Agile-ish life at GitHub

A presentation to Turku Agile Day students on the Agile culture, flow and nature of work at GitHub, even if it doesn't wear that official label at the company.

Transcript

1. Agile-ish life at GitHub
   matthewmccull
   matthewmccullough
   at Turku Agile Day
   

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2. training@github.com
   training.github.com
   @matthewmccull
   matthewmccullough
   

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3. View Slide

4. Matthew McCullough
   @matthewmccull
   

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5. View Slide

6. agile
   what?
   

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7. agile
   organizations
   

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8. agile
   teams
   

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9. agile
   development
   

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10. agile
    features?
    

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11. waterfall…
    

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12. !
    !
    ‣ Plan
    ‣ Design
    ‣ Develop
    ‣ Deploy
    

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14. is software ever
    done?
    

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15. is software ever
    perfect?
    

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16. is code ever
    perfect?
    

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17. is code ever
    bug free?
    

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18. four years of changes
    

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19. 32 colleagues
    2 teams
    

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20. 50 colleagues
    2 teams
    

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21. 75 colleagues
    3 teams
    

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22. 110 colleagues
    4 teams
    

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23. 150 colleagues
    5 teams
    

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24. 200 colleagues
    10 teams
    

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25. 220 colleagues
    12 teams
    

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26. 240 colleagues
    15 teams
    

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27. 13 leaders
    

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28. 13 managers?
    

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29. deploy all the time
    

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30. values
    creativity
    

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31. – Arthur C. Clarke
    The difference between machines and
    human beings is that human beings can
    be reproduced by unskilled labor.
    

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32. View Slide

33. Coordinate
    

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34. !
    !
    chaos? / agile
    

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35. !
    !
    flexibility / agile
    

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36. !
    !
    iterations / agile
    

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37. !
    !
    ‣ Sketch
    ‣ Prototype
    ‣ Review
    ‣ Refine
    

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38. !
    !
    README driven development
    

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39. !
    !
    Sketch…
    

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40. View Slide

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42. !
    !
    Prototype…
    

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43. View Slide

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47. !
    !
    HTML prototypes even for
    native apps
    

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48. View Slide

49. View Slide

50. !
    !
    Review…
    

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51. View Slide

52. View Slide

53. !
    !
    Refine…
    

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57. !
    !
    130 commits
    

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58. !
    !
    91 comments
    

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59. !
    !
    45 deployments
    

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60. !
    !
    10 contributors
    

