@startuml

skinparam handwritten true
skinparam monochrome true
skinparam roundcorner 15

skinparam sequence {
    ArrowThickness 3

    DividerFontColor Black
    DividerFontName Comic Sans MS
    DividerFontSize 15
    DividerFontStyle Italic

    DelayFontColor Black
    DelayFontName Comic Sans MS
    DelayFontSize 15
    DelayFontStyle Italic

    TitleFontColor Black
    TitleFontName Comic Sans MS
    TitleFontStyle Italic
    TitleFontSize 25

	ArrowColor DeepSkyBlue
    ArrowFontColor Black
    ArrowFontName Comic Sans MS
    ArrowFontStyle Regular
    ArrowFontSize 19

	ActorBorderColor DeepSkyBlue

	LifeLineBorderColor blue
	LifeLineBackgroundColor #A9DCDF

	ParticipantBorderColor DeepSkyBlue
	ParticipantBackgroundColor LightBlue
	ParticipantFontName Comic Sans MS
	ParticipantFontSize 20
	ParticipantFontColor Black

	ActorBackgroundColor aqua
	ActorFontColor Black
	ActorFontSize 20
	ActorFontName Comic Sans MS
}

title netdata registry operation
actor "web browser" as user
participant "netdata 1" as n1
participant "registry 1" as r1
autonumber "<b>0."

== standard dashboard communication ==

user ->n1 : \
    hi, give me the dashboard

n1 --> user : \
    welcome, here it is...

... a few seconds later ...

== registry related communication ==

user -> n1 : \
    now give me registry information

n1 --> user: \
    here it is, talk to <b>registry 1</b>

note left of r1 #eee: \
    only your web browser \n\
    talks to the registry

user -> r1 : \
    Hey <b>registry 1</b>, \
I am accessing <b>netdata 1</b>...

r1 --> user : \
    nice!, here are other netdata servers \
you have accessed in the past

@enduml