Amazon DocumentDB Monitoring
Overview
Amazon DocumentDB (with MongoDB compatibility) is a fully managed, scalable document database service that supports MongoDB workloads. Applications Manager monitors three types of DocumentDB resources:
- DocumentDB Cluster - Consists of a primary instance and up to 15 read replicas across multiple Availability Zones, backed by a distributed storage system that automatically scales.
- DocumentDB Global Cluster - Spans multiple AWS Regions, enabling low-latency global reads and disaster recovery from Region-wide outages.
- DocumentDB Instance - The compute components within a DocumentDB cluster that run the database engine and manage data processing for read and write operations.
Creating new DocumentDB monitors
To learn how to create new DocumentDB monitors, refer here.
DocumentDB Cluster
Applications Manager's DocumentDB Cluster monitoring tool provides visibility into the performance, CPU utilization, memory usage, replication lag, database operations, network throughput, and storage metrics of your DocumentDB clusters. Monitoring these metrics enables administrators to identify performance bottlenecks, optimize resource allocation, and ensure high availability of their document database workloads.
Monitored parameters
Go to the Monitors Category View by clicking the Monitors tab. Click on the DocDB Cluster instance available under Amazon in the Cloud Apps section. Displayed is the DocDB Cluster bulk configuration view distributed into three tabs:
- Availability tab shows the availability history for the past 24 hours or 30 days.
- Performance tab shows health status and events for the past 24 hours or 30 days.
- List view tab enables you to perform bulk admin configurations.
By clicking a monitor from the list, you will be taken to the Amazon DocumentDB Cluster dashboard which includes the following tabs:
Performance Overview
| Parameter | Description |
|---|
| CLUSTER INFORMATION |
| Cluster Status | The current status of the DocumentDB resource. |
| Endpoint | The endpoint for the primary instance of the cluster. |
| Cluster Reader Endpoint | The reader endpoint for the resource. |
| Cluster Port | The port on which the resource listens. |
| Engine Uptime | The maximum time taken by the DocumentDB resource to run at the time of polling (in minutes). |
| Available MVCC IDs | The average number of Multi-Version Concurrency Control (MVCC) IDs available in the DocumentDB resource at the time of polling. |
| Longest Active GC Runtime | The average duration of the longest active garbage collection operation on the DocumentDB resource between the poll interval (in seconds). |
| CPU UTILIZATION |
| CPU Utilization | The average percentage of CPU used by the DocumentDB resource at the time of polling (in %). |
| BUFFER CACHE HIT RATIO |
| Buffer Cache Hit Ratio | The average percentage of requests served by the buffer cache on the DocumentDB resource between the poll interval (in %). |
| Index Buffer Cache Hit Ratio | The average percentage of index requests served by the buffer cache on the DocumentDB resource between the poll interval (in %). |
| CPU CREDITS |
| CPU Credit Balance | The average number of CPU credits available for the DocumentDB resource instance to burst beyond its base CPU utilization at the time of polling. |
| CPU Credit Usage | The average number of CPU credits consumed by the DocumentDB resource instance at the time of polling. |
| CPU SURPLUS CREDIT BALANCE & CHARGES |
| CPU Surplus Credit Balance | The average number of surplus CPU credits spent to sustain CPU performance when the CPUCreditBalance value is zero at the time of polling. |
| CPU Surplus Credits Charged | The average number of surplus CPU credits exceeding the maximum number of CPU credits that can be earned in a 24-hour period, and thus attracting an additional charge, measured for the DocumentDB resource between the poll interval. |
| FREE MEMORY |
| Free Memory | The average amount of available random access memory of the DocumentDB resource at the time of polling (in MB). |
| SWAP USAGE |
| Swap Usage | The average amount of swap space used on the DocumentDB resource at the time of polling (in MB). |
| LOW MEMORY OPERATIONS THROTTLED |
| Operations Throttled (Low Memory) | The total number of requests that are throttled due to low available memory on the DocumentDB resource between the poll interval. |
| LOW MEMORY THROTTLING |
| Queue Depth (Low Memory Throttled Requests) | The total queue depth for requests that are throttled due to low available memory on the DocumentDB resource between the poll interval. |
