These are the main options for a ClickHouse® integration NATS pipeline:

1. Tinybird
2. Self-managed ClickHouse® (NATS table engine)
3. Custom consumer or ETL service

NATS is a lightweight messaging system built for low latency and simplicity; JetStream adds persistence and replay. Connecting NATS messages to ClickHouse® gives you analytical queries and real-time dashboards over event data. A ClickHouse® integration NATS setup lets you get NATS data into ClickHouse® for real-time analytics and reporting.

Below we outline the three ways to implement ClickHouse® integration NATS, then add context on NATS, ClickHouse®, and how to choose.

Three ways to implement ClickHouse® integration NATS

This section is the core: the three options to connect NATS to ClickHouse®, in order.

Tinybird has no native NATS connector; your application (or a small bridge service) consumes messages from NATS (core or JetStream) and sends them to Tinybird via the Events API (HTTP). Tinybird stores events in ClickHouse®-backed data sources and you publish Pipes as REST APIs. No NATS engine to run or tune.

Self-managed ClickHouse® can use the NATS table engine (ENGINE = NATS): you set nats_url, nats_subjects, nats_format (e.g. JSONEachRow), and for JetStream optionally nats_stream and nats_consumer. A materialized view copies from this engine table into a MergeTree table. Native and direct, but you operate and tune ClickHouse® yourself.

Custom consumer or ETL: a dedicated service consumes from NATS and writes into ClickHouse® via HTTP insert or the native protocol (or forwards to Tinybird Events API). You build and operate the consumer; useful when you need custom routing or transformation before load.

Looking for a ClickHouse® integration NATS with minimal ops and instant APIs?

Tinybird gives you managed ClickHouse® and one-click API publishing from SQL. Your app consumes NATS and posts to the Events API; Tinybird handles storage, scaling, and APIs—no NATS engine or custom ETL to run.

1. Tinybird: Events API from your app that consumes NATS

Tinybird is a real-time data platform on ClickHouse®. For ClickHouse® integration NATS you keep NATS as the message bus; a producer-side or bridge component consumes from NATS (subjects or JetStream) and pushes events to Tinybird’s Events API (HTTP, NDJSON). Data lands in Tinybird’s ClickHouse®-backed data sources; you define Pipes (SQL) and publish them as REST endpoints.

No NATS table engine, no ClickHouse® cluster to run. You own only the connect NATS to ClickHouse® path in your app (e.g. a small service that subscribes to subjects and POSTs to Tinybird). Real-time data ingestion and real-time dashboards are handled by Tinybird.

When Tinybird fits: you want getting NATS data into ClickHouse® without operating the NATS engine or a heavy ETL; you need APIs and dashboards from the same data; you prefer a NATS to ClickHouse® pipeline that is mostly “app + Tinybird.”

2. Self-managed ClickHouse® (NATS table engine)

ClickHouse® (self-managed) supports a NATS table engine. You create a table with ENGINE = NATS and settings such as nats_url, nats_subjects, nats_format (e.g. JSONEachRow), and optional credentials and queue group. For JetStream you can set nats_stream and nats_consumer to use a durable pull consumer. A materialized view copies from this engine table into a MergeTree table for persistent storage.

Messages are consumed directly by ClickHouse®; ingestion and query workload share the same cluster. You tune nats_num_consumers, nats_flush_interval_ms, and parts management. Error handling can use nats_handle_error_mode (e.g. stream). This is the native NATS ClickHouse® integration when you run ClickHouse® yourself.

When it fits: you already operate ClickHouse® and NATS and want a NATS to ClickHouse® path with no extra services; you have capacity to tune and monitor the engine.

3. Custom consumer or ETL service

A custom consumer or ETL job reads from NATS (core or JetStream via a client library) and writes into ClickHouse® (HTTP insert, native protocol) or into Tinybird (Events API). You control format, batching, retries, and schema mapping. Useful when you need custom logic, multi-destination routing, or integration with systems that don’t support the NATS engine.

When it fits: you need a ClickHouse® integration NATS with custom transformation or routing, or you already have an ETL framework and prefer to keep the connect NATS to ClickHouse® logic in your own code.

What is NATS?

Understanding NATS helps you plan a ClickHouse® integration NATS setup and choose the right path.

NATS core and JetStream

NATS is a lightweight, high-performance messaging system: clients publish and subscribe to subjects (topic-like); messages are delivered with low latency. NATS core is stateless pub/sub; JetStream adds persistent storage, replay, and at-least-once delivery. Many teams use NATS for service-to-service messaging, event distribution, and streaming with simpler operations than Kafka.

For a NATS to ClickHouse® pipeline, messages on subjects (or in JetStream streams) must be consumed and written into ClickHouse®—either by the NATS engine inside ClickHouse®, by your app plus Tinybird Events API, or by a custom consumer.

