IT S ALL ABOUT THE DOMAIN, HONEY!

Transkript

1 IT S ALL ABOUT THE DOMAIN, HONEY! Fachliche Architektur In hoher Qualitaet durch Domain-Driven

2 Was ist das für 1

3 Vong Domain

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7 HENNING

8 SCHWENTNER

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10 @hschwentner

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16 Quelle:

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18 Foto: Henning Schwentner

19 Fritz& Franz& Lothar& Philipp.

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24 Foto: Steindy/Wikipedia

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34 Wilhelm Paula Siegfried Foto: Lotse/Wikipoedia

35 Vong WPS her Foto: Lotse/Wikipoedia

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39 »Business-Software die Spaß macht«

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46 »Business-Software die Spaß macht«

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51 Tactical Design Entity Bausteine Domain Event Aggregate Factory Value Object Ubiquitous Language Domain Expert Event Storming Bounded Context Context Mapping Domain Model Strategic Design

52 Hexagonal Architecture Microservices CQRS Event Sourcing Design by Contract Agile Scrum Extreme Programming

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54 Foto: Gemeinfrei/Pixabay

55 Foto: Rabe!/Wikipedia

56 Foto: Xocolatl/Wikipedia

57 Entwurf: Karl Peglau/Gemeinfrei

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62 Software!=

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64 ?

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68 Software Domäne

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71 Fachwissen

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73 Groß Klein

74 BIG

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79 Bounded Context

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83 SMALL

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86 public class Konto { //... }

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88 public class Konto { public void zahleein(betrag b) //... }

89 public class Konto { public void zahleein(betrag b) //... public void zahleaus(betrag b) //... }

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91 public class Konto { public void setsaldo(betrag b) //... }

92 public class Konto { public void setsaldo(betrag b) //... }

93 Fachsprache

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96 Technische

97 Method A Visual Studio X Class B Inheritance Eclipse O/R-Mapping Interface Client Linux Windows Database Server

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100 Kran Container Frachtbrief 4300 Containernummer Twistlock

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103 Fachbegriff Fachbegriff

104 Technik Technik

105 Ubiquitous Language

106 Allgegenwärtige Sprache

107 Containernummer

108 Containernummer

109 Containernummer

110 CNR

111 public class Containernummer { //... }

112 Containernummer Containernummer Containernummer public class Containernummer { //... }

113 There are only two hard things in Computer Science: cache invalidation and naming things. Phil Karlton

114 There are only two hard things in Computer Science: cache invalidation, naming things, and off-by-one errors. Phil Karlton

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116 Figuren Schachuhr Brett König Spieler

117 Figuren Brett Spieler

118 Figuren Brett Spieler Nichtmenschlicher Spieler

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132 Tactical

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134 Entity

135 Auch: Business Object

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144 Versicherungspolice Baumaßnahme Urlaubsantrag Kaufvertrag Fahrauftrag

145 Value Object

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151 Postleitzahl IBAN IATA-Code GPS-Koordinate Containernummer

152 Domain Event

153 Aggregate Entity (Wurzel) Entity Entity Value Object Value Object

154 Service

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158 Entwurfsmetaphern

159 Foto: Dallas Museum of Art/Wikipedia

160 Foto: Christoph Michels/Wikipedia

161 Material

162 Foto: MrX/Wikipedia

163 Foto: Silsor/Wikipedia

164 Werkzeug

165 Foto: Wolfgagn Lonien/Wikipedia

166 Automat

167 Material ==

168 Foto: Christoph Michels/Wikipedia

169 Foto: MrX/Wikipedia

170 ==

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173 Foto: Svdmolen/Wikipedia

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175 Strategic

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188 Organizations which design systems are constrained to produce designs which are copies of the communication structures of these organizations. Melvin Conway

189 Organizations which design systems are constrained to produce designs which are copies of the communication structures of these organizations. Melvin Conway (1967)

190 The organization of the software and the organization of the software team will be congruent. Eric Raymond

191 If you have four groups working on a compiler, you'll get a 4-pass compiler. Eric Raymond

192 Microservice A Microservice B Microservice C UI UI UI Services Services Services Entities Value Objects Entities Value Objects Entities Value Objects

193 Microservice A Microservice B Microservice C Präsentations- Schicht Applikations- Schicht Fachdomänen- Schicht Direkter Zugriff Auf die DB Infrastruktur- Schicht

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210 @DDDger

211 Germanys first DDD conference

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213 Tutorium am

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215 Workshop Domain-Driven Design konkret wps.de/ddd

216 @hschwentner Foto: Henning Schwentner

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222 @hschwentner

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226 Henning