| Max Queue Depth (Low Memory Throttled Requests) | The maximum queue depth for requests that are throttled due to low available memory on the DocumentDB resource between the poll interval. |
| LATENCY |
| Read Latency | The average time taken per disk IO read operation on the DocumentDB resource during the polling interval (in ms). |
| Write Latency | The average time taken per disk IO write operation on the DocumentDB resource during the polling interval (in ms). |
| REPLICATION LAG |
| Replication Lag | The average amount of lag when replicating updates from the primary instance to a replica instance on the DocumentDB resource between the poll interval (in ms). |
| Replica Lag (Max) | The maximum amount of lag between the primary instance and each DocumentDB instance in the cluster between the poll interval (in ms). |
| Replica Lag (Min) | The minimum amount of lag between the primary instance and each DocumentDB instance in the cluster between the poll interval (in ms). |
DB Operations
| Parameter | Description |
|---|
| DATABASE CONNECTIONS |
| Database Connections | The average number of database connections in use on the DocumentDB resource between the poll interval. |
| Database Connections Limit | The maximum database connections limit on the DocumentDB resource between the poll interval. |
| Database Connections Max | The maximum number of open database connections on the DocumentDB resource between the poll interval. |
| DATABASE CURSORS |
| Database Cursors | The average number of cursors open on the DocumentDB resource between the poll interval. |
| Database Cursors Limit | The maximum database cursors limit on the DocumentDB resource between the poll interval. |
| Database Cursors Max | The maximum number of open cursors on the DocumentDB resource between the poll interval. |
| DATABASE CURSORS TIMED OUT |
| Database Cursors Timed Out | The total number of cursors that timed out on the DocumentDB resource between the poll interval. |
| TRANSACTIONS OPEN |
| Transactions Open | The average number of transactions currently open on the DocumentDB resource between the poll interval. |
| Transactions Open Limit | The maximum limit of open transactions on the DocumentDB resource between the poll interval. |
| Transactions Open Max | The maximum number of open transactions on the DocumentDB resource between the poll interval. |
| TRANSACTIONS |
| Transactions Started | The total number of transactions started on the DocumentDB resource between the poll interval. |
| Transactions Committed | The total number of transactions committed on the DocumentDB resource between the poll interval. |
| Transactions Aborted | The total number of transactions aborted on the DocumentDB resource between the poll interval. |
| DOCUMENT OPERATIONS |
| Documents Updated | The total number of documents updated on the DocumentDB resource between the poll interval. |
| Documents Deleted | The total number of documents deleted from the DocumentDB resource between the poll interval. |
| Documents Inserted | The total number of documents inserted into the DocumentDB resource between the poll interval. |
| Documents Returned | The total number of documents returned by queries on the DocumentDB resource between the poll interval. |
| DATABASE OPERATIONS - READ |
| Query Operations | The total number of query operations issued on the DocumentDB resource between the poll interval. |
| Cursor Fetch Operations | The total number of getmore operations issued on the DocumentDB resource between the poll interval. |
| Commands Issued | The total number of commands issued on the DocumentDB resource between the poll interval. |
| DATABASE OPERATIONS - WRITE |
| Insert Operations | The total number of insert operations issued on the DocumentDB resource between the poll interval. |
| Update Operations | The total number of update operations issued on the DocumentDB resource between the poll interval. |
| Delete Operations | The total number of delete operations issued on the DocumentDB resource between the poll interval. |
| DOCUMENTS DELETED BY TTL |
| Documents Deleted by TTL | The total number of documents deleted by a TTL index on the DocumentDB resource between the poll interval. |
Note:DB Operations tab metrics are disabled from data collection by default and mapped under performance polling as DB Operations. To enable data collection, navigate to Settings → Performance Polling, select the Optimize Data Collection tab, choose Amazon DocumentDB Cluster as the monitor type and DB Operations as the metric name, then set the preferred time interval.
