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OpenTelemetry Metrics Documentation

Apollo Backend

HTTP Metrics

Metric Name	Type	Description	Attributes
http.requests.total	Counter	Total HTTP requests	method, path, status
http.request.duration	Histogram	HTTP request duration (ms)	method, path, status
http.request.size	Histogram	HTTP request size (bytes)	method, path
http.response.size	Histogram	HTTP response size (bytes)	method, path, status
http.errors.total	Counter	Total HTTP errors	method, path, status
http.4xx.errors.total	Counter	4xx client errors	method, path, status
http.5xx.errors.total	Counter	5xx server errors	method, path, status

Database Metrics

Metric Name	Type	Description	Attributes
db.queries.total	Counter	Total database queries	model, operation
db.query.duration	Histogram	Database query duration (ms)	model, operation
db.connections.active	Gauge	Active database connections	-
db.errors.total	Counter	Total database errors	model, operation

Business Logic Metrics

Metric Name	Type	Description	Attributes
business.operations.total	Counter	Total business operations	Custom
business.operation.duration	Histogram	Business operation duration (ms)	Custom
business.errors.total	Counter	Total business errors	Custom

Cache Metrics

Metric Name	Type	Description	Attributes
cache.hits.total	Counter	Total cache hits	Custom
cache.misses.total	Counter	Total cache misses	Custom
cache.operation.duration	Histogram	Cache operation duration (ms)	Custom

Queue Metrics

Metric Name	Type	Description	Attributes
queue.size	Gauge	Current queue size	Custom
queue.operations.total	Counter	Total queue operations	Custom
queue.operation.duration	Histogram	Queue operation duration (ms)	Custom

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Thermos

Action & Trigger Error Metrics

Metric Name	Type	Description	Attributes
action.error	Counter	Action execution errors	error_type, app, action, group
trigger.error	Counter	Trigger execution errors	error_type, app, trigger, group

Polling Trigger Metrics

Metric Name	Type	Description	Attributes
polling.trigger.runs.total	Counter	Total polling trigger runs	-
polling.trigger.runs.chunked	Counter	Chunked polling trigger runs	-
polling.trigger.runs.unchunked	Counter	Unchunked polling trigger runs	-
polling.trigger.runs.duplicate	Counter	Duplicate polling trigger runs	-
polling.trigger.tool_error	Counter	Polling trigger tool errors	-
polling.trigger.chunk_updates_error	Counter	Polling trigger chunk update errors	-
polling.trigger.apollo_updates_error	Counter	Polling trigger Apollo update errors	-
polling.trigger.auth_refresh_error	Counter	Polling trigger auth refresh errors	-

Webhook Trigger Metrics

Metric Name	Type	Description	Attributes
webhook.trigger.matched	Counter	Matched webhook triggers	-
webhook.trigger.non_matched	Counter	Non-matched webhook triggers	-
webhook.trigger.tool_error	Counter	Webhook trigger tool errors	-
webhook.trigger.apollo_error	Counter	Webhook trigger Apollo errors	-

Auth Refresh Workflow Metrics

Metric Name	Type	Description	Attributes
auth_refresh.workflow.success	Counter	Successful auth refresh workflows	app, group
auth_refresh.workflow.failed	Counter	Failed auth refresh workflows	app, group
auth_refresh.workflow.skipped	Counter	Skipped auth refresh workflows	app, group

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