SCRUM FOR DEVELOPERS Mohamed Ahmed Meligy Senior Software Engineer SilverKey Technologies, LLC weblogs.asp.net/meligy

Mohamed Ahmed Meligy

Senior Software Engineer

SilverKey Technologies, LLC

weblogs.asp.net/meligy

Project Management Methodologies You heard about them in collage

Waterfall Model

Does it work ??? Who goes home at 5 PM ? Why did Windows Vista take 5 years ?

Every Project Story The customer knows nothing The developer thinks about new technologies The PM thinks about the deadline The analyst thinks he knows everything He got “everything” from the customer, who knows “nothing” ;-)

The customer knows nothing

The developer thinks about new technologies

The PM thinks about the deadline

The analyst thinks he knows everything

He got “everything” from the customer, who knows “nothing” ;-)

Every Project Story The developer: “I can do it in 3 months ” The PM: “You’ll do it in 2 months ” The project takes 4-5 month

The developer: “I can do it in 3 months ”

The PM: “You’ll do it in 2 months ”

The project takes 4-5 month

Every Project Story 1 st Month: Everybody is happy 2 nd Month: Customer sees “something” 3 rd Month: Customer makes tons of changes The developer screams The project manager blames …. ??? Last Month: Everybody is at office t ill 8-10 PM Every DAY: The PM: Developer, you’re not done yet? LOSER!!

1 st Month: Everybody is happy

2 nd Month: Customer sees “something”

3 rd Month: Customer makes tons of changes

The developer screams

The project manager blames …. ???

Last Month: Everybody is at office t ill 8-10 PM

Every DAY:

The PM: Developer, you’re not done yet? LOSER!!

Why does it happen? Requirements are not fully understood at the beginning of the process. Requirements change during the process . The process becomes unpredictable when new tools and technologies are used.

Requirements are not fully understood at the beginning of the process.

Requirements change during the process .

The process becomes unpredictable when new tools and technologies are used.

Other Methodologies Spiral CMMI Rational Rose Agile

Spiral

CMMI

Rational Rose

Agile

Agile Who’s this ???

Agile Manifesto Individuals and interactions Over processes and tools Working software Over comprehensive documentation Customer collaboration Over contract negotiation Responding to change O ver following a plan

Individuals and interactions

Over processes and tools

Working software

Over comprehensive documentation

Customer collaboration

Over contract negotiation

Responding to change

O ver following a plan

Agile Methodologies eXtreme Programming (XP) Pair Programming Test Driven Development Continuous Integration Refactoring, Coding Standards, etc… Adaptive Software Development speculate, collaborate, and learn cycles Scrum

eXtreme Programming (XP)

Pair Programming

Test Driven Development

Continuous Integration

Refactoring, Coding Standards, etc…

Adaptive Software Development

speculate, collaborate, and learn cycles

Scrum

SCRUM??

Scrum Model 2-4 weeks 7-8 hours Product Backlog As prioritized by Product Owner Sprint Backlog Backlog tasks expanded by team Potentially Shippable Product Increment Daily Scrum Meeting Source: Adapted from “Agile Software Development with Scrum” by Ken Schwaber and Mike Beedle.

Prerequisites Small Team Good People Common Sense

Small Team

Good People

Common Sense

Product Backlog List of work items during the entire project

Sprint A certain period of time with specific deliverables Lasts for 2-4 weeks – NO MORE NO LESS

Sprint Before Start: Sprint Planning Starts with Sprint Backlog Choose highest priority items remaining in product backlog Ends with Deliverables New Features Developed / Old Bugs Fixed Sprint Zero and Sprint One might deliver documents ! Architecture Documents UI Prototype After End: Sprint Review Usually just before next sprint planning

Before Start: Sprint Planning

Starts with Sprint Backlog

Choose highest priority items remaining in product backlog

Ends with Deliverables

New Features Developed / Old Bugs Fixed

Sprint Zero and Sprint One might deliver documents !

Architecture Documents

UI Prototype

After End: Sprint Review

Usually just before next sprint planning

Sprint Daily Meetings What did you do Yesterday ? What will you do today ? Do you have any problems ?

Sprint Daily Meetings Stand up Meetings 15 Minutes Max. Well, don’t exceed 30 minutes at least Entire Team

Stand up Meetings

15 Minutes Max.

Well, don’t exceed 30 minutes at least

Entire Team

Scrum Roles Product Owner Scrum Master Project Team

Scrum Roles: Product Owner Possibly a Product Manager or Project Sponsor That’s what we call an “analyst” Marketing Internal Customer etc. Not a technical guy, BUT ….

Possibly a Product Manager or Project Sponsor

That’s what we call an “analyst”

Marketing

Internal Customer

etc.

Not a technical guy, BUT ….

Scrum Roles: Scrum Master Responsible for enacting Scrum values and practices Manages the sprint meeting Does the sprint reporting Typically a Project Manager or Team Leader That’s what the books say I have played it a different way

Responsible for enacting Scrum values and practices

Manages the sprint meeting

Does the sprint reporting

Typically a Project Manager or Team Leader

That’s what the books say

I have played it a different way

Scrum Roles: Project Team Cross-functional QA Developers UI Designers etc 5-10 members (as the books say) I’d rather 5 to 7 MAX per team

Cross-functional

QA

Developers

UI Designers

etc

5-10 members (as the books say)

I’d rather 5 to 7 MAX per team

Scrum Artifacts Product Backlog Sprint Backlog Burndown Chart

Burndown Chart

SCRUM AND YOU The Developer

The Developer

Self Management 50% for managing yourself 25% for managing your boss 25% for managing everybody else (Dee Hock – Founder of VISA)

Accept Flexible Deliverables As this means flexible schedule Try not to hate the customer :-D

Be Reliable You are a good guy / gal ;-) Common Sense

Be Reliable You’ll make mistakes APOLOGIZE

Take Care You have your good day and bad day You have your productive and your slow weeks

Take Care Do NOT extend a sprint period Do I have the choice??

The Real World Reality has a tendency to make a beautiful project plan ugly

Problems! There’s no silver bullet

Where to go www.controlchaos.com www.scrumalliance.org My weblog weblogs.asp.net/meligy Ken Schwaber, 2004 ISBN 073561993X

www.controlchaos.com

www.scrumalliance.org

My weblog

weblogs.asp.net/meligy