Software-Entwicklung in der Praxis - scg.unibe.chscg.unibe.ch/download/lectures/p2/P2-13-Software-Entwicklung in der Praxis-2019.pdf · Software-Entwicklung in der Praxis | Stefan

© Zühlke 2018Software-Entwicklung in der Praxis | Stefan Reichhart May 31, 2019 Slide 1 of 58

Software-Entwicklung in der PraxisGastvortrag Vorlesung P2, Universität BernStefan Reichhart - [email protected]


Roadmap

• About Me

• Overview - Zühlke

• My current Project: «TiMo»

• Real Life Experience

• Questions & Discussion


About Me

L o p p i sNetstyle.ch

T i M o



Empowering Ideas


Zühlke - Daily


Zühlke - Intern

TechnologyDays

Academy

Focus Groups

Conferences, Bootcamps, …

Workshops,Hackathons, …

Courses, Seminars


About Zühlke

• Founded 1968

• Teams in Germany, United Kingdom, Austria, Serbia, Bulgaria, Singapore, Hong Kong and Switzerland

• 10’000+ innovation initiatives

• 1’000+ EmployeesBern: approx. 80

• Sales: 150 Mio. CHF


Switzerland: Schlieren + Bern


Project: « T i M o »Ticketing and Mobility Services


TiMoTicketing and Mobility Services

• Sales and Refunds of Tickets

• After-Sales Services (SAV)

• All kinds of services around travelling

Webshop

Mobile-App

Vending Machines

Counters, Agencies, VVs, Retailers, Luggage, L+F, …


TiMoServices for Partners, Retailers, Agencies, …

S B BServices

Disclaimer: The list of shown companies providing mobility services is not complete and the selection was arbitrarily made by the author of this document. The author is not related to any such company.


Simple Example

Ticket Sale

Journey from A to B

Calculation• Shortest, fastest, cheapest• Vias,• Combined means of transports• International Connections• Saving Options• …

Planning• from/to/vias• Class• …

Payment• Cards• LSV• Twint• Coupons• Promotions• …

Ticketing• Ticket• Receipt• Pdf• Swisspass• International Tickets• …

Additional Services• Luggage• Seat-Reservations• Bicycle• Ski• External Offers• …

Backoffice• Verification• Accounting• Taxation• …


Architecture – Overview

Micro-Services / Cloud

VendingMachines

Webshop

Mobile

…

Counter

B2BB2C

B2P

Orc

hest

ratio

nCloud / Micro-Services

channels


Architecture – Overview

Micro-Services / Cloud

Zahlung

BuchhaltungPlatzreserv

ationSAP

Reise

IT, DE, FR, ..

Datatrans

Postfinance

Twint

Gutschein

Promotion

Dossier

Gepäck

Angebote

…Quittung

…

Kunde

Foto

Identifikation

Freizeit

ArchivJournal

Anbieter

Nova

Druck

Partner

Verträge

QR-Code


«Technologies»Overview

Java 8/11Maven SpringBoot Apache Tomcat

ActiveMQDB/2

Oracle ExadataH2

HTMLGitCSS

Javascript

Jenkins

Confluence

Jira

JunitMockito Scrum

Splunk

Jrebel

EmmaSonarIntelliJ

Sparx EA

Json

Papier & Whiteboards

Coffee

Pizza

Large-Space OfficeChocolate

AngularTypeScript

Moqups UML

Skype

Selenium

JMC JProfiler

Introscope Kafka

XPHysterix

Teams

SAFe

Agile

SpringOpenShift

JFrog

RE

New Relic

VictorOps

Kanban

Host

XML

Soap

Swagger

Excel

Browserstack

JSF

kibana

Jasmine

Jest

Docker

JMeter


TiMo «Factory»

Organisation

• Approx. 100 people

• Developers

• Project managers

• Usability engineers

• DB Experts

• …

• Multiple interdiciplinary teams

• Each team covers a «core comain»

Finances

Journey Webshop

VendingMachines

Mobile

Sales After Sales

Contracts

«core domains»


Team «Helios»

Organisation

• Core Domain «Finances»

• Distributed Team

• Worblaufen

• Belgrade (Serbia)

