Once you’ve integrated with AWS CloudWatch, you have access to all metrics for the DocumentDB service, which is a fully managed, JSON based document store.

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To verify metrics are reporting, search for the metrics in the Metric details section of the Project Settings page.

The following table shows the DocumentDB metrics ingested by Lightstep.

Metric Name Unit Description
aws.documentdb.backup_retention_period_storage_used gib The total amount of backup storage used to support the point-in-time restore feature within the Amazon DocumentDB's retention window. Computed separately for each Amazon DocumentDB cluster.
aws.documentdb.change_stream_log_size mb The amount of storage used by the cluster to store the change stream log. This value affects the cost of the cluster. The change stream log size is a function of the amount of change happening on the cluster and the change stream retention duration.
aws.documentdb.cpu_utilization percent The percent of CPU used by an instance.
aws.documentdb.database_count count The number of count open on an instance at a one-minute frequency.
aws.documentdb.database_count_max count The maximum number of open database count on an instance in a one-minute period.
aws.documentdb.database_cursors count The number of cursors open on an instance at a one-minute frequency.
aws.documentdb.database_cursors_max count The maximum number of open cursors on an instance in a one-minute period.
aws.documentdb.database_cursors_timed_out count The number of cursors that timed out in a one-minute period.
aws.documentdb.freeable_memory bytes The amount of available random access memory.
aws.documentdb.free_local_storage mb The amount of storage available to each instance for temporary tables and logs. This value depends on the instance class. You can increase the amount of free storage space for an instance by choosing a larger instance class for your instance.
aws.documentdb.low_mem_throttle_queue_depth count The queue depth for requests that are throttled due to low available memory taken at a one-minute frequency.
aws.documentdb.low_mem_throttle_max_queue_depth count The maximum queue depth for requests that are throttled due to low available memory in a one-minute period.
aws.documentdb.low_mem_num_operations_throttled count The number of requests that are throttled due to low available memory in a one-minute period.
aws.documentdb.snapshot_storage_used gb The total amount of backup storage consumed by all snapshots for a given Amazon DocumentDB cluster outside its backup retention window. Included in the total reported by the TotalBackupStorageBilled metric. Computed separately for each Amazon DocumentDB cluster.
aws.documentdb.swap_usage percent The amount of swap space used on the instance.
aws.documentdb.total_backup_storage_billed bytes The total amount of backup storage billed for all snapshots for a given Amazon DocumentDB cluster outside its backup retention window.
aws.documentdb.transactions_open count The number of transactions open on an instance taken at a one-minute frequency.
aws.documentdb.transactions_open count The number of transactions open on an instance taken at a one-minute frequency.
aws.documentdb.transactions_open_max count The maximum number of transactions open on an instance in a one-minute period.
aws.documentdb.volume_bytes_used bytes The amount of storage used by your cluster in bytes. This value affects the cost of the cluster. For pricing information, see the Amazon DocumentDB product page.
aws.documentdb.db_cluster_replica_lag_maximum milliseconds The maximum amount of lag between the primary instance and each Amazon DocumentDB instance in the cluster.
aws.documentdb.db_cluster_replica_lag_minimum milliseconds The minimum amount of lag between the primary instance and each replica instance in the cluster.
aws.documentdb.db_instance_replica_lag milliseconds The amount of lag when replicating updates from the primary instance to a replica instance.
aws.documentdb.read_latency milliseconds The average amount of time taken per disk I/O operation.
aws.documentdb.write_latency milliseconds The average amount of time taken per disk I/O operation.
aws.documentdb.documents_deleted count The number of deleted documents in a one-minute period.
aws.documentdb.documents_inserted count The number of inserted documents in a one-minute period.
aws.documentdb.documents_returned count The number of returned documents in a one-minute period.
aws.documentdb.documents_updated count The number of updated documents in a one-minute period.
aws.documentdb.opcounters_command count The number of commands issued in a one-minute period.
aws.documentdb.opcounters_delete count The number of delete operations issued in a one-minute period.
aws.documentdb.opcounters_getmore count The number of getmores issued in a one-minute period.
aws.documentdb.opcounters_insert count The number of insert operations issued in a one-minute period.
aws.documentdb.opcounters_query count The number of queries issued in a one-minute period.
aws.documentdb.opcounters_update count The number of update operations issued in a one-minute period.
aws.documentdb.transactions_started count The number of transactions started on an instance in a one-minute period.
aws.documentdb.transactions_committed count The number of successful transactions on an instance in a one-minute period.
aws.documentdb.transactions_aborted count The number of unsuccessful transactions on an instance in a one-minute period.
aws.documentdb.ttl_deleted_documents count The number of documents removed by a time-to-live monitor in a one-minute period.
aws.documentdb.network_receive_throughput bytes/s The amount of network data received from clients by each instance in the cluster, measured in bytes per second. This does not include traffic between instances or between the cluster and its storage volume.
aws.documentdb.network_throughput bytes/s The total amount of network data sent and received by each instance in the Amazon DocumentDB cluster, measured in bytes per second. This does not include traffic between instances or between the cluster and its storage volume.
aws.documentdb.network_transmit_throughput bytes/s The amount of network data sent to clients by each instance in the cluster, measured in bytes per second. This does not include traffic between instances or between the cluster and its storage volume.
aws.documentdb.read_iops count/s The average number of disk read operations per second. Amazon DocumentDB reports read and write operations separately, and on one-minute intervals.
aws.documentdb.read_throughput bytes/s The average number of bytes read from disk per second.
aws.documentdb.volume_read_io_ps count/s The average number of billed read operations from the cluster storage volume, reported at 5-minute intervals. Billed read operations are calculated at the cluster volume level, aggregated from all instances in the cluster, and then reported at 5-minute intervals. The value is calculated by taking the value of the read operations metric over a 5-minute period.
aws.documentdb.volume_write_io_ps count/s The average number of billed write operations to the cluster storage volume, reported at 5-minute intervals. Billed write operations are calculated at the cluster volume level, aggregated from all instances in the cluster, and then reported at 5-minute intervals.
aws.documentdb.write_iops count/s The average number of disk write operations per second. Read and write operations are reported separately, on 1-minute intervals.
aws.documentdb.write_throughput bytes/s The average number of bytes written to disk per second.
aws.documentdb.buffer_cache_hit_ratio percent The proportion of requests that are served by the buffer cache.
aws.documentdb.disk_queue_depth count the number of concurrent write requests to the distributed storage volume.
aws.documentdb.engine_uptime seconds The amount of time that the instance has been running.
aws.documentdb.index_buffer_cache_hit_ratio percent The proportion of index requests that are served by the buffer cache. You might see a spike greater than 100% for the metric right after you drop an index, collection, or database.
aws.documentdb.cpu_credit_usage count The number of CPU credits spent during the measurement period.
aws.documentdb.cpu_credit_balance count The number of CPU credits that an instance has accrued. This balance is depleted when the CPU bursts and CPU credits are spent more quickly than they are earned.
aws.documentdb.cpu_surplus_credit_balance count The number of surplus CPU credits spent to sustain CPU performance when the CPUCreditBalance value is zero.
aws.documentdb.cpu_surplus_credits_charged count The number of surplus CPU credits exceeding the maximum allowed threshold for a single hour.