| /' |
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| '/ |
| @startuml |
| |
| title Write or Update flow for Secondary NodeStore |
| autonumber |
| |
| |
| participant "NodeStore\nClient" as NS |
| participant "Document\nNodeStore" as DNS |
| database "Cache" |
| database "Secondary Store" as SS |
| database Mongo |
| |
| NS -> DNS : Write /a/b@r1 |
| |
| DNS -> Mongo : Write /a/b@r1 |
| DNS -> Cache : Cache /a/b@r1 |
| DNS -> NS : Commit completed |
| |
| ... |
| autonumber 1 |
| == Local Change Event== |
| DNS -> SS : Content changed event /a/b |
| SS -> SS : Commit changes \n to local store and \n update head revision |
| |
| ... |
| autonumber 1 |
| == External Change Event== |
| DNS -> Mongo : Background read for head revision |
| DNS -> Mongo : Read Journal entry for changes \n done from other cluster nodes |
| Mongo -> DNS : Changed paths |
| DNS -> SS : Content changed event for external changes |
| SS -> SS : Commit changes \n to local store and \n update head revision |
| |
| ... |
| autonumber 1 |
| == Startup Sync== |
| DNS -> SS : Inform observer about current head revision at startup |
| SS -> DNS : Perform diff between local store \n head revision and current head revision |
| SS -> SS : Apply diff \n to local store and \n update head revision |
| |
| @enduml |