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61. !
    !
    8 weeks
    

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62. ”Probably

    the most important
    technical book

    of 2010”
    -Martin Fowler, ThoughtWorks
    

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63. DVCS
    

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64. Distributed VCS
    

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65. GITHUB
    COMMUNITIES
    2770 Most Followed Users - JANUARY 2010 Nodes size :
    Edges weight :
    Number of followers
    Number of forked projects
    lifo
    madrobby
    mislav
    simonw
    akitaonrails
    cv
    sinatra
    defunkt
    rails
    thoughtbot
    37signals
    drnic
    ryanb
    leah
    wycats
    mojombo
    topfunky
    jnunemaker technoweenie
    ezmobius
    aslakhellesoy
    richhickey
    rtomayko
    textmate
    ericflo
    binarylogic
    schacon
    dhh
    jamis
    L l15n l4rk labria lachie lachlanhardy laguiar lak lancecarlson langalex lapis25 laribee larrytheliquid laruby lawrencec lazyatom ldandersen leah leandrosila leedo leehambley leeky leemhenson leeigraham lejoe lenalena
    lenn0x Leont leshill lestrrat lethain leto leent lfittl lg lhl lholden lian libin lifechurch lifo lincolnloop lindsayeans linkingpaths littleidea liedoor liyanage liz llimllib lllnorikolll lloyd lmorchard localhost lodewijk loe
    loiane look lopnor lorn loudej lozzd lrug lrz lsdr lsegal lshepard lsmith lucasdecastro lucashungaro luckiestmonkey luddep luigi luislaena luke0x lukebayes lukec lukego lukeman lukemelia lukeredpath
    lukesh lukhnos luqui lussumo lxbarth lyokato
    M m0rk m3nt0r m5h maca maccman machine machu Machx macournoyer macsphere maddingue maddox madpilot MadRabbit madridonrails madrobby madx maedana maggit
    magicalhat MagLe magnolia maiha makenosound makies makoto makotoworld mala malcolmt malkomalko mallipeddi malsup mame mamuso Manfred manuelpichler maneru
    maoe Marak marcandre marcel marcelinollano marcoow marcpalmer marcusramberg marianoguerra marinho mariusaeriksen markbates markmansour markng markpasc
    marksands markstory markstos marshall martinbtt martincik martinjandrews martinstannard marucc maryrosecook masaedw masak masaki MASA-P masartz
    mash masterkain masuidrie mataki mathie matschaffer matsufuji matsuu mattallen mattb mattball mattbauer mattetti mattgallagher matthew matthewford
    matthewmccullough matthewpennell matthewrudy matthooks mattknox mattly mattman mattmatt mattn mattpolito mattt mattwynne mattyoho matz
    mauricio maxim maxime maxlapshin maxy mayuki mbailey mbbx6spp mbleigh mblsha mbrubeck mcantelon mchung mcommons mcornick mcroydon
    mcurry mdesign mdg mdirolf mdk Me1000 melo memcached memo memowe mental merb merbjedi mergulhao meritt merlinmann metade metajack
    metaskills methodmissing mexpolk mferrier mfp mhinze miamiphp michael michaeld michaelklishin mickey24 microformats mig migueldeicaza
    migurski mihasya mikeal mikechambers mikehale mikejs mikesten miketracy mikewest miki mikl Miksago milesj mileszs millenomi miloops
    mintchaos miraglia mischa misla mitchellh mitsuhiko miura1729 miyagawa mizzy mjankowski mjfreshyfresh mjgiarlo mkhl mkoukoullis
    mkrisher mlaaker mlandauer mlemos mletterle mloughran mmalone mmangino mmcgrana mmower mnaberez mndoci mnot mnutt
    mocra mojodna mojombo mokehehe mokele mokolabs molpe monadic monde mongodb monjudoh monken monkrb monstersofruby
    Montoya montylounge moomerman mootoh mootools moritz moriyoshi moro mort motemen mperham mpeters mptre mrdon
    mreid mrflip mrkn mroth msanders mschilli mschrag mst msweeney m-takagi mtodd muness mutoh m midaurre mxcl
    myabc myelin myfinder myles mynyml mysociety mza mzarra mzp
    N n0ts n1k0 N3uro5i5 n8han NachoMan Nafai77 nagayama naha nakajima namelessjon nando nanki nanto naoya
    naoyat napcs Narnach nataliepo natbat nate nateabele natekoechley natfriedman nathanborror nathanpitman
    nathansmith nathansobo naeen nawoto nay nayutaya nbio nciagra ncr nddrylliog nealford neerajdotname
    nefarioustim negipo neilcrookes NeilCrosby neilk nekokak nekoya nelstrom neror nesquena netshade
    nette neyn newbamboo newism newrelic newtonapple nex3 nfjinjing ngenworks ngerakines nickdunn
    nickel nickoneill nicksieger nigelr nihen nikodemus nilshoerrmann ninajansen ninjudd nipotan nitobi
