---
title: "Lightweight deletes for Tinybird Data Sources now in Beta"
url: https://daily.dev/posts/lightweight-deletes-for-tinybird-data-sources-now-in-beta-qbljnl0mz
source_url: https://www.tinybird.co/blog/lightweight-deletes
type: article
source: "Tinybird"
published: 2026-06-30T11:23:23.528Z
updated: 2026-06-30T11:23:49.409Z
tags: ["backend", "clickhouse", "gdpr", "tinybird"]
reading_time: 4
upvotes: 3
comments: 0
language: en
---

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# Lightweight deletes for Tinybird Data Sources now in Beta

**[Tinybird](https://daily.dev/sources/tinybird)** · 4 min read · 3 upvotes · 0 comments

## Summary

Tinybird is launching a beta for lightweight deletes on Data Sources via a new API endpoint (`POST /v1/datasources/{name}/delete`). Unlike the old heavy mutation approach that rewrites disk parts, the new method uses ClickHouse's native lightweight DELETE, which materializes a hidden `_row_exists` mask instead of copying data. This makes deletes complete in milliseconds to seconds rather than minutes or hours. The endpoint supports both synchronous and asynchronous modes, an optional partition-scoping parameter, and is useful for GDPR right-to-be-forgotten requests, removing bad ingest data, and partition-scoped cleanups.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.tinybird.co/blog/lightweight-deletes>

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---

Tags: [#backend](https://daily.dev/tags/backend), [#clickhouse](https://daily.dev/tags/clickhouse), [#gdpr](https://daily.dev/tags/gdpr), [#tinybird](https://daily.dev/tags/tinybird)

[View this post on daily.dev](https://daily.dev/posts/lightweight-deletes-for-tinybird-data-sources-now-in-beta-qbljnl0mz)