Why NATS and ClickHouse® together

NATS excels at low-latency messaging and simplicity; ClickHouse® excels at analytical queries over large volumes. A ClickHouse® integration NATS lets you set up ClickHouse® integration NATS so that event or log data in NATS becomes queryable in ClickHouse® for reporting, streaming data analytics, and low latency APIs. You keep NATS for messaging and add ClickHouse® as the analytical sink.

Why use ClickHouse® for message and event analytics?

A NATS to ClickHouse® pipeline only makes sense if ClickHouse® is the right analytical store. It is, for high-volume event and log data.

ClickHouse® strengths for event streams

ClickHouse® is a columnar OLAP database built for analytical queries. Its merge-tree design and vectorized execution support high write throughput and sub-second queries on billions of rows—ideal when messages stream in continuously and you want to query or aggregate them in real time.

Real-time data ingestion into ClickHouse® scales to millions of events per second while keeping queries fast. That’s why getting NATS data into ClickHouse® is a common pattern for operational metrics, event analytics, and dashboards.

When a NATS ClickHouse® connector or integration is needed

Teams look for a NATS ClickHouse® connector or ClickHouse® integration NATS when they already use NATS and want a single analytical store and optional APIs. The “connector” may be the native engine, an app posting to Tinybird, or a custom consumer—depending on who runs the stack and whether you need managed APIs.

What does a ClickHouse® integration NATS pipeline look like?

A clear picture of the ClickHouse® integration NATS flow helps you choose among the three options and plan your NATS to ClickHouse® setup.

The three layers: broker, connector, store

A ClickHouse® integration NATS pipeline has: the message source (NATS subjects or JetStream streams), a connector or ingestion path that consumes messages and writes into ClickHouse®, and the ClickHouse® storage and query layer. Optionally, an API layer on top (e.g. Tinybird Pipes) exposes the data as REST endpoints.

Messages flow from producers into NATS; the connector (engine, your app + Events API, or custom consumer) reads and persists into ClickHouse®. From there you run SQL for ad-hoc analysis, BI tools, or published APIs for real-time dashboards.

What you need for a ClickHouse® integration NATS setup

To set up ClickHouse® integration NATS you need: NATS URL (host:port), subjects to subscribe to (or JetStream stream and consumer), credentials if required, and a choice of path (Tinybird Events API from your app, NATS engine, or custom consumer). Format (e.g. JSONEachRow) and schema must match what ClickHouse® or Tinybird expects. No custom code is required for the connect NATS to ClickHouse® path when using the NATS table engine; with Tinybird, a small consumer that POSTs to the Events API is enough.

NATS to ClickHouse®: one pipeline, three implementation paths

The NATS to ClickHouse® data flow is the same conceptually: messages leave NATS and land in ClickHouse® (or Tinybird’s ClickHouse®). The difference is who operates the connector and whether you get an API layer. Picking the right ClickHouse® integration NATS option is about ops, APIs, and control—not changing the pipeline logic.

Getting NATS data into ClickHouse® at scale

For high throughput, a NATS to ClickHouse® pipeline benefits from batching and backpressure. With the NATS engine you tune nats_num_consumers, nats_flush_interval_ms, and MergeTree parts; with Tinybird the Events API and ingestion layer handle batching. Whatever path you choose, getting NATS data into ClickHouse® reliably is the goal—then you can focus on schemas, queries, and APIs.

Use cases for ClickHouse® integration NATS

ClickHouse® integration NATS fits any use case where you need message or event data in NATS to be queryable for analytics or APIs.

Typical use cases: events, logs, metrics, dashboards

Typical examples: application event analytics, operational and app metrics, log aggregation, and real-time dashboards. In each case, the NATS to ClickHouse® pipeline delivers data from your broker into an analytical store you can query with SQL or expose via APIs.

In microservices, IoT, or backend systems, the same pattern applies: publish events to NATS, then get NATS data into ClickHouse® for reporting and low latency query serving.

When to choose managed vs self-managed ClickHouse® integration NATS

Choose Tinybird (managed) when you want to avoid operating the NATS engine or custom ETL and prefer a NATS to ClickHouse® pipeline that is “app + Tinybird.” Choose self-managed when you already run ClickHouse® and NATS and want the native engine. Choose a custom consumer when you need custom transformation or multi-destination routing. For cloud computing and analytical workloads, managed ingestion and APIs often shorten time-to-production.

Decision framework: how to choose your ClickHouse® integration NATS

Use these criteria to pick among the best ClickHouse® integration NATS options for your team.

Outcome: data in ClickHouse® only, or APIs too?

