> ## Documentation Index
> Fetch the complete documentation index at: https://private-7c7dfe99-detect-table-modification.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ClickPipes for PostgreSQL CDC

> Overview of billing for PostgreSQL CDC ClickPipes

This section outlines the pricing model for the Postgres Change Data Capture (CDC)
connector in ClickPipes. In designing this model, the goal was to keep pricing
highly competitive while staying true to our core vision:

> Making it seamless and
> affordable for customers to move data from Postgres to ClickHouse for
> real-time analytics.

The connector is over **5x more cost-effective** than external
ETL tools and similar features in other database platforms.

<Note>
  Pricing started being metered in monthly bills on **September 1st, 2025**
  for all customers (both existing and new) using Postgres CDC ClickPipes.
</Note>

<h2 id="pricing-dimensions">
  Pricing dimensions
</h2>

There are two main dimensions to pricing:

1. **Ingested Data**: The raw, uncompressed bytes coming from Postgres and
   ingested into ClickHouse.
2. **Compute**: The compute units provisioned per service manage multiple
   Postgres CDC ClickPipes and are separate from the compute units used by the
   ClickHouse Cloud service. This additional compute is dedicated specifically
   to Postgres CDC ClickPipes. Compute is billed at the service level, not per
   individual pipe. Each compute unit includes 2 vCPUs and 8 GB of RAM.

<h3 id="ingested-data">
  Ingested data
</h3>

The Postgres CDC connector operates in two main phases:

* **Initial load / resync**: This captures a full snapshot of Postgres tables
  and occurs when a pipe is first created or re-synced.
* **Continuous Replication (CDC)**: Ongoing replication of changes—such as inserts,
  updates, deletes, and schema changes—from Postgres to ClickHouse.

In most use cases, continuous replication accounts for over 90% of a ClickPipe
life cycle. Because initial loads involve transferring a large volume of data all
at once, we offer a lower rate for that phase.

| Phase                            | Cost          |
| -------------------------------- | ------------- |
| **Initial load / resync**        | \$0.10 per GB |
| **Continuous Replication (CDC)** | \$0.20 per GB |

<h3 id="compute">
  Compute
</h3>

This dimension covers the compute units provisioned per service just for Postgres
ClickPipes. Compute is shared across all Postgres pipes within a service. **It
is provisioned when the first Postgres pipe is created and deallocated when no
Postgres CDC pipes remain**. The amount of compute provisioned depends on your
organization's tier:

| Tier                         | Cost                                           |
| ---------------------------- | ---------------------------------------------- |
| **Basic Tier**               | 0.5 compute unit per service — \$0.10 per hour |
| **Scale or Enterprise Tier** | 1 compute unit per service — \$0.20 per hour   |

<h3 id="example">
  Example
</h3>

Let's say your service is in Scale tier and has the following setup:

* 2 Postgres ClickPipes running continuous replication
* Each pipe ingests 500 GB of data changes (CDC) per month
* When the first pipe is kicked off, the service provisions **1 compute unit under the Scale Tier** for Postgres CDC

<h4 id="cost-breakdown">
  Monthly cost breakdown
</h4>

**Ingested Data (CDC)**:

$2 \text{ pipes} \times 500 \text{ GB} = 1,000 \text{ GB per month}$

$$1,000 \text{ GB} \times \$0.20/\text{GB} = \$200$$

**Compute**:

$$1 \text{ compute unit} \times \$0.20/\text{hr} \times 730 \text{ hours (approximate month)} = \$146$$

<Note>
  Compute is shared across both pipes
</Note>

**Total Monthly Cost**:

$$\$200 \text{ (ingest)} + \$146 \text{ (compute)} = \$346$$

<h2 id="faq-postgres-cdc-clickpipe">
  FAQ for Postgres CDC ClickPipes
</h2>

<Accordion title="Is the ingested data measured in pricing based on compressed or uncompressed size?">
  The ingested data is measured as *uncompressed data* coming from Postgres—both
  during the initial load and CDC (via the replication slot). Postgres doesn't
  compress data during transit by default, and ClickPipe processes the raw,
  uncompressed bytes.
</Accordion>

<Accordion title="When will Postgres CDC pricing start appearing on my bills?">
  Postgres CDC ClickPipes pricing began appearing on monthly bills starting
  **September 1st, 2025**, for all customers (both existing and new).
</Accordion>

<Accordion title="Will I be charged if I pause my pipes?">
  No data ingestion charges apply while a pipe is paused, since no data is moved.
  However, compute charges still apply—either 0.5 or 1 compute unit—based on your
  organization's tier. This is a fixed service-level cost and applies across all
  pipes within that service.
</Accordion>

<Accordion title="How can I estimate my pricing?">
  The Overview page in ClickPipes provides metrics for both initial load/resync and
  CDC data volumes. You can estimate your Postgres CDC costs using these metrics
  in conjunction with the ClickPipes pricing.
</Accordion>

<Accordion title="Can I scale the compute allocated for Postgres CDC in my service?">
  By default, compute scaling isn't user-configurable. The provisioned resources
  are optimized to handle most customer workloads optimally. If your use case
  requires more or less compute, please open a support ticket so we can evaluate
  your request.
</Accordion>

<Accordion title="What is the pricing granularity?">
  * **Compute**: Billed per hour. Partial hours are rounded up to the next hour.
  * **Ingested Data**: Measured and billed per gigabyte (GB) of uncompressed data.
</Accordion>

<Accordion title="Can I use my ClickHouse Cloud credits for Postgres CDC via ClickPipes?">
  Yes. ClickPipes pricing is part of the unified ClickHouse Cloud pricing. Any
  platform credits you have will automatically apply to ClickPipes usage as well.
</Accordion>

<Accordion title="How much additional cost should I expect from Postgres CDC ClickPipes in my existing monthly ClickHouse Cloud spend?">
  The cost varies based on your use case, data volume, and organization tier.
  That said, most existing customers see an increase of **0–15%** relative to their
  existing monthly ClickHouse Cloud spend post trial. Actual costs may vary
  depending on your workload—some workloads involve high data volumes with
  lesser processing, while others require more processing with less data.
</Accordion>