# Neo4j + ClickHouse

> Replicate data from Neo4j to ClickHouse incrementally and securely. Real-time synchronization with schema drift detection and comprehensive logs.

Source: https://www.erathos.com/en/pipelines/neo4j-clickhouse
Em português: https://www.erathos.com/pipelines/neo4j-clickhouse

Neo4j is a graph database management system designed to store and query highly connected data, efficiently representing relationships between entities. ClickHouse, on the other hand, is a serverless Big Data solution developed by Google, providing robust large-scale data storage and analytics capabilities.

With Erathos, you can integrate Neo4j data into ClickHouse in just a few minutes. Our platform handles the entire data movement process to your analytical environment, allowing you to blend your data with other sources in your Data Warehouse. This way, your time is focused on what actually drives value — extracting valuable insights and making data-driven decisions.

### Which Neo4j data does Erathos sync with ClickHouse?

The integration automatically syncs key Neo4j objects:

- **Selected tables** — incremental replication of any configured table
- **Schema drift** — new columns are automatically detected and added to the destination
- **Primary keys and timestamps** — used for efficient incremental syncs
- **Historical data** — full initial load followed by incremental updates

### Why sync Neo4j with ClickHouse?

In ClickHouse, you can run OLAP queries on your Neo4j data in milliseconds, which is ideal for high-concurrency dashboards and high-volume time-series data.

### How it works

Erathos connects to Neo4j via official APIs and syncs your data incrementally — only new or updated records are processed in each run, keeping your pipelines fast and ClickHouse costs predictable. You choose the sync frequency (ranging from every 5 minutes to daily), the objects to sync, and the destination dataset. Every run is logged with full observability: execution time, rows processed, contextualized errors, and instant alerts via Slack or email if anything goes wrong.

## Data in your data warehouse in minutes

### Ready-to-use Neo4j connector

Replicate tables from Neo4j to ClickHouse with incremental sync and automatic schema drift detection — without breaking pipelines when the schema changes.

### Full control over your Neo4j pipelines

Configure frequency and sync mode on a per-table basis. Data lands in ClickHouse optimized for OLAP queries, delivering millisecond-level analytics even across millions of rows.

### End-to-end observability

No more finding out about Neo4j failures when the business team complains. Every run is logged with runtime, processed rows, and error context. Automatic alerts via Slack, Discord, or email as soon as something goes off track — keeping replication up to date without impacting the transactional database.

## Centralizing Neo4j data into ClickHouse has never been easier

Erathos is a data ingestion platform for teams that need to replicate operational databases for analytics. With the Neo4j connector, you can incrementally sync transactional tables and records to ClickHouse — complete with schema drift detection and full execution logs.

## FAQ

### What is Erathos and how can it help my company?

Erathos is a data ingestion platform built for reliability, transparency, and control. We help data teams connect tools like Neo4j to their data warehouse — with full observability over every run, zero maintenance, and without the opacity of traditional market tools.

### How does Erathos sync data from Neo4j to Clickhouse?

Erathos uses incremental replication to sync tables from Neo4j to ClickHouse. Schema drift is automatically detected — if a column is added or modified in Neo4j, the pipeline adapts without manual intervention.

### How often does Erathos sync data from Neo4j to Clickhouse?

You can configure the sync frequency from every 5 minutes to daily, at the table level. Erathos uses incremental sync—only new or updated records are processed in each run, keeping your Neo4j pipeline efficient and ClickHouse costs predictable.

### What happens if a Neo4j sync fails?

Erathos automatically detects failures and sends alerts to your email, Slack, or Discord with full context — not just "job failed." Smart retries handle transient errors, and every run is logged with runtime, rows processed, and error context so your team can debug in minutes, not hours.

### Is there a free trial for the Neo4j connector?

Yes. Every Erathos connector includes a 14-day free trial. Connect Neo4j to ClickHouse and start syncing immediately — no credit card required.