Do you only need NATS data in ClickHouse® for ad-hoc SQL or BI, or APIs and low-latency query serving? For the latter, a platform that adds an API layer (e.g. Tinybird) usually wins. If you only need getting NATS data into ClickHouse® for internal use, the NATS engine or a custom consumer may be enough.

Operational capacity and cost

Self-managed NATS engine requires tuning and monitoring; Tinybird removes cluster and connector ops and adds API publishing; custom consumer means you build and run the connect NATS to ClickHouse® logic. Include engineering time in cost; managed options often have lower total cost when you value ops.

Compatibility and lock-in

NATS uses its own protocol; ClickHouse®’s NATS engine and any consumer that can read NATS and write to ClickHouse® (or Tinybird) work. You’re not locked into a vendor protocol. Choose by who runs the pipeline and what you get on top (APIs, observability, support).

Why Tinybird is a strong ClickHouse® integration NATS option

For a managed ClickHouse® integration NATS with minimal ops and APIs from the same stack, Tinybird is a strong option.

Single platform to connect NATS to ClickHouse®

Your app (or bridge) consumes from NATS and posts to the Events API; Tinybird stores data in managed ClickHouse® and you publish Pipes as REST endpoints. No NATS engine to run, no cluster to tune. You configure the NATS to ClickHouse® path once in your app; Tinybird handles scaling, storage, and APIs.

ClickHouse® integration NATS on Tinybird can be live quickly: add a consumer that POSTs to the Events API, define Pipes, publish endpoints. For teams shipping real-time dashboards or embedded analytics, that speed matters.

Bottom line on the best ClickHouse® integration NATS options

Bottom line: The best ClickHouse® integration NATS options are Tinybird (app + Events API, managed ClickHouse® + APIs), self-managed ClickHouse® (NATS table engine), or a custom consumer/ETL. Shortest path to production APIs with minimal ops is Tinybird; if you only need data in ClickHouse® and will build your own access layer, the NATS engine or custom consumer can be enough.

Ready to connect NATS to ClickHouse® and expose real-time APIs? Try Tinybird free: add a small consumer that reads from NATS and posts to the Events API, then publish SQL as REST endpoints in minutes.

Frequently Asked Questions (FAQs)

What is ClickHouse® integration NATS?

ClickHouse® integration NATS is the practice of consuming message or event data from NATS (core or JetStream) and writing it into ClickHouse® for storage and analytics. The path can be the NATS table engine in ClickHouse®, your app plus Tinybird Events API, or a custom consumer. The term covers the full pipeline: NATS as source, a connector or app, and ClickHouse® as the analytical store.

Does Tinybird have a NATS connector?

Tinybird does not have a native NATS connector. You connect NATS to ClickHouse® via Tinybird by having your application (or a bridge service) consume messages from NATS and send them to Tinybird’s Events API (HTTP). Tinybird then stores the data in ClickHouse®-backed data sources and you can expose it via Pipes and APIs.

How does the ClickHouse® NATS engine work?

ClickHouse® (self-managed) provides a NATS table engine (ENGINE = NATS). You configure nats_url, nats_subjects, nats_format (e.g. JSONEachRow), and optional credentials and queue group; for JetStream you can set nats_stream and nats_consumer. A materialized view copies from this engine table into a MergeTree table. ClickHouse® consumes messages from NATS directly; ingestion and queries share the same cluster. This is the native NATS ClickHouse® integration when you run ClickHouse® yourself.

What are the main options for ClickHouse® integration NATS?

(1) Tinybird—your app consumes from NATS and posts to the Events API; Tinybird provides managed ClickHouse® and API publishing. (2) Self-managed ClickHouse®—use the NATS table engine plus materialized view. (3) Custom consumer or ETL—a service reads from NATS and writes to ClickHouse® (or Tinybird). Choice depends on who runs the pipeline and whether you need APIs from the same platform.

Can I connect NATS to ClickHouse® Cloud?

ClickHouse® Cloud’s ClickPipes does not currently list NATS as a supported source. To connect NATS to ClickHouse® when using ClickHouse® Cloud you can: (1) use a custom consumer that writes to ClickHouse® Cloud via HTTP or native protocol, or (2) have your app consume from NATS and send to Tinybird Events API (Tinybird uses ClickHouse® under the hood). For self-managed ClickHouse®, the NATS table engine is available.

When should I use Tinybird vs the NATS engine for ClickHouse® integration NATS?

Use Tinybird when you want getting NATS data into ClickHouse® without operating the NATS engine and need APIs or dashboards from the same platform. Use the NATS table engine when you already run ClickHouse® and NATS and want a single, native NATS to ClickHouse® path with full control. Tinybird when time-to-value and built-in APIs matter; the engine when you need minimal moving parts and have ops capacity.