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Parallel Block

A `par`/`and` block — messages that happen concurrently rather than strictly in sequence.

3 examples across every diagram type

Read more in the Mermaid docs →
Sequence diagram, Zombie Mermaid par [Fetch user data] [Fetch orders] Authenticate Get profile Get orders Combined response Client AuthService UserService OrderService
Sequence diagramSequence: Par Block
Sequence diagram, Zombie Mermaid par [Fetch data] Validate token Valid Get user User data Get orders Order list Send notification Queued Aggregate response Gateway Auth Users Orders Notify
Sequence diagramSequence: Microservice Orchestration
Sequence diagram, Zombie Mermaid par [a branch with a long descriptive title] [another branch with an equally long title] x y A B
Sequence diagramSequence: Long Block Tab And Divider Labels