Network & Storage
| Parameter | Description |
|---|
| NETWORK THROUGHPUT |
| Inbound Network Throughput | The average incoming (receive) network traffic on the DocumentDB resource between the poll interval (in MB/s). |
| Outbound Network Throughput | The average outgoing (transmit) network traffic on the DocumentDB resource between the poll interval (in MB/s). |
| Network Throughput | The average total network throughput including both received and transmitted traffic by each instance in the DocumentDB resource between the poll interval (in MB/s). |
| STORAGE NETWORK THROUGHPUT |
| Storage Network Received Throughput | The average storage network throughput received by the instance from the storage layer on the DocumentDB resource between the poll interval (in MB/s). |
| Storage Network Transmitted Throughput | The average storage network throughput sent by the instance to the storage layer on the DocumentDB resource between the poll interval (in MB/s). |
| Storage Network Throughput | The average storage network throughput between the storage layer and the instance layer on the DocumentDB resource between the poll interval (in MB/s). |
| DISK THROUGHPUT |
| Disk Read Throughput | The average amount of data read from disk per second on the DocumentDB resource between the poll interval (in MB/s). |
| Disk Write Throughput | The average amount of data written to disk per second on the DocumentDB resource between the poll interval (in MB/s). |
| DISK IO STATISTICS |
| Disk Read | The average number of disk I/O read operations per second on the DocumentDB resource between the poll interval (in operations/s). |
| Disk Write | The average number of disk I/O write operations per second on the DocumentDB resource between the poll interval (in operations/s). |
| VOLUME IO STATISTICS |
| Volume Read | The average number of billed read I/O operations per second from the DocumentDB resource volume between the poll interval (in operations/s). |
| Volume Write | The average number of billed write I/O operations per second to the DocumentDB resource volume between the poll interval (in operations/s). |
| PENDING IO REQUESTS |
| Pending IO Requests | The total number of outstanding I/Os (read/write requests) waiting to access the disk on the DocumentDB resource between the poll interval. |
| USED VOLUME |
| Used Volume | The average amount of storage used by the DocumentDB resource at the time of polling (in MB). |
| FREE LOCAL STORAGE |
| Free Local Storage | The average amount of local storage available on each instance of the DocumentDB resource at the time of polling (in MB). |
| BACKUP STORAGE |
| Backup Storage Billed | The average amount of backup storage billed for the DocumentDB resource between the poll interval (in MB). |
| Backup Storage Used | The average amount of backup storage used to support the point-in-time restore feature of the DocumentDB resource at the time of polling (in MB). |
| Snapshot Storage Used | The average amount of backup storage consumed by all snapshots for the DocumentDB resource at the time of polling (in MB). |
| CHANGE STREAM LOG SIZE |
| Change Stream Log Size | The average amount of storage used by the DocumentDB resource for the change stream log between the poll interval (in MB). |
Note:Network & Storage tab metrics are disabled from data collection by default and mapped under performance polling as Network & Storage. To enable data collection, navigate to Settings → Performance Polling, select the Optimize Data Collection tab, choose Amazon DocumentDB Cluster as the monitor type and Network & Storage as the metric name, then set the preferred time interval.
NVMe Storage
| Parameter | Description |
|---|
| NVME STORAGE CACHE HIT RATIO |
| NVMe Storage Cache Hit Ratio | The average percentage of read requests served from the NVMe storage cache on the DocumentDB resource between the poll interval (in %). |
| FREE NVME STORAGE |
| Free NVMe Storage | The average amount of available NVMe storage space on the DocumentDB resource instance at the time of polling (in MB). |
| NVME IOPS |
| NVMe Storage Read | The average number of read I/O operations per second from the NVMe storage on the DocumentDB resource between the poll interval (in operations/s). |
| NVMe Storage Write | The average number of write I/O operations per second to the NVMe storage on the DocumentDB resource between the poll interval (in operations/s). |
| NVME LATENCY |
| NVMe Storage Read Latency | The average time taken for read operations from the NVMe storage on the DocumentDB resource between the poll interval (in ms). |
| NVMe Storage Write Latency | The average time taken for write operations to the NVMe storage on the DocumentDB resource between the poll interval (in ms). |
| NVME THROUGHPUT |
| NVMe Storage Read Throughput | The average amount of data read per second from the NVMe storage on the DocumentDB resource between the poll interval (in MB/s). |
| NVMe Storage Write Throughput | The average amount of data written per second to the NVMe storage on the DocumentDB resource between the poll interval (in MB/s). |
Note:NVMe Storage tab metrics are disabled from data collection by default and mapped under performance polling as NVMe Storage. To enable data collection, navigate to Settings → Performance Polling, select the Optimize Data Collection tab, choose Amazon DocumentDB Cluster as the monitor type and NVMe Storage as the metric name, then set the preferred time interval.
