservices in the cloud at AutoScout24

  1. 1. Highway to heaven Building microservices in the cloud Continuous Lifecycle 2015
  2. 2. Agenda Meet AutoScout24 Shifting gears How we build our services How we organize ourselves @cdeger & @wolfwolf
  3. 3. AutoScout24 - 30.000ft CC
  4. 4. Baseline AutoScout24 IT Highly optimized, but of last decade IT platform supported growth for >6 years Microsoft oriented stack Enterprise IT setup - MTBF over MTTR Proven agile and lean principles C
  5. 5. New CEO CC
  6. 6. Do you attract talent? CC
  7. 7. CC
  8. 8. Project Tatsu WW
  9. 9. Monolith to Microservices Data center to AWS .NET / Windows to JVM / Linux Devs + Ops to DevOps culture Involve product people Five challenges WW
  10. 10. Technical transformation WW
  11. 11. Change the wheels while driving WW
  12. 12. Strategic Goals Goals of the business side Architectural Principles High-Level Principles Design and Delivery Principles Tactical measures Reduce Time to Market Speed, Fast Feedback Cost Transparency Collect metrics to allow decisions cost vs. value. Support Data-Driven Decisions Listen to users and validate hypothesis. Provide as many relevant metrics & data as possible. You build it, you run it Responsibility to run and maintain a product stays with the building team. Fast feedback from live and customers helps us to continuously improve. Organized around Business Capabilities Build teams around products not projects. Follow the domain and respect bounded contexts. Inverse Conway Maneuver Shared Nothing Avoid shared infrastructure and tight coupling as much as possible. Don’t create the next monolith. Macro and Micro Architecture Clear separation. Autonomous micro services within the rules and constraints of the macro architecture. AWS First Favor AWS service over managed service, over self-hosted OSS, over self-rolled solutions. Data-Driven/ Metric-Driven Collect metrics from processes and applications. Analyze, alert and act on them. Eliminate Accidental Complexity Strive to keep it simple. Focus on essential complexity. No silver bullet. Event Sourcing and Publishing Keep history of state changes and publish application events. Autonomous Teams Make fast local decisions. Be responsible. Know your boundaries. Share findings. Continuous Delivery Deliver changes reliable, often and fast. Infrastructure As Code Automate everything: Reproducible, traceable and tested. Immutable servers over snowflake servers. DevOps Culture Developers and Ops work together in collaborative teams as engineers. No silos. Be Bold Go into production early. Value monitoring over tests. Recover and learn. Optimize for MTTR not MTBF. Security & Data Privacy Security must be first class citizen and everybody’s concern. Keep data-privacy in mind. CC Another goal Work in progress...
  13. 13. Principles Organized around business capabilities You build it, you run it Be bold Macro and micro architecture Shared nothing CWCW
  14. 14. Shared infrastructure Shared nothing Availability over shared nothing Convenience offerings No side effects Fast local decisions over committee Respect family ties WW
  15. 15. How (not) to share Use over re-use Re-use only after hardening Copy n’paste, OSS, library Pull instead of push WW
  16. 16. How many environments? Which versions on staging? Prod differs anyway: Load, data, patterns V2V3 V6 V5 V4 V7 V5 V8 Engineer CI Dev Staging V1 V4 Prod CC
  17. 17. Dev and prod is enough Consumer driven contracts Shadow traffic Semantic monitoring Smoke tests or canary releases V2V3 V6 V5 V4 V7 V5 V8 Engineer CI Dev Prod CC
  18. 18. Event Sourcing and data pumps One way data highway Event Sourcing - store history of all changes WW
  19. 19. SQS + S3 Kinesis + S3 Kinesis + DynamoDB SQS + DynamoDB Proxy + DynamoDB DynamoDB Evolution WW
  20. 20. Frontend integration Shared nothing Autonomous teams One domain High optimisation CC
  21. 21. Frontend integration CC
  22. 22. PageSpeed Module css (page+fragment) js (page+fragment) ngx_pagespeed css (page) js (page) css (fragment) js (fragment) CC
