Streaming APIs

Has anyone used any of the streaming APIs or methodologies from various monitoring tools out there? If so, can you share your experiences, what you needed them for, and how well they worked?

I know of the following but if you know of others, let me know:

• New Relic’s Streaming API: This and this

• Datadog’s Streaming API/Observability Pipeline

• It looks like Dynatrace’s Data Lakehouse 

• Azure monitoring’s streaming API

• Zenoss’s data streaming methods