Configuration
| Parameter | Description |
|---|
| CONFIGURATION |
| Cluster Status | The current status of the DocumentDB resource. |
| Database Engine | The database engine used by the resource. |
| Engine Version | The version of the database engine. |
| Endpoint | The endpoint for the primary instance of the cluster. |
| Cluster Reader Endpoint | The reader endpoint for the resource. |
| Cluster Port | The port on which the resource listens. |
| Master User Name | The master username for the resource. |
| Availability Zone | The availability zones where instances in the cluster can be created. |
| DB Subnet Group | The DB subnet group associated with the resource. |
| Backup Retention Period | The number of days for which automatic DB snapshots are retained (in days). |
| Preferred Backup Window | The daily time range during which automated backups are created. |
| Preferred Maintenance Window | The weekly time range during which system maintenance can occur. |
| Earliest Restorable Time | The earliest point in time to which the database can be restored. |
| Latest Restorable Time | The latest point in time to which the database can be restored. |
| SECURITY CONFIGURATION |
| Deletion Protection | Indicates whether the resource has deletion protection enabled. |
| Storage Encryption | Indicates whether the storage of the resource is encrypted. |
| Multi-AZ | Indicates whether the cluster has instances in multiple Availability Zones. |
| KMS Key ID | The AWS KMS key identifier used for encrypting the resource. |
| VPC Security Groups | The list of VPC security groups that the resource belongs to. |
DocumentDB Global Cluster
Applications Manager's DocumentDB Global Cluster monitoring tool provides visibility into the replication performance between primary and secondary clusters, including replication lag, replicated write I/O, and data transfer rates. Monitoring these metrics enables administrators to ensure cross-region replication health, validate disaster recovery readiness, and optimize global database performance.
Monitored parameters
Go to the Monitors Category View by clicking the Monitors tab. Click on the DocDB Global Cluster instance available under Amazon in the Cloud Apps section. Displayed is the DocDB Global Cluster bulk configuration view distributed into three tabs:
- Availability tab shows the availability history for the past 24 hours or 30 days.
- Performance tab shows health status and events for the past 24 hours or 30 days.
- List view tab enables you to perform bulk admin configurations.
By clicking a monitor from the list, you will be taken to the Amazon DocumentDB Global Cluster dashboard which includes the following tabs:
Performance Overview
| Parameter | Description |
|---|
| CLUSTER INFORMATION |
| Cluster Status | The current status of the DocumentDB global cluster. |
| DB Engine Name | The database engine used by the global cluster. |
| Engine Version | The version of the database engine. |
Primary Cluster Performance
The following table displays the performance data of the primary cluster in relation to each secondary region:
| Parameter | Description |
|---|
| Secondary Region | The AWS Region identifier of the secondary cluster. |
| Secondary Region Name | The display name of the AWS Region where the secondary cluster is located. |
| Cluster Identifier | The identifier of the cluster associated with the replication data. |
| Replication Lag | The average replication lag (in milliseconds) between the primary and secondary clusters between the poll interval (in ms). |
Secondary Cluster Performance
The following table displays the replication data received by the secondary clusters from the primary cluster:
| Parameter | Description |
|---|
| Source Region | The AWS Region identifier of the primary (source) cluster. |
| Source Region Name | The display name of the AWS Region where the primary cluster is located. |
| Cluster Identifier | The identifier of the cluster associated with the replication data. |
| Replicated Write I/O | The rate of replicated write I/O operations per minute transferred from the primary AWS Region to the secondary AWS Region between the poll interval (in ops/min). |
| Data Transmission Rate | The rate of data transferred per minute from the primary AWS Region to the secondary AWS Region between the poll interval (in MB/min). |
Configuration
| Parameter | Description |
|---|
| CONFIGURATION |
| Cluster Status | The current status of the DocumentDB global cluster. |
| Global Cluster ID | The Amazon Resource Name (ARN) of the DocumentDB global cluster. |
| Global Cluster Resource ID | The AWS resource identifier for the global cluster. |
| DB Engine Name | The database engine used by the global cluster. |
| Engine Version | The version of the database engine. |
| SECURITY CONFIGURATION |
| Deletion Protection | Indicates whether the global cluster has deletion protection enabled. |
| Storage Encryption | Indicates whether the global cluster storage is encrypted. |
| Encryption Type | The type of encryption used for the global cluster storage. |
DocumentDB Instance
Applications Manager's DocumentDB Instance monitoring tool provides visibility into the performance, CPU utilization, memory usage, replication lag, database operations, network throughput, storage metrics, and instance-level events. Monitoring these metrics enables administrators to optimize instance performance, identify resource constraints, and troubleshoot issues at the individual instance level.
