NodeJsHttpServer Monitoring

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

**Table 1** NodeJsHttpServer monitoring metrics
Category	Metric	Name	Description	Unit	Data Type	Default Aggregation Mode
Summary (total: URL call statistics summary)	errorCount	Errors	Total number of errors	-	INT	SUM
	invokeCount	Calls	Total number of calls	-	INT	SUM
	totalTime	Total RT	Total response time	-	INT	SUM
Status code (statuscode: APM counts URL call statistics based on the status code returned.)	code	Status Code	Status code	-	ENUM	LAST
	count	Calls	Number of times that the status code has occurred	-	INT	SUM
	url	Sample URL	Sample URL which returns the status code in a collection period	-	STRING	LAST
URL monitoring (url: APM counts URL call statistics by URL.)	url	url	Request URL	-	ENUM	LAST
	method	httpmethod	Request HTTP method	-	ENUM	LAST
	concurrentMax	Max. Concurrency	Maximum concurrency of the URL	-	INT	MAX
	errorCount	Errors	Number of call errors of the URL	-	INT	SUM
	invokeCount	Calls	Number of times that the URL is called	-	INT	SUM
	lastError	Error Message	Error details	-	STRING	LAST
	maxTime	Max. RT	Maximum response time of the URL in a collection period	-	INT	MAX
	maxTimeNativeUrl	Slowest URL	Slowest URL in the collection period	-	STRING	LAST
	runningCount	Ongoing Executions	Number of tasks that are being executed at the time of collection	-	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	500–1,000 ms	Number of requests with 500–1,000 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
	ranges	Custom RT Range	Custom response time range	-	STRING	LAST
	totalTime	Total RT	Total response time of the URL	-	INT	SUM
Cluster call (user: APM counts URL call statistics based on the cluster ID of the caller.)	clusterId	Cluster ID	Cluster ID of the caller	-	ENUM	LAST
	invokeCount	Calls	Number of times the cluster is called	-	INT	SUM
	total1xxCount	1xx Count	Number of times that a 1xx status code was returned	-	INT	SUM
	total2xxCount	2xx Count	Number of times that a 2xx status code was returned	-	INT	SUM
	total3xxCount	3xx Count	Number of times that a 3xx status code was returned	-	INT	SUM
	total4xxCount	4xx Count	Number of times that a 4xx status code was returned	-	INT	SUM
	total5xxCount	5xx Count	Number of times that a 5xx status code was returned	-	INT	SUM
	totalTime	Total RT	Total response time for calling the cluster	-	INT	SUM
	errorCount	Errors	Number of times that the cluster fails to be called	-	INT	SUM