one70six commented on issue #5854: Prometheus - Add Metrics Around Message Storage URL: https://github.com/apache/pulsar/issues/5854#issuecomment-568120360 @jiazhai thanks for the response! I would think: - pulsar_msg_ttl: Yes, the number of messages that will not be in backlog after a TTL. Or maybe you could calculate a histogram of the avg. TTL for 1m, 5m, 30m, 1h, etc. so that you can visualize how the messages are being affected by TTL. - pulsar_msg_retention: Yes, this aimed to show the messages in retention. After the TTL expires, the messages should show up here. You could also do a histogram here as well to visualize how the messages are being removed from Pulsar completely. Thanks!
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