Monitored parameters
Go to the Monitors Category View by clicking the Monitors tab. Click on the DocDB Instance instance available under Amazon in the Cloud Apps section. Displayed is the DocDB Instance bulk configuration view distributed into three tabs:
- Availability tab shows the availability history for the past 24 hours or 30 days.
- Performance tab shows health status and events for the past 24 hours or 30 days.
- List view tab enables you to perform bulk admin configurations.
By clicking a monitor from the list, you will be taken to the Amazon DocumentDB Instance dashboard which includes the following tabs:
Performance Overview
| Parameter | Description |
|---|
| CLUSTER INFORMATION |
| Instance Status | The current status of the DocumentDB instance. |
| Endpoint | The endpoint for the DocumentDB instance. |
| Port | The port on which the instance listens. |
| Engine Uptime | The maximum time taken by the DocumentDB instance to run at the time of polling (in minutes). |
| Available MVCC IDs | The average number of Multi-Version Concurrency Control (MVCC) IDs available in the DocumentDB instance at the time of polling. |
| Longest Active GC Runtime | The average duration of the longest active garbage collection operation on the DocumentDB instance between the poll interval (in seconds). |
| CPU UTILIZATION |
| CPU Utilization | The average percentage of CPU used by the DocumentDB instance at the time of polling (in %). |
| BUFFER CACHE HIT RATIO |
| Buffer Cache Hit Ratio | The average percentage of requests served by the buffer cache on the DocumentDB instance between the poll interval (in %). |
| Index Buffer Cache Hit Ratio | The average percentage of index requests served by the buffer cache on the DocumentDB instance between the poll interval (in %). |
| CPU CREDITS |
| CPU Credit Balance | The average number of CPU credits available for the DocumentDB instance to burst beyond its base CPU utilization at the time of polling. |
| CPU Credit Usage | The average number of CPU credits consumed by the DocumentDB instance at the time of polling. |
| CPU SURPLUS CREDIT BALANCE & CHARGES |
| CPU Surplus Credit Balance | The average number of surplus CPU credits spent to sustain CPU performance when the CPUCreditBalance value is zero at the time of polling. |
| CPU Surplus Credits Charged | The average number of surplus CPU credits exceeding the maximum number of CPU credits that can be earned in a 24-hour period, and thus attracting an additional charge, measured for the DocumentDB instance between the poll interval. |
| FREE MEMORY |
| Free Memory | The average amount of available random access memory of the DocumentDB instance at the time of polling (in MB). |
| SWAP USAGE |
| Swap Usage | The average amount of swap space used on the DocumentDB instance at the time of polling (in MB). |
| LOW MEMORY OPERATIONS THROTTLED |
| Operations Throttled (Low Memory) | The total number of requests that are throttled due to low available memory on the DocumentDB instance between the poll interval. |
| Operations Timed Out (Low Memory) | The total number of requests that timed out due to low available memory on the DocumentDB instance between the poll interval. |
| LOW MEMORY THROTTLING |
| Queue Depth (Low Memory Throttled Requests) | The total queue depth for requests that are throttled due to low available memory on the DocumentDB instance between the poll interval. |
| Max Queue Depth (Low Memory Throttled Requests) | The maximum queue depth for requests that are throttled due to low available memory on the DocumentDB instance between the poll interval. |
| LATENCY |
| Read Latency | The average time taken per disk IO read operation on the DocumentDB instance during the polling interval (in ms). |
| Write Latency | The average time taken per disk IO write operation on the DocumentDB instance during the polling interval (in ms). |
| REPLICATION LAG |
| Replication Lag | The average amount of lag when replicating updates from the primary instance to a replica instance on the DocumentDB resource between the poll interval (in ms). |
DB Operations
| Parameter | Description |
|---|
| DATABASE CONNECTIONS |
| Database Connections | The average number of database connections in use on the DocumentDB instance between the poll interval. |
| Database Connections Limit | The maximum database connections limit on the DocumentDB instance between the poll interval. |
| Database Connections Max | The maximum number of open database connections on the DocumentDB instance between the poll interval. |
| DATABASE CURSORS |
| Database Cursors | The average number of cursors open on the DocumentDB instance between the poll interval. |
| Database Cursors Limit | The maximum database cursors limit on the DocumentDB instance between the poll interval. |
| Database Cursors Max | The maximum number of open cursors on the DocumentDB instance between the poll interval. |
| DATABASE CURSORS TIMED OUT |
