Cassandra Monitoring

This section describes the types, names, and meanings of Cassandra metrics collected by APM.

**Table 1** Collection parameters for Cassandra monitoring
Parameter	Data Type	Application Type	Default	Supported Start Agent Version	Supported End Agent Version	Description
Threshold (ms) for Reporting Connection Trace	integer	JAVA	1	2.2.9	-	Threshold for reporting borrowConnection() method traces. If the threshold is not exceeded, such traces will not be reported.
Collect Original CQL Statement or Not	radio	JAVA	false	2.2.9	-	Whether to collect original CQL statements

**Table 2** Cassandra metrics
Category	Metric	Name	Description	Unit	Data Type	Default Aggregation Mode
CQL call (Cql)	cql	cql	Executed CQL Statement	-	ENUM	LAST
	concurrentMax	Max. Concurrency	Maximum concurrency	-	INT	MAX
	errorCount	Errors	Number of errors	-	INT	SUM
	errorTraceId	Error Trace ID	ID of the trace that encounters an error in a collection period	-	STRING	LAST
	invokeCount	Calls	Number of calls	-	INT	SUM
	lastError	Error Message	Error message	-	STRING	LAST
	maxTime	maxTime	Maximum response time	-	INT	MAX
	queryRowCount	Read Rows	Number of read rows	-	INT	SUM
	runningCount	Ongoing Executions	Number of executions of the method at the time of collection	-	INT	SUM
	slowTraceId	Slow Trace ID	ID of the slowest trace in a collection period	-	STRING	LAST
	totalTime	totalTime	Total response time	-	INT	SUM
	range1	0–10 ms	Number of requests with 0–10 ms response time	-	INT	SUM
	range2	10–100 ms	Number of requests with 10–100 ms response time	-	INT	SUM
	range3	100–500 ms	Number of requests with 100–500 ms response time	-	INT	SUM
	range4	500–1000 ms	Number of requests with 500–1000 ms response time	-	INT	SUM
	range5	1–10s	Number of requests with 1–10s response time	-	INT	SUM
	range6	> 10s	Number of requests with response time longer than 10s	-	INT	SUM
Cassandra node call (node)	node	Node Address	Node address	-	ENUM	LAST
	concurrentMax	Max. Concurrency	Maximum concurrency	-	INT	MAX
	errorCount	Errors	Number of errors	-	INT	SUM
	errorTraceId	Error Trace ID	ID of the trace that encounters an error in a collection period	-	STRING	LAST
	slowTraceId	Slow Trace ID	ID of the slowest trace in a collection period	-	STRING	LAST
	invokeCount	Calls	Number of calls	-	INT	SUM
	lastError	Error Message	Error message	-	STRING	LAST
	maxTime	maxTime	Maximum response time	-	INT	MAX
	totalTime	totalTime	Total response time	-	INT	SUM
	range1	0–10 ms	Number of requests with 0–10 ms response time	-	INT	SUM
	range2	10–100 ms	Number of requests with 10–100 ms response time	-	INT	SUM
	range3	100–500 ms	Number of requests with 100–500 ms response time	-	INT	SUM
	range4	500–1000 ms	Number of requests with 500–1000 ms response time	-	INT	SUM
	range5	1–10s	Number of requests with 1–10s response time	-	INT	SUM
	range6	> 10s	Number of requests with response time longer than 10s	-	INT	SUM
Cassandra cluster call (cluster)	nodes	Cluster Node	Cluster node information	-	ENUM	LAST
	concurrentMax	Max. Concurrency	Maximum concurrency	-	INT	MAX
	errorCount	Errors	Number of errors	-	INT	SUM
	errorTraceId	Error Trace ID	ID of the trace that encounters an error in a collection period	-	STRING	LAST
	slowTraceId	Slow Trace ID	ID of the slowest trace in a collection period	-	STRING	LAST
	invokeCount	Calls	Number of calls	-	INT	SUM
	lastError	Error Message	Error message	-	STRING	LAST
	maxTime	maxTime	Maximum response time	-	INT	MAX
	totalTime	totalTime	Total response time	-	INT	SUM
	range1	0–10 ms	Number of requests with 0–10 ms response time	-	INT	SUM
	range2	10–100 ms	Number of requests with 10–100 ms response time	-	INT	SUM
	range3	100–500 ms	Number of requests with 100–500 ms response time	-	INT	SUM
	range4	500–1000 ms	Number of requests with 500–1000 ms response time	-	INT	SUM
	range5	1–10s	Number of requests with 1–10s response time	-	INT	SUM
	range6	> 10s	Number of requests with response time longer than 10s	-	INT	SUM
Connection details (connection)	host	Connected Host	Connected host	-	ENUM	LAST
	concurrentMax	Max. Concurrency	Maximum concurrency	-	INT	MAX
	invokeCount	Calls	Number of calls	-	INT	SUM
	totalTime	Total Time	Total time	-	INT	SUM
	errorCount	Errors	Number of errors	-	INT	SUM
	maxTime	Max. RT	Maximum response time	-	INT	SUM
	range1	0–10 ms	Number of requests with 0–10 ms response time	-	INT	SUM
	range2	10–100 ms	Number of requests with 10–100 ms response time	-	INT	SUM
	range3	100–500 ms	Number of requests with 100–500 ms response time	-	INT	SUM
	range4	500–1000 ms	Number of requests with 500–1000 ms response time	-	INT	SUM
	range5	1–10s	Number of requests with 1–10s response time	-	INT	SUM
	range6	> 10s	Number of requests with response time longer than 10s	-	INT	SUM
Exception (exception: Cassandra call exception statistics)	exceptionType	Exception Type	Exception type	-	ENUM	LAST
	causeType	Exception Class	Exception class	-	ENUM	LAST
	count	Count	Number of times the exception has occurred	-	INT	SUM
	message	Exception Message	Message returned when the exception has occurred	-	STRING	LAST
	stackTrace	stackTrace	Exception stack information	-	CLOB	LAST
Cassandra summary (total: summary of Cassandra call statistics)	invokeCount	Calls	Total number of calls	-	INT	SUM
	queryRowCount	Total Read Rows	Total number of read rows	-	INT	SUM
	errorCount	Total Errors	Total number of errors	-	INT	SUM
	totalTime	Total RT	Total response time	-	INT	SUM
Cassandra version (version)	version	Version	Version	-	STRING	LAST