Please use the form below to provide your feedback. Because your feedback is valuable to us, the information you submit in this form is recorded in our issue tracking system (JIRA), which is publicly available. You can track the status of your feedback using the ticket number displayed in the dialog once you submit the form.

Query Service Metrics

    March 16, 2025
    + 12
    A list of the metrics provided by the Query Service.

    The following Query Service metrics can be queried by means of the REST APIs described in Statistics.

    Tip

    • The x.y.z badge shows the Couchbase Server version the metric was added in.

    • The type / unit badge shows shows the Prometheus type and unit (if present).

    n1ql_active_requests     7.0.0gauge

    Total number of active requests.

    n1ql_allocated_values     7.6.0counter

    The total number of values allocated in the query engine.

    n1ql_at_plus     7.0.0counter

    Total number of N1QL requests with at_plus index consistency.

    n1ql_audit_actions     7.0.0counter

    The total number of audit records sent to the server. Some requests cause more than one audit record to be emitted. Records in the output queue that have not yet been sent to the server are not counted.

    n1ql_audit_actions_failed     7.0.0counter

    The total number of audit records sent to the server that failed.

    n1ql_audit_requests_filtered     7.0.0counter

    The number of potentially auditable requests that cause no audit action to be taken.

    n1ql_audit_requests_total     7.0.0counter

    The total number of potentially auditable requests sent to the query engine.

    n1ql_bulk_get_errors     7.2.4counter

    Count of errors due to bulk get operations

    n1ql_cancelled     7.0.0counter

    Total number of cancelled requests.

    n1ql_cas_mismatch_errors     7.2.4counter

    Count of CAS mismatch errors

    n1ql_deletes     7.0.0counter

    Total number of DELETE operations.

    n1ql_errors     7.0.0counter

    The total number of N1QL errors returned so far.

    n1ql_index_scans     7.0.0counter

    Total number of secondary index scans.

    n1ql_index_scans_fts     7.2.4counter

    Total number of index scans performed by FTS.

    n1ql_index_scans_gsi     7.2.4counter

    Total number of index scans performed by GSI.

    n1ql_index_scans_seq     7.6.0counter

    Total number of sequential scans.

    n1ql_inserts     7.0.0counter

    Total number of INSERT operations.

    n1ql_invalid_requests     7.0.0counter

    Total number of requests for unsupported endpoints.

    n1ql_load     7.0.0gauge

    The current utilization factor of the servicers on the query node.

    n1ql_load_factor     7.6.0gauge

    The total load factor of the query node.

    n1ql_mem_quota_exceeded_errors     7.2.4counter

    Count of memory quota exceeded errors

    n1ql_mutations     7.0.0counter

    Total number of document mutations.

    n1ql_node_memory     7.6.0gauge / bytes

    The total size of in use memory in the query node.

    n1ql_prepared     7.0.0counter

    Total number of prepared statements executed.

    n1ql_primary_scans     7.0.0counter

    Total number of primary index scans.

    n1ql_primary_scans_fts     7.2.4counter

    Total number of primary scans performed by FTS.

    n1ql_primary_scans_gsi     7.2.4counter

    Total number of primary scans performed by GSI.

    n1ql_primary_scans_seq     7.6.0counter

    Total number of primary sequential scans.

    n1ql_queued_requests     7.0.0gauge

    Total number of queued requests.

    n1ql_request_time     7.0.0counter / nanoseconds

    Total end-to-end time to process all queries.

    n1ql_requests     7.0.0counter

    Total number of N1QL requests.

    n1ql_requests_1000ms     7.0.0counter

    Number of queries that take longer than 1000ms.

    n1ql_requests_250ms     7.0.0counter

    Number of queries that take longer than 250ms.

    n1ql_requests_5000ms     7.0.0counter

    Number of queries that take longer than 5000ms.

    n1ql_requests_500ms     7.0.0counter

    Number of queries that take longer than 500ms.

    n1ql_result_count     7.0.0counter

    Total number of results (documents) returned by the query engine.

    n1ql_result_size     7.0.0counter / bytes

    Total size of data returned by the query engine.

    n1ql_scan_plus     7.0.0counter

    Total number of N1QL requests with request_plus index consistency.

    n1ql_selects     7.0.0counter

    Total number of SELECT requests.

    n1ql_service_time     7.0.0counter / nanoseconds

    Time to execute all queries.

    n1ql_temp_space_errors     7.6.0counter

    Count of temp space related errors

    n1ql_timeouts     7.2.4counter

    Count of request timeout errors

    n1ql_transaction_time     7.0.0counter / nanoseconds

    Total elapsed time of transactions so far.

    n1ql_transactions     7.0.0counter

    Total number of transactions.

    n1ql_unauthorized_users     7.2.4counter

    Count of unauthorized access errors

    n1ql_unbounded     7.0.0counter

    Total number of N1QL requests with not_bounded index consistency.

    n1ql_updates     7.0.0counter

    Total number of UPDATE requests.

    n1ql_warnings     7.0.0counter

    The total number of N1QL warnings returned so far.