[CURATOR-380] Service Discovery: ServiceCacheListener should receive the added or deleted service instance when notified

[jira-importer]

I think it's reasonable to receive the added/deleted service instance when ServiceCacheListener is notified, currently ServiceCacheListener only has one no-arg method:
public void cacheChanged();

Maybe we should add(or replace with) another two methods in ServiceCacheListener, like:

void onInstanceAdded(ServiceInstance instance);
void onInstancedRemoved(ServiceInstance instance);

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Originally reported by julyguo, imported from: Service Discovery: ServiceCacheListener should receive the added or deleted service instance when notified

• status: Open
• priority: Major
• resolution: Unresolved
• imported: 2025-01-21