sequence1.uml

@startuml
autonumber

actor "мастер" as user
boundary "приложение" as app
control "ajax" as ajax
control "http" as web
control "php" as php
entity "память" as mem
control "контроллер" as ctl

user -> app
app -> ajax
activate ajax
ajax -> web
activate web

web -> php
activate php
php -> mem
activate mem
mem --> php
deactivate mem

php -> ctl
activate ctl
ctl --> php
deactivate ctl

php --> web
deactivate php
web --> ajax
deactivate web
ajax --> app
deactivate ajax

app --> user
@enduml