Fabriceli commented on PR #8928:
URL: https://github.com/apache/apisix/pull/8928#issuecomment-1451879256
It can create TWO event to watch the services and update the `all_services`:
```mermaid
flowchart TD
subgraph Event1: watch catalog
A[Start] --> catalog{Catalog any change?}
catalog -->|Yes| health[Query nodes]
health --> D[Post Event1]
catalog ---->|No| E[End]
D --> E
end
subgraph Event2: watch health
A2[Start] --> health2{health any change?}
health2 -->|Yes| catalog2[Query services]
catalog2 --> H[Query nodes]
H --> D2[Post Event2]
health2 ---->|No| E2[End]
D2 --> E2
end
subgraph Events register
A3[Start] --> register[Register Event]
register --> update[Update all services]
update --> e[End]
end
```
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