Continuous #Agile2012, 15 August Thursday, August 16, 12

Transcription

1 Continuous #Agile2012, 15 August

2 agile 101 "Agile" team Analysis + Design Development Centralized QA Integration + QA IT Operations Release and operation Customer Testing + Showcase Iteration The "last mile"

3 web 2.0 disrupting traditional businesses

4 releasing frequently build the right thing Customer developent Agile product development Eric Ries, The Lean Startup

5 innovate You can't just ask customers what they want and then try to give that to them. By the time you get it built, they'll want something new. Steve Jobs

6 scientific method Ideas create hypothesis Learn Build deliver minimum viable product Data Code get feedback Measure (repeat) Eric Ries, The Lean Startup

7 ask this question How long would it take your organization to deploy a change that involved just one single line of code? Do you do this on a repeatable, reliable basis? Mary and Tom Poppendieck, Implementing Lean Software Development, p59.

8 releasing frequently build the right thing reduce risk of release John Allspaw: Ops Metametrics

9 optimize for mtrs

10 optimize for mtrs MTBF MTRS

11 releasing frequently build the right thing reduce risk of release real project progress

12 agile manifesto Our highest priority is to satisfy the customer through early and continuous delivery of valuable software

13 production-ready software Fast, automated feedback on the production readiness of your applications every time there is a change - to code, infrastructure, or configuration

14 continuous delivery Software always production ready Releases tied to business needs, not operational constraints

15 continuous delivery automation patterns and practices collaboration

16 ingredients configuration management continuous integration automated testing

17 Develop Local Workstation Mainline Server Build pull Build push Build Done!

18 Develop Local Workstation Everyone Commits Mainline Server Build To the Mainline pull Build Every Day push Build Done!

19 build quality in Cease dependence on mass inspection to achieve quality. Improve the process and build quality into the product in the first place W. Edwards Deming

20 different kinds of testing AUTOMATED Business facing MANUAL Support programming Functional acceptance tests Unit tests Integration tests System tests Showcases Usability testing Exploratory testing Non-functional acceptance tests (performance, scaling,...) Critique project AUTOMATED Technology facing MANUAL / AUTOMATED Diagram invented by Brian Marick

21 deployment pipeline an automated implementation of your system s build, deploy, test, release process visibility feedback control

22 deployment pipeline Delivery team Version control Build & unit tests Automated acceptance tests User acceptance tests Release Check in Trigger Feedback Check in Trigger Feedback Trigger Feedback Check in Trigger Feedback Trigger Feedback Feedback Approval Approval

23 deployment pipeline

24 deployment pipeline

25 reducing release risk automate provisioning and deployment ensure devs, testers and ops collaborate throughout

26 reducing release risk devops incrementalism decoupling deployment and release

27 devops culture automation measurement sharing

28 feature toggles blue-green deployments canary releases low risk releases are incremental dark launching production immune system

29 DEPENDENT SERVICE Database Abstraction layer Abstraction layer STATIC CONTENT /static/1.1 APPLICATION /static/1.0 Router / Load balancer Interwebs

30 blue-green deployments

31 router web server app server DB server

32 v1.1 v1.1 v1.1 router web server app server DB server

33 v1.1 v1.1 v1.1 router v1.2 v1.2 v1.2 web server app server DB server

34 v1.1 v1.1 v1.1 router v1.2 v1.2 v1.2 web server app server DB server

35 Canary Releasing

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38 canary releasing Reduce risk of release Multi-variant testing Performance testing

39 immune system what if someone replaced your buy button with spacer.gif? T cells

40 release!= deployment

41 feature toggles Config File [featuretoggles] wobblyfoobars: true flightyforkhandles: false some.php <?if ($wobblyfoobars) {?>... various UI elements <?}?> other.php $fork_handle = ($featureconfig->ison( flightlyforkhandles))? new flightyforkhander(acandle) : new forkhandler(acandle); Stolen from Martin Fowler

42 Dark Launching

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45 enterprise governance risk management SOX, ITIL, COBIT segregation of duties change management auditing and compliance

46 people are the key Get everyone together at the beginning Keep meeting Make it easy for everyone to see what s happening Continuous improvement (kaizen)

47 questions #continuousdelivery 2011 ThoughtWorks, Inc.