White Lion Bar

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White Lion Bar
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The Rhapsody Model
Whiskey
Beer
Bartender
Customers
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The Rhapsody Model (cont)
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Description

• Customers idle, beer, whiskey and puking in the
  toilet.
• Bartender Fills beer and whiskey simultaneously.
  
• First come first served.
• Beer poured in two stages.
• Toilet One customer at a time.

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Scenarios

• Beer Keg empty.
• Whiskey bottle empty.
• Toilet break down.

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Bartender
Beer
Whiskey
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Customer
At the Bar
Feeling Sick
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Play Engine
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Broken Toilet
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Broken Toilet No Beer
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Beer Keg Empty Toilet Service
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Beer filled Toilet Whiskey service
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Parking Regulations

• Only one service vendor can park by our bar.
• First design Apply some synchronization
  mechanism (i.e. semaphore).
• Problems The play engine prefers promoting
  condition statements, and so race condition is
  prone to happen.

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Parking Regulations (cont)

• Idea smart play out.
• Our solution A Parking warden was hired.
• The parking is granted in
  time slots.

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Play Engine Parking Warden
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Thanks
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Cheers !!