| Database Cursors Timed Out | The total number of cursors that timed out on the DocumentDB instance between the poll interval. |
| TRANSACTIONS OPEN |
| Transactions Open | The average number of transactions currently open on the DocumentDB instance between the poll interval. |
| Transactions Open Limit | The maximum limit of open transactions on the DocumentDB instance between the poll interval. |
| Transactions Open Max | The maximum number of open transactions on the DocumentDB instance between the poll interval. |
| TRANSACTIONS |
| Transactions Started | The total number of transactions started on the DocumentDB instance between the poll interval. |
| Transactions Committed | The total number of transactions committed on the DocumentDB instance between the poll interval. |
| Transactions Aborted | The total number of transactions aborted on the DocumentDB instance between the poll interval. |
| DOCUMENT OPERATIONS |
| Documents Updated | The total number of documents updated on the DocumentDB instance between the poll interval. |
| Documents Deleted | The total number of documents deleted from the DocumentDB instance between the poll interval. |
| Documents Inserted | The total number of documents inserted into the DocumentDB instance between the poll interval. |
| Documents Returned | The total number of documents returned by queries on the DocumentDB instance between the poll interval. |
| DATABASE OPERATIONS - READ |
| Query Operations | The total number of query operations issued on the DocumentDB instance between the poll interval. |
| Cursor Fetch Operations | The total number of getmore operations issued on the DocumentDB instance between the poll interval. |
| Commands Issued | The total number of commands issued on the DocumentDB instance between the poll interval. |
| DATABASE OPERATIONS - WRITE |
| Insert Operations | The total number of insert operations issued on the DocumentDB instance between the poll interval. |
| Update Operations | The total number of update operations issued on the DocumentDB instance between the poll interval. |
| Delete Operations | The total number of delete operations issued on the DocumentDB instance between the poll interval. |
| DOCUMENTS DELETED BY TTL |
| Documents Deleted by TTL | The total number of documents deleted by a TTL index on the DocumentDB instance between the poll interval. |
Note:DB Operations tab metrics are disabled from data collection by default and mapped under performance polling as DB Operations. To enable data collection, navigate to Settings → Performance Polling, select the Optimize Data Collection tab, choose Amazon DocumentDB Instance as the monitor type and DB Operations as the metric name, then set the preferred time interval.
Network & Storage
| Parameter | Description |
|---|
| NETWORK THROUGHPUT |
| Inbound Network Throughput | The average incoming (receive) network traffic on the DocumentDB instance between the poll interval (in MB/s). |
| Outbound Network Throughput | The average outgoing (transmit) network traffic on the DocumentDB instance between the poll interval (in MB/s). |
| Network Throughput | The average total network throughput including both received and transmitted traffic on the DocumentDB instance between the poll interval (in MB/s). |
| STORAGE NETWORK THROUGHPUT |
| Storage Network Received Throughput | The average storage network throughput received by the DocumentDB instance from the storage layer between the poll interval (in MB/s). |
| Storage Network Transmitted Throughput | The average storage network throughput sent by the DocumentDB instance to the storage layer between the poll interval (in MB/s). |
| Storage Network Throughput | The average storage network throughput between the storage layer and the DocumentDB instance between the poll interval (in MB/s). |
| DISK IO STATISTICS |
| Disk Read | The average number of disk I/O read operations per second on the DocumentDB instance between the poll interval (in operations/s). |
| Disk Write | The average number of disk I/O write operations per second on the DocumentDB instance between the poll interval (in operations/s). |
| PENDING IO REQUESTS |
| Pending IO Requests | The total number of outstanding I/Os (read/write requests) waiting to access the disk on the DocumentDB instance between the poll interval. |
| FREE LOCAL STORAGE |
| Free Local Storage | The average amount of local storage available on the DocumentDB instance at the time of polling (in MB). |
| CHANGE STREAM LOG SIZE |
| Change Stream Log Size | The average amount of storage used by the DocumentDB instance for the change stream log between the poll interval (in MB). |
Note:Network & Storage tab metrics are disabled from data collection by default and mapped under performance polling as Network & Storage. To enable data collection, navigate to Settings → Performance Polling, select the Optimize Data Collection tab, choose Amazon DocumentDB Instance as the monitor type and Network & Storage as the metric name, then set the preferred time interval.