    nitoyon niw nkallen nkohari nkpart nmerouze noblejasper nofxx nogeek nono noplans norbert norio
    norio-nomura norm norman northern-bites nosmo noss notahat notbenh notch8 nothingmuch
    no noas0x2a nowells nperez nrk nshah ntalbott ntoll nuance nullobject nullstyle nyarla nyaxt
    nysenatecio nzakas NZKoz
    O obie objo obra oc ofZach ogijun okkez olabini oldmoe oleganza olg olleolleolle ollym omega
    omnigroup omo omz ondrejmirtes onecrayon oneup ook openframeworks openid openjsan
    openmelody openpne openskip openzoom opscode oquno orderedlist orionz orlando os0x
    osamu2001 osfameron Oshuma oskarkrawczyk osteele otsune outoftime Oid oz ozeias
    P pablete packagethief pacoguzman padraic pahagon palewire palm paltman
    pantulis Paperision3D parolkar particle patmaddox patrickt paukul paulbuchheit
    paulca pauldix pauldowman paulelliott paulhammond paulirish paulmars paulp
    paulsmith pc pcalcado pdcawley peas pedro pedromg pelargir peleteiro pelle
    pellegrino penberg penguincoder pengwynn penso perigrin peritus perl6
    petdance pete peterc peterlih peterpunk pfenwick pfig pgr0ss ph7 phae
    phatduckk phaylon phiggins42 philhawksworth phillipadsmith philnash
    philogb philoye philsturgeon phishy phonegap phorsfall php phpnut
    phuang piece pieter pilu pinax piranha Pistos pius piotal pjb3 pjbarry
    pjhyett pk pkrumins pkwde planetargon planetbeing plataformatec
    plathrop playpauseandstop pledbrook plentz plu pluginaweek
    pmichaud pnasrat pneff pobox pointlessjon pointybeard pokeb
    pope poppen porras postmodern PotHix potionfactory ppeszko
    practicalarduino pragdae pragmaticbadger predominant presently
    preston probablycorey processone progit progprog progrium
    projectblacklight protocool psd psychs ptarjan puls pumpkin
    puppet-modules pure purzelrakete pydanny
    Q qhoxie qoobaa qrush quackingduck quag quamen quek
    queso quirkey
    R r38y rabbitmq rabble rack rackspace radar radiant
    raelity rafaelbandeira3 rafaelp rafaelrosafu rafaelss
    rafaelsteil rafl raganwald raggi rails railsbridge railsdog
    railsloe railsmachine railsmaniac railsrumble rakudo
    ralph ramalho Ramarren ramon ramsey RandalSchwartz
    RandomEtc rapidsms rapodaca rares raul rayners rayinly
    rbarazi rblackwe rbuels rbxbx rcaputo rcarneiro rcrowley
    rcunning rdp reagent recess reddais redinger redsquirrel
    reductielabs reid reidab reidmix reinh releance remi remko
    A a2chub aalmiray aanand aarongustafson aaronjensen aaronsw abcde abedra aberant abh abi Abigail abock abraham abw acastro acdha acf acme aconbere acotie actionrails Actionscript3Commons actiefx actiescaffold
    actsasflinn AD7six adambair adamcooke adamhjk adamkennedy adamlogic adammaddox adammck adamstac adam adamwiggins adelcambre adinardi adrianh adzap aeden aemkei AF83 agencyrainford agentzh
    agile ahoward ahwayakchih ai aitor aiwilliams ajturner akio0911 akisute akitaonrails akiyan akosma akr4 akrito al3x alandipert AlanQuatermain alcides alecmce alex alexbain alexcharlie alexm alexott
    alexollmer alexyoung alfredwestereld alkemist allen alloy alowe alpinegizmo alto alarobp amachang amaia amartinsn amatsuda amazingsyco ambethia amiel amiri amitrathore amnesiac amyhoy
    anandkunal anandology anarchiist anatoo andk andre andreisau andreiz andrew andrewgodwin andrewmaier andrewsmedina android AndyA andyferra andyhd andykent andymatuschak
    anildash anotherjesse anselm anselmoales anteaya anthonyshort antirez antoniogarrote antono anutron ap apache apeiron apeiros apenwarr APE-Project apgwoz apinstein apm apocalypse
    apotonick apparentlymart appcelerator appden applicake aptana aq1018 aql Arachnid aral arcanez archaelus archfear arfon armmer arnaudsj arneb ars arsenio arthurgeek arthurk
    arunthampi arind arya asenchi ashb ashbb ashchan ashchristopher ashizawa ashleymoran ashrewdmint ask aslakhellesoy assaf astro atduskgreg atebits atinypixel atl atmos
    atnan audreyt augustl aurelian auser aussiegeek austinonrails autarch authorNari automatthew auxesis aar adi asm ayende ayn azambuja
    B bacek backtik baldwindaid balibali balinterdi ballantyne bangpound banister bantic baobab barbie bard bardusco bartman bartTC barttenbrinke bastih
    bastos batiste bauhouse baardage bayashi bborn bcardarella bclinkinbeard be9 BeamerCola bear beausmith beberlei beebe4 bekkopen benadida benaskins
    benatkin benburkert bendiken BenHall benhoskings benjaminhawkeslewis benoitc benschwarz benspaulding benstucki BenWard beppu besquared bess