• 8 Developers

• 1 Scrum Master

• 1 Triage Manager

• 1 Business Expert

JournalAccounting

Payments

Finances

M o n e y


Real Life Experiences


Agile, XP, Scrum, …

My daily work as a developer



Right now …

▪ Java Developer

▪ Frontend Expert

▪ (alternating) BugSpoc

▪ (alternating) DevOps

No additional roles or responsibilities

Programming Requirements Solutions

Testing Administration Improvements



Programming Requirements Solutions Testing/Quality Administration Improvements

Start-Up«New Products»

Loppis«Replace Legacy»

TiMo«Continue & Improve»


The daily (and never ending) challenges


The daily (and never ending) challenges

• Specifications

• Requirements

• Solutions

• Wishes

• Workflows

• …

• Know-How

• Courage


Communication


CommunicationBasic rules: "Agile Mindset"

• Direct + honest

• Flexible + simple

• Open + transparent

• Address problems & conficts («Error Culture»)

Also very important …

• No heroes & looser

• No Blaming, "Finger-Pointing", …


Workspace: Social Conflict Zone, Comfort Zone, …

Address problems

→Workplace & -environment is extraordinary important


Nearshore Projects

«Distributed» Teams

Problem:

• Most things are «implicit», «natural», «self-evident»

Examples:

• Language (gesture, eye-contact, …)

• Knowledge

• Information

• …


Conflicts

Fact:

• Workplace with «no conflicts» does not exist

Learn to respectfully and correctly …

• … give feedback

• … accept feedback

• … criticize

• … solve conflicts


CommunicationTechnical, business

Short-term - communicate thoughts:

• Whiteboards

• Post-it / Stickies

• Paper

• Team, Slack, …

• …

→ Fast, simple, direct, efficient

Long-term - preserve knowledge

• Confluence KB

• Sparx EA (Umls, DB-Schemas)

• Jira Stories & Tasks

• Git / Reviewing

• File-System

→ Knowledge Database


CommunicationTechnical, business, …

Short-term - communicate thoughts:

• Whiteboards

• Post-it / Stickies

• Paper

• Team, Slack, …

• …

→ Fast, simple, direct, efficient

Long-term - preserve knowledge

• Confluence KB

• Sparx EA (Umls, DB-Schemas)

• Jira Stories & Tasks

• Git / Reviewing

• File-System

→ Knowledge Database


Software-Quality(OO) Patterns


(Very) large projects

Software-Quality

Problem:

• OO Patterns are very «low level»

• They cannot solve everything

There is more …

• Architectural Patterns ( Enterprise Application Architecture )

TCC

Web Presentation

Transactional Concurrency

LayeringMVVM


Code-Style, Code-Checks, …

Software-Quality


Junit, Mockito, Emma, …

Testing


Testing Pyramid

Testing

Varying and defined by …

• project

• team

• and/or company

Unit

Component

System / Integration

E2E

Automatic UI Tests

Acceptance

Manual UI Tests

tech

nica

lbu

sine

ss


Software Quality

Test Quality ?


Software Quality

Test Quality ?


Code Reviews


Story is realized, functional, working, …

"Definition of Done"

• Code Conventions

• Tests

• Code Coverage

• Manual + automatic UI Tests

• Documentation

• Code-Review

• …


"Definition of Done"


Jenkins, JFrog, OpenShift, …

CI – Continous Integration

G I T

buildbranch / commit

integratedevelop

OpenShift

deploy & runsnapshot


Jenkins, JFrog, OpenShift, …

CD – Continous Deployment

• (live) Production Release every 9 weeks

IR

IC

EC

integration productiontestsnapshot

weeklyafter commit

IR

IC

EClive


Software Growth & Evolution

• New Features

• Requirements change

• Over-Engineering


Software Growth & Evolution


Software Evolution

Architecural Vision• Have a common goal + solution

• Everyone should understand it

• Work together !


Software Evolution

• Apply OO Patterns consequently

• Review and challenge code and architecture

• Adapt architecture regularly

• Code Reviews

• Refactorings / Refactoring Patterns

• Throw away code

• …


Software Evolution

• Apply OO Patterns consequently

• Review and challenge code and architecture

• Adapt architecture regularly

• Code Reviews

• Refactorings / Refactoring Patterns

• Throw away code

• … Good Tests !!!


One more thing …


Questions …Stefan Reichhart - [email protected]

Feedback ☺https://de.surveymonkey.com/r/MPJY5NT

Documents

Software-Entwicklung in der Praxis - scg.unibe.chscg.unibe.ch/download/lectures/p2/P2-13-Software-Entwicklung in der Praxis-2019.pdf · Software-Entwicklung in der Praxis | Stefan