Billing Formula
Last updated:2025-05-12 15:15:00
TencentDB for MongoDB generally consists of 3 or more nodes, with each node comprising 2 components: computing (with specified specifications) and storage (with a certain capacity of cloud disk).
Replica Set
Billing Formula
Instance fee = Computing fee + Storage fee = (Memory price for a single Mongod node x Memory of a single Mongod node + Storage price for a single Mongod node x Capacity of a single Mongod node) x (Number of primary/secondary nodes + Number of read-only nodes) x Billing duration
Example
When you purchase a replica set instance in the Guangzhou region, the detailed fee calculation is shown in the table below.
Note:
The following price cases are for reference only. Actual prices may vary by factors such as regions, promotion, and policies. See the official website for the latest price.
Billing Item | Purchase Details | Unit Price (USD/GB/Hour) | Calculation Formula |
Region | Guangzhou | - | Instance fee = Computing fee + Storage fee = (Memory price for a single Mongod node x Memory of a single Mongod node + Storage price for a single Mongod node x Capacity of a single Mongod node) x (Number of primary/secondary nodes + Number of read-only nodes) x Billing duration = (0.01521164 x 4 + 0.000138857 x 100) x (3 + 1) x 96 = 28.69718784 USD |
| Instance type | Replica set instance | - |
| Billing duration | 4 days | - |
| Mongod specifications | 2 cores and 4 GB | 0.01521164 |
| Mongod disk capacity | 100 GB | 0.000138857 |
| Number of primary/secondary nodes | 3 nodes (1 primary node and 2 secondary nodes) | - |
| Number of read-only nodes | 1 | - |
Sharded Cluster
For a sharded cluster, Mongos will have the default specifications once the Mongod specifications are configured. For example, if Mongod is configured with 2 cores and 4 GB, the configuration for Mongos is 1 core and 2 GB by default. For instances deployed in a single AZ, default specifications of Mongos include 3 free nodes; whereas for instances deployed across multiple AZs, default specifications of Mongos include 6 free nodes. Increasing Mongos quantity or upgrading the computing specifications of Mongos will incur fees.
No Fees Incurred by Mongos When the Default Configuration Is Used
Calculation Formula
Instance fee = Computing fee + Storage fee = (Memory price for a single Mongod node x Memory of a single Mongod node + Storage price for a single Mongod node x Capacity of a single Mongod node) x Number of Mongod shards x (Number of primary/secondary nodes per shard + Number of read-only nodes) x Billing duration
The default configuration provides 3 free Mongos nodes for single-AZ deployment and 6 free Mongos nodes for multi-AZ deployment.
Example
When you purchase a single-AZ sharded cluster instance in the Guangzhou region, if the default configuration for Mongos is kept, the detailed fee calculation is shown in the table below.
Note:
The following price cases are for reference only. Actual prices may vary by factors such as regions, promotion, and policies. See the official website for the latest price.
Billing Item | Purchase Details | Unit Price (USD/GB/Hour) | Calculation Formula |
Region | Guangzhou | - | Instance fee = Computing fee + Storage fee = (Memory price for a single Mongod node x Memory of a single Mongod node + Storage price for a single Mongod node x Capacity of a single Mongod node) x Number of Mongod shards x (Number of primary/secondary nodes per shard + Number of read-only nodes) x Billing duration = (0.01521143 x 4 + 0.00013889 x 100) x 2 x (3 + 1) x 96 = 57.39626496 USD |
| Instance type | Sharded cluster | - |
| Billing duration | 4 days (96 hours) | - |
| Mongod specifications | 2 cores and 4 GB | 0.01521143 |
| Mongod disk capacity | 100 GB | 0.00013889 |
| Mongos specifications | Default specifications: 1 core and 2 GB (no fees incurred when the default configuration is used) | - |
| Number of Mongod shards | 2 | - |
| Number of primary/secondary nodes per shard | 3 nodes (1 primary node and 2 secondary nodes) | - |
| Number of read-only nodes | 1 | - |
| Mongos quantity | Default quantity: 3 | - |
Upgrading the Mongos Specifications and Increasing the Quantity
Billing Formula
Instance fee = Computing fee + Storage fee = (Memory price for a single Mongod node x Memory of a single Mongod node + Storage price for a single Mongod node x Disk capacity of a single Mongod node) x Number of Mongod shards x (Number of primary/secondary nodes per shard + Number of read-only nodes) x Billing duration + (Memory price for a single Mongos node x Memory of a single Mongos node x Total Mongos quantity - Price for free Mongos instances) x Billing duration
The price for free Mongos instances refers to default specifications of Mongos after the Mongod is configured. The default specifications provide 3 free instances for single-AZ deployment and 6 free instances for multi-AZ deployment.
Mongod Specifications | Default Specifications of Mongos |
2 cores and 4 GB | 1 core and 2 GB |
4 cores and 8 GB | 2 cores and 4 GB |
6 cores and 16 GB | 4 cores and 8 GB |
12 cores and 32 GB | 8 cores and 16 GB |
24 cores and 64 GB | 8 cores and 16 GB |
24 cores and 128 GB | 8 cores and 16 GB |
32 cores and 240 GB | 8 cores and 16 GB |
48 cores and 512 GB | 8 cores and 16 GB |
Example
When you purchase a sharded cluster instance in the same AZ in the Guangzhou region, the configuration is as follows: The Mongod specifications are 2 cores and 4 GB; the Mongos configuration is upgraded to 2 cores and 4 GB; the number of Mongod shards is 2, with each shard having 3 nodes (1 primary node and 2 secondary nodes). The Mongos quantity increased to 5, meaning adding 2 Mongos nodes. The disk capacity is 100 GB. The detailed fee calculation is shown in the table below.
Note:
The following price cases are for reference only. Actual prices may vary by factors such as regions, promotion, and policies. See the official website for the latest price.
Billing Item | Purchase Details | Unit Price (USD/GB/Hour) | Calculation Formula |
Region | Guangzhou | - | Instance fee = Computing fee + Storage fee = (Memory price for a single Mongod node x Memory of a single Mongod node + Storage price for a single Mongod node x Disk capacity of a single Mongod node) x Number of Mongod shards x (Number of primary/secondary nodes per shard + Number of read-only nodes) x Billing duration + (Memory price for a single Mongos node x Memory of a single Mongos node x Total Mongos quantity - Price for free Mongos instances) x Billing duration = (0.01521143 x 4 + 0.00013889 x 100) x 2 x (3 + 1) x 96 + (0.01521143 x 4 x 5 - 0.01521143 x 2 x 3) x 96 = 79.84042688 USD |
| Instance type | Sharded cluster | - |
| Billing duration | 4 days | - |
| Mongod specifications | 2 cores and 4 GB | 0.01521143 |
| Mongod disk capacity | 100 GB | 0.00013889 |
| Mongos specifications | Upgraded specifications: 2 cores and 4 GB. The default specifications are 1 core 2 GB. The default specifications provide 3 free instances for single-AZ deployment. | 0.01521143 |
| Number of Mongod shards | 2 | - |
| Number of primary/secondary nodes per shard | 3 nodes (1 primary node and 2 secondary nodes) | - |
| Number of read-only nodes | 1 | - |
| Mongos quantity | Default quantity: 3; additional quantity: 2. | - |
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