Cart System - Add Items

Diagram v1.6.2025

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Source Code

Cart System - Add Items Source

cart-add-items.sd

-- render at https://sequencediagram.org
entryspacing 0.7
frame #lightblue Cart System - Add Items

participantspacing 2
entryspacing 0.5
bottomparticipants

actor "Customer" as customer #orange
lifelinestyle customer #lightgray:1:solid

participant "Louvelle Backend" as backend #D35DC5
lifelinestyle backend #lightgray:1:solid

database "Carts Table" as carts #lightgreen
lifelinestyle carts #lightgray:1:solid

database "Items Table" as items #lightblue
lifelinestyle items #lightgray:1:solid

participant "Temporal" as temp #orange
lifelinestyle temp #lightgray:1:solid

customer -> backend:Add To Cart
<color #gray>item id, user id</color>

backend -> items:Set Item Status: <color #blue>IN CART</color>

space 0.1

# First Item

alt FIRST ITEM

backend -> carts : Create Cart
activate carts
deactivateafter carts

backend -> temp: Create Cart Timer Workflow
activate temp
deactivateafter temp

temp --> backend:Return <color #green>WorkflowID</color>

parallel
rbox over temp:<align center>Cart Timer #1
<color #gray>10 Minutes</color>
space -4
parallelend

backend --> carts:Store <color #green>WorkflowID</color>
activate carts
deactivateafter carts

space

# Additional Items

else ADDITIONAL ITEMS

backend -> temp:Cancel Existing Timer <color #blue>(WorkflowID)
activate temp
deactivateafter temp

backend -> temp: Start New Timer Workflow
activate temp
deactivateafter temp

temp --> backend:Return <color #green>WorkflowID</color>

parallel
rbox over temp:<align center>Cart Timer #2
<color #gray>10 Minutes</color>
space -4
parallelend

backend --> carts:Store <color #green>WorkflowID</color>
activate carts
deactivateafter carts

space 2

end