    bestpractical bfirsh bgolub bguthrie bhorst bickfordb bigfleet bigtiger billy3321 binary42 binarydud binarylogic bingos bitbckt bitprophet bi bjartek
    bjeanes bjhess bkerley blackwinter blaine bleargh45 blech bleything blowmage blturner Bluebie bluesmoon BlueT BM5k bmabey bmentges
    bmizerany bobmcwhirter bob-p bobtfish bobuk bomberstudios bonar bonnu book boosty bos botanicus boucher bowserj bradchoate bradfitz
    bradford bradleywright brainopia braintree brandon brandonaaron brandonkelly breakpointer brendanlim brendano brentsnook bret
    briandfoy brianjlandau brianleroux brianmario BrianTheCoder bricas bricooke brightbox britg brixen brl BRMatt brosner browsermedia
    browserplus bru bruce bruno brunofms bruno brupm bry4n bryanl bryansray brycethornton brynary brysonian bs bsag bschmalhofer
    bscofield bslatkin btakita btrott bumi bwhitman byrnereese
    C c7 c99koder c9s cadorn caelum caffo Caged caike cainley caironoleto caius cakebaker cakephp cakephp-plugin-proider
    calagator calaera calendaraboutnothing camflan camptocamp capistrano capndesign capotej capttaco cardmagic
    careo caridy carlhuda carljm carllerche carlo carlosantoniodasila carlosbrando carmelyne carpeaqua cassiomarques
    castleproject casualjim caueguerra cauld caalle cayblood cbilson ccgus cchandler cdent cee-dub ceeram
    cellfusion centro cerego ceritium cesare cgrand cgriego cgrusden chad chadcrowell chadmyers chaoslawful
    charley charsbar cheeaun chendo chergert chillicoder chipdude chirags chl chneukirchen cho45 choan
    choonkeat chorny Chouser chregu chris-d-adams chrisdolan chrisdrackett chriseidhof chriseppstein
    chrisk chrislloyd chrislo chrismear chrismessina ChrisMissal chrispatterson christos chromakode
    chromatic chromium chubas chunzi chuyeow ciaran ciaranm cicloid citrusbyte cjheath cjmartin
    cjohansen ckelly claco claesjac clarkware claus clayton cldwalker cleitonfco clemens cliffmoon
    clintecker clkao clockfort clofresh cloudera cloudhead cloudkick clouserw cmer cmilfont coatl
    CobyR cocoiti codahale codebutler CodeOfficer codepo8 coderrr codeslinger codyfauser
    codysoyland cog coji coleifer colin collectieidea collin commanderklaus commondream
    commonsguy Constellation cooldaemon copiousfreetime corey coreyhaines coreyti cortesi
    cosimo couchio couchrest courtenay cout cowboy cowens cpennington cpojer cpytel
    cqa02303 crafterm Craftworks craigw creationix crnixon crossblaim cschneid cstar ct
    ctb curtis cv cvf cwensel cwninja cwsaylor cyanogen cypher cyrildoussin cyx czheng
    D da3mon dacort daeken Daenyth dag dagolden daijiro daiki41ti dajobe
    dakrone dalmaer dambalah damog damon dan DanaDanger dancroak dand
    danhodos danielharan danielmorrison danielpunkass danielqo danielsdeleo
    daniellopes danielwanja dankogai danlarkin danlucraft dan-manges dann
    dannyamey danrubin danski danw danwrong darashi darius DarkAngelBGE
    darkwing darrenf darronschall darscan darwin datamapper datawrangling
    daebryson daejohnson daeman692 daemerwin daeott daetroy daglass
    daidbgk daidjrice daidpersson daidrichards daidsmalley daiscabral
    daisp daorg dbalatero dbloete dbr dbrady dbussink dcbriccetti dce
    dcgrigsby dchelimsky dcparker dcramer dcrec1 dcrosta dctanner
    ddemaree ddfreyne ddollar deadprogrammer dealforest deanwilson
    debasishg deepak deepthawtz defunkt Def dekart delano delynn
    denderello derailed derencius derickbailey desi destroytoday
    deelop deelopmentseed deelopwithpassion dfischer dgiunta
    dha dhellmann dhh dhoss diegok dies-el Dieterbe digdog digg
    digi604 digitarald dima dira directeur dioxx dj2 djacobs django
    django-extensions djangrrl djanowski djchall djspiewak djsun
    dkubb dmathieu dmitriid dmitryame DmitryBaranoskiy dneg
    dneighbors DocSaage documentcloud dogmatic dojo dojosp
    dominiek domix domm donpdonp dorward dot dottedmag
    dougal dougma doy dpickett dpp draegtun dragon3
    drbrain drd drewolson drforr drikin DRMacIer drnic drudge
    dsboulder dsingleton dstrelau dto dtsato duairc dudemeister
    duelinmarkers dukedae duncanbeeers durran dustin
    duwanis ddplm dydra dwhittle dwillis DylanFM dyoder
    dysinger dziegler earl eastmedia
    E easy-designs ebi ebihara edas edais10 eddanger
    U.S. Users
    Japaneses Users
    U.K. Users
    German Users
    Other Users
    