NVMe Storage
| Parameter | Description |
|---|
| NVME STORAGE CACHE HIT RATIO |
| NVMe Storage Cache Hit Ratio | The average percentage of read requests served from the NVMe storage cache on the DocumentDB instance between the poll interval (in %). |
| FREE NVME STORAGE |
| Free NVMe Storage | The average amount of available NVMe storage space on the DocumentDB instance at the time of polling (in MB). |
| NVME IOPS |
| NVMe Storage Read | The average number of read I/O operations per second from the NVMe storage on the DocumentDB instance between the poll interval (in operations/s). |
| NVMe Storage Write | The average number of write I/O operations per second to the NVMe storage on the DocumentDB instance between the poll interval (in operations/s). |
| NVME LATENCY |
| NVMe Storage Read Latency | The average time taken for read operations from the NVMe storage on the DocumentDB instance between the poll interval (in ms). |
| NVMe Storage Write Latency | The average time taken for write operations to the NVMe storage on the DocumentDB instance between the poll interval (in ms). |
| NVME THROUGHPUT |
| NVMe Storage Read Throughput | The average amount of data read per second from the NVMe storage on the DocumentDB instance between the poll interval (in MB/s). |
| NVMe Storage Write Throughput | The average amount of data written per second to the NVMe storage on the DocumentDB instance between the poll interval (in MB/s). |
Note:NVMe Storage tab metrics are disabled from data collection by default and mapped under performance polling as NVMe Storage. To enable data collection, navigate to Settings → Performance Polling, select the Optimize Data Collection tab, choose Amazon DocumentDB Instance as the monitor type and NVMe Storage as the metric name, then set the preferred time interval.
Configuration
| Parameter | Description |
|---|
| CONFIGURATION |
| Instance Status | The current status of the DocumentDB instance. |
| DB Engine Name | The database engine used by the instance. |
| Engine Version | The version of the database engine. |
| Instance Class | The instance class of the DocumentDB instance. |
| Endpoint | The endpoint for the DocumentDB instance. |
| Port | The port on which the instance listens. |
| Master User Name | The master username for the instance. |
| Availability Zone | The Availability Zone in which the instance is deployed. |
| Promotion Tier | The failover priority of the instance within the cluster. |
| Backup Retention Period | The number of days for which automatic DB snapshots are retained (in days). |
| Preferred Backup Window | The daily time range during which automated backups are created. |
| Preferred Maintenance Window | The weekly time range during which system maintenance can occur. |
| Latest Restorable Time | The latest point in time to which the database can be restored. |
| NETWORK CONFIGURATION |
| DB Subnet Group Name | The name of the DB subnet group associated with the instance. |
| DB Subnet Group Status | The status of the DB subnet group. |
| Multi-AZ | Indicates whether the instance supports Multi-AZ deployment. |
| VPC Security Groups | The list of VPC security groups that the instance belongs to. |
| SECURITY CONFIGURATION |
| Storage Encryption | Indicates whether the storage of the instance is encrypted. |
| KMS Key ID | The AWS KMS key identifier used for encrypting the instance. |
Instance Events
The Instance Events tab displays recent events associated with the DocumentDB instance. These events provide information about changes in the instance state, maintenance activities, and other operational notifications.
| Parameter | Description |
|---|
| Creation Time | The date and time when the event occurred. |
| Category | The category of the event (e.g., maintenance, notification). |
| Type | The type of the event source. |
| Event Source | The identifier of the source that generated the event. |
| Message | The detailed message describing the event. |
