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2021-05-03 10:06:16 +01:00

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graph LR
VS{{"verify sender (SK)"}}
VR{{"verify recipient (RK)"}}
S(sender) -->|msg| VS
subgraph "server (queue RID, SID)"
VS --> DB[("storage")]
DB --> VR
end
R(recipient) -->|"1) sub"| VR
VR -->|"2) msg"| R