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66. !
    !
    many clones
    

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67. !
    !
    many repos
    

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68. !
    !
    many contributors
    

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69. Alice Bob
    Cory Dana
    Central
    Repo
    

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70. Alice Bob
    Cory Dana
    Local
    Repo
    Local
    Repo
    Central
    Repo
    

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71. !
    !
    many forks
    

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73. !
    !
    many branches
    

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74. topic branches
    master branch
    

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75. !
    !
    many merges
    

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79. !
    !
    hubot
    

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80. View Slide

81. git-flow
    

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86. !
    !
    simplest thing that works
    

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87. !
    !
    simplest thing that works
    

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88. !
    !
    a long-lived release needs stability
    

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89. !
    !
    embedded code needs stability
    

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90. !
    !
    customized apps needs stability
    

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91. !
    !
    simplest thing that works
    

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92. GitHub flow
    

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98. pull request
    

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100. !
     !
     branch with identity
     

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101. !
     !
     branch with conversation
     

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102. !
     !
     branch with state
     

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103. rebasing flow
     

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106. testing demands
     

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107. !
     !
     quick builds
     

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108. !
     !
     quick tests
     

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109. !
     !
     quick deployments
     

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110. feature flag
     

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113. embrace smaller iterations
     

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114. !
     !
     focused ideas
     

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115. !
     !
     focused changes
     

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116. !
     !
     focused sketches
     

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117. !
     !
     focused prototypes
     

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118. !
     !
     focused deploys
     

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119. – Donella H. Meadows, Thinking in Systems: A Primer
     “Remember, always, that everything you
     know, and everything everyone knows, is only
     a model. Get your model out there where it
     can be viewed. Invite others to challenge
     your assumptions and add their own.”
     

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120. Agile-ish life at GitHub
     matthewmccull
     matthewmccullough
     

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