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TencentDB for MongoDB

Billing Overview

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Last updated: 2026-04-17 15:54:33

Billing Mode

TencentDB for MongoDB supports pay-as-you-go billing mode.

Pay-as-you-go

Pay-as-you-go is a postpaid billing mode. We recommend you choose the pay-as-you-go billing mode if your business may fluctuate greatly and unpredictably or your resource usage tends to be temporary or abrupt. When you purchase a TencentDB for MongoDB instance, the hardware fees of one hour will be frozen in your Tencent Cloud account and charged on the hour, with the billable usage duration accurate down to the second. In this mode, you only need to pay for the actual usage of TencentDB for MongoDB with no upfront payment required.

Billing Mode

Comparison Item
Pay-as-You-Go
Billing method
Postpaid: Billed hourly. Pay after usage.
Settlement cycle: Upon activation, one hour's fee will be frozen in your cloud account. At the top of every hour (UTC+8), the fee for the previous hour will be settled automatically.
Product Pricing: Tiered pricing based on usage duration, with hourly rates decreasing tier by tier. For specific pricing, see Product Pricing.
If the duration is greater than 0 days and less than or equal to 4 days, the first-tier pay-as-you-go pricing applies.
If the duration is greater than 4 days and less than or equal to 15 days, the second-tier pay-as-you-go pricing applies.
If the duration is greater than 15 days, the third-tier pay-as-you-go pricing applies.
Note:
After instance scale-out, scale-in, or isolation, the pricing calculation restarts from Tier 1.
The price of pay-as-you-go tier 3 is basically the same as that of yearly/monthly subscription.
Key rules
Termination: Instances can be terminated at any time, with fees settled per second based on usage.
Payment overdue: When the account balance is insufficient, instances will be released after the grace/retention period is exceeded. For specific overdue handling mechanisms, see Payment Overdue Policy.
Key strength
Highly flexible, with on-demand resource purchase and release to adapt to business fluctuations.
Applicable Scenario
Business with significant traffic fluctuation and temporary needs (such as development and testing and promotional campaigns).
Billing Policy

Billing Items

Description
Billable Item
Billing is based on instance specifications (CPU and memory configurations) and storage capacity, encompassing the consolidated costs of the following core resources.
Core component: Mongod node's CPU and memory resources, which handle core features such as data storage, query processing, and transaction execution.
Extension component (for sharded clusters only): Mongos routing node's CPU and memory resources, which handle cross-shard request scheduling, load balancing, and query optimization.
Storage resources refer to the dedicated disk capacity used by Mongod nodes for persistent storage of documents, indexes, and metadata. Due to variations in infrastructure costs (such as the power supply, network bandwidth, and data center Ops) and local market policies across different regions, the storage unit price is independently set for each region. For price details, see Product Pricing.
Pricing Description
Tiered pricing: Node prices are reduced as node capacity increases. For specific pricing, see Product Pricing.
Architectural differences: Replica sets and sharded clusters adopt different specification tiers and pricing standards due to variations in performance, features, and complexity.
Replica sets are divided into 4 specification tiers: less than 128 GB, equal to 128 GB, equal to 240 GB, and equal to 512 GB.
Sharded clusters are divided into 2 specification tiers: less than 512 GB and equal to 512 GB.
Different regions implement independent pricing tables based on infrastructure cost variations.
Free tier (Mongos nodes): Mongos routing nodes provide a free tier (3 nodes for single-AZ, 6 nodes for multi-AZ), with additional nodes charged separately.
Calculation Formula
For purchasing replica set instances or sharded cluster instances, see Billing Formula for fee calculation.

Cost Estimation

Determine the cluster type (replica set or sharded cluster) and billing mode based on business needs. Refer to the official pricing in the target region to obtain the unit prices of computing and storage resources. Finally, calculate the fees based on node specifications, node quantity, and storage capacity, and derive the final budget by incorporating discount factors such as the Mongos free tier.

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