Pulsar subscription high number of backlog entries
warning

Description The number of subscription backlog entries is over 5k
Query for 1h
>>>
	
				
					
					
						sum
					
				
			
				
					(
				
			
				
					
				
			
				
					) by (subscription) > 5000
				
			
    
Query Explanation

The query sums the pulsar_subscription_back_log metric across all instances for each subscription label and checks if the total exceeds 5,000 entries. The alert fires whenever any subscription’s combined backlog count is greater than 5 k messages.

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