Catch stale ClickHouse data with a Slack reminder
Spot a delayed data refresh and leave yourself a clear Slack follow-up before it slips out of mind.
Trigger
Recurring schedule
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Action
Create a reminder
Creates a slack reminder with specified text and time; time accepts unix timestamps, seconds from now, or natural language (e.g., 'in 15 minutes', 'every thursday at 2pm').
Why this helps
A stale dataset can quietly undermine decisions when refresh problems are not checked consistently.
- Check data recency on a recurring schedule.
- Create a follow-up only when freshness falls outside your stated target.
- Keep the next step visible in Slack.
Setup
Build it in a few focused steps.
- 1Connect ClickHouse and Slack once in the Notis portal.
- 2Create an automation in Automations, New Automation, and name it for the dataset freshness check.
- 3Describe how to identify the latest data timestamp, the freshness target, and when to create a Slack reminder.
- 4Choose a recurring schedule as the trigger and select where run reports should go.
- 5Test with one real example containing both fresh and stale data.
Questions about this workflow
How does Notis know what counts as stale?
State the maximum acceptable data age in the automation instruction. The query also needs to return a timestamp that Notis can assess.
Does the workflow create a reminder every time it runs?
Ask Notis to create a reminder only when the returned data exceeds your freshness target.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link ClickHouse to Slack. A trigger fires from one place; an action lands in another.
ClickHouse triggers
Slack actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Set snooze duration
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Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
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Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
Connect any two apps with Notis in the middle.
ClickHouse and Slack, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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