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May 2005

May 2005. Greg Giacovelli – Nick Mancuso – Shaun Newsum – Jean-Paul Pietraru – Nick Stroh. Agenda. Background Motivation Requirements Schedule Metrics Architecture Tier Design Domain experience. Background. Replace the “try” system Compiles, tests, and saves students submissions

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May 2005

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  1. May 2005 Greg Giacovelli – Nick Mancuso – Shaun Newsum – Jean-Paul Pietraru – Nick Stroh

  2. Agenda • Background • Motivation • Requirements • Schedule • Metrics • Architecture • Tier Design • Domain experience

  3. Background • Replace the “try” system • Compiles, tests, and saves students submissions • Provides immediate feedback to the student • Collection of scripts written in the early 1990’s • Issues: • Steep learning curve • Performance issues at peak hours

  4. Motivation • New Features • Cross platform support • Small learning curve • A solid framework • Provide clear ports for adding future customizations & expansions • Separate concerns to ease maintenance • Distribute CPU load

  5. Requirements • Gathered from: • Project sponsor • Personal experience with old system • Sample try lab configuration • Tested against: • Project sponsor • try manuals • SRS is thorough & will be useful to future developers

  6. Schedule

  7. Metrics

  8. Metrics

  9. Solution • Architectural framework • May be easily extended to meet all requirements • Runs in any J2EE-compliant application server. • Scalable by distributing amongst multiple hosts • Distributed submission processing • Compile & testing is completed by an array of clients • Increases system performance • Scales up by adding more client machines

  10. Solution • Model-View-Controller • Decouples • UI from business logic • Business logic from data • Web services • Interface to the business logic • Custom UI’s & scripts may be written

  11. Architecture

  12. Web Tier

  13. Business Tier

  14. Data Tier

  15. Middle Tier

  16. Problems we encountered • Configuration issues • jBoss • Integration tests • J2EE complexity • Learning curve

  17. Post Mortem • What went well: • Solid documentation throughout. • Proof-of-concept or better code for each major component of the system. • What we learned from: • Too much wind-up time • Should have dropped JBoss early

  18. questions?comments?concerns?

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