cache-aside-write-through.gv

@startdot
digraph g {
  graph [bgcolor="transparent"];
  rankdir=TB;
  ranksep=0.1;
  "application" [ shape=circle style = "filled" penwidth = 1 fillcolor = "white" label="app" ];
  "cache" [ style="filled,rounded" shape=mrecord color="#9c27b0" fillcolor="#9c27b0" xlabel="Cache" label=<<table border="0" cellborder="1" cellpadding="10" bgcolor="white"><tr><td bgcolor="red" PORT="entry"></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>> ];
  "data_store" [ style="filled" shape=folder color="#64b5f6" fillcolor="#64b5f6" xlabel="Data Store" label=<<table border="0" cellborder="1" cellpadding="10" bgcolor="white"><tr><td bgcolor="red" PORT="entry"></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr></table>>];
  application -> data_store [label="1"];
  application -> cache:entry [ penwidth = 1 fontsize = 20 fontcolor = "black" label = "2" ];
}
@enddot

local-cache-inconsitence

@startuml
database database [
  \n\ndatabase\n\n\n
]
note bottom
从时间点 X 到 Y 数据变化了
end note

frame "Application Instance 1" {
  control app1 [
    app
  ]
  storage storage1 [
    |    |    |    |<#FF8080>    |
    |<#FF8080>    |    |    |    |
    |    |<#FF8080>    |    |    |
    |    |    |    |    |
  ]
  app1 <-down-> storage1
}
note left
 X 时间点的快照
end note



frame "Application Instance 2" {
  control app2 [
    app
  ]
  storage storage2 [
    |    |    |    |    |
    |<#64b5f6>    |    |    |<#64b5f6>    |
    |    |    |    |    |
    |    |    |    |<#64b5f6>    |
  ]
  app2 <-down-> storage2
}
note left
 Y 时间点的快照
end note

database -left-> app1:在 X 时间点获取数据


database -right-> app2:在 Y 时间点获取数据
@enduml

shared-cache-service

@startuml
database database [
  \n\ndatabase\n\n\n
]


control app1

control app2

frame "Cache Service" {
  storage storage1 [
    |    |    |    |<#FF8080>    |
    |<#FF8080>    |    |    |    |
    |    |<#FF8080>    |    |    |
    |    |    |    |    |
  ]
}

database -right-> storage1

app1 <-down-> storage1
app2 <-up-> storage1
@enduml