  23. 23. How to build autonomous teams Do not fall back into old behaviours Beware of Mandelbrot teams Pager duty so that you run it Fix broken windows Part-time ops not working Not all T-shapes are the same Wolf WW
  24. 24. Infrastructure guild Agree on things to do Share learnings Delegate implementation to teams Empty backlog should be normal Infrastructure product teams needed? CC
  25. 25. Two stacks Cash stack meets shiny new stack One company Lights on in cash stack Feature freeze Where to build new features? Ease of integration helps business people WW
  26. 26. cdeger@autoscout24.com @cdeger wschlegel@thoughtworks.com @wolfwolf
  27. 27. Attributions Blue sky, white-gray clouds by nature protector Natubico, www.vivism.info [CC BY-SA 3.0] http://commons.wikimedia.org/wiki/File%3ABlue_sky%2C_white-gray_clouds.JPG A Danish Perspective by NASA [Public domain] http://commons.wikimedia.org/wiki/File%3AA_Danish_Perspective.jpg http://commons.wikimedia.org/wiki/File%3ANASAComputerRoom7090.NARA.jpg GREG EINRAD Amazon16 by Neil Palmer/CIAT [CC BY-SA 2.0] https://www.flickr.com/photos/ciat/5641594952 BERGSTEIGER Barber in Cameroon by James Emery from Douglasville, United States (Daddy Joe_1355) [CC BY 2.0] http://commons.wikimedia.org/wiki/File%3ABarber_in_Cameroon.jpg Wide objectives by Kivela (Own work) [Public domain] href="http://commons.wikimedia.org/wiki/File%3AWide_objectives.jpg Transformer Fire Barrier by GerryS1 (Own work) [CC BY-SA 3.0 or GFDL] http://commons.wikimedia.org/wiki/File%3ATransformer_Fire_Barrier.jpg
  28. 28. Attributions (cont) Alonso Renault Pitstop Chinese GP 2008 by Bert van Dijk (Pitstop F1 ING Renault) [CC BY-SA 2.0] http://commons.wikimedia.org/wiki/File%3AAlonso_Renault_Pitstop_Chinese_GP_2008.jpg Principle of Panchasheel by Prakash Adhikary (Own work) [CC BY 3.0] http://commons.wikimedia.org/wiki/File%3APrinciple_of_Panchasheel.JPG Traffic Jam by Doo Ho Kim [CC BY-SA 2.0] https://www.flickr.com/photos/titicat/3049591547 Pellets by The original uploader was Richard Mayer at German Wikipedia [GFDL or CC-BY-SA-3.0] http://commons.wikimedia.org/wiki/File%3APellets.jpg Pipes and Valves by Uwe Hermann [CC BY-SA 2.0] https://www.flickr.com/photos/73628542@N00/6272975359 Size variation in Coccinella undecimpunctata (2127991716) by Gilles San Martin from Namur, Belgium [CC BY-SA 2.0] http://commons.wikimedia.org/wiki/File%3ASize_variation_in_Coccinella_undecimpunctata_(2127991716).jpg Mille crêpe by Laitr Keiows (Own work) [CC BY-SA 3.0 or GFDL] http://commons.wikimedia.org/wiki/File%3AMille_cr%C3%AApe.jpg Country Energy power line replacement 01 by Bidgee (Own work) [CC BY-SA 3.0] http://commons.wikimedia.org/wiki/File%3ACountry_Energy_power_line_replacement_01.jpg Puzzling by Bernd Gessler (Own work) [CC BY-SA 3.0] https://commons.wikimedia.org/wiki/File%3APuzzling.JPG
  29. 29. Attributions (cont) Sharing Sucks (4536747557) by eyeliam from Portland, United States [CC BY 2.0] http://commons.wikimedia.org/wiki/File%3ASharing_Sucks_(4536747557).jpg 7Line 9184 (8263568241) by Metropolitan Transportation Authority of the State of New York (7Line_9184 Uploaded by tm) [CC BY 2.0] http://commons.wikimedia.org/wiki/File%3A7Line_9184_(8263568241).jpg England rugby team 1905 by Russell & Sons (The Graphic) [Public domain or Public domain] http://commons.wikimedia.org/wiki/File%3AEngland_rugby_team_1905.jpg Wandergeselle by Sigismund von Dobschütz [CC BY-SA 3.0] http://commons.wikimedia.org/wiki/File%3AWandergeselle_02.JPG Faber-Rechenschieber 5304 by User:Karl Gruber (Own work) [CC BY-SA 4.0] http://commons.wikimedia.org/wiki/File%3AFaber-Rechenschieber_5304.JPG Wheel clamps Texas by Richard Anderson from Denton, United States (Boots.) [CC BY-SA 2.0] http://commons.wikimedia.org/wiki/File%3AWheel_clamps_Texas.jpg GuadalupeNOLA15Oct07Thanks by Infrogmation of New Orleans (Photo by Infrogmation) [GFDL or CC BY-SA 3.0] http://commons.wikimedia.org/wiki/File%3AGuadalupeNOLA15Oct07Thanks.jpg AtariBasic by Calin99 (Own work) [GPL] http://commons.wikimedia.org/wiki/File%3AAtariBasic.png Spare wheel by Brian Snelson [CC BY 2.0] https://commons.wikimedia.org/wiki/File:Spare_wheel_-_Flickr_-_exfordy.jpg