THTheIronYuppie·Oct 26, 2023Submission
Synth: A tool for generating realistic data using a declarative data model
1 points · Open discussionshuttle-hq
synth
Rust2021–2023
shuttle-hq / synth
synth
The Declarative Data Generator
5Distinct people
6Mentions
0Explicit recommenders
1.5KGitHub stars
What to know before exploring
What it is
The Declarative Data Generator
GitHub
Where it is used
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What people are saying
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Also in these discussions
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by month6 dated mentions
Observed mentions: 2021-03-24 12:59:56 UTC to 2023-10-26 18:09:55 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Mar 2021 | 2021-03-01 00:00:00 UTC | 2021-04-01 00:00:00 UTC | 1 | 0 | 1 |
| Apr 2021 | 2021-04-01 00:00:00 UTC | 2021-05-01 00:00:00 UTC | 0 | 0 | 0 |
| May 2021 | 2021-05-01 00:00:00 UTC | 2021-06-01 00:00:00 UTC | 1 | 1 | 0 |
| Jun 2021 | 2021-06-01 00:00:00 UTC | 2021-07-01 00:00:00 UTC | 1 | 0 | 1 |
| Jul 2021 | 2021-07-01 00:00:00 UTC | 2021-08-01 00:00:00 UTC | 0 | 0 | 0 |
| Aug 2021 | 2021-08-01 00:00:00 UTC | 2021-09-01 00:00:00 UTC | 0 | 0 | 0 |
| Sep 2021 | 2021-09-01 00:00:00 UTC | 2021-10-01 00:00:00 UTC | 0 | 0 | 0 |
| Oct 2021 | 2021-10-01 00:00:00 UTC | 2021-11-01 00:00:00 UTC | 2 | 0 | 2 |
| Nov 2021 | 2021-11-01 00:00:00 UTC | 2021-12-01 00:00:00 UTC | 0 | 0 | 0 |
| Dec 2021 | 2021-12-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 0 | 0 | 0 |
| Jan 2022 | 2022-01-01 00:00:00 UTC | 2022-02-01 00:00:00 UTC | 0 | 0 | 0 |
| Feb 2022 | 2022-02-01 00:00:00 UTC | 2022-03-01 00:00:00 UTC | 0 | 0 | 0 |
| Mar 2022 | 2022-03-01 00:00:00 UTC | 2022-04-01 00:00:00 UTC | 0 | 0 | 0 |
| Apr 2022 | 2022-04-01 00:00:00 UTC | 2022-05-01 00:00:00 UTC | 0 | 0 | 0 |
| May 2022 | 2022-05-01 00:00:00 UTC | 2022-06-01 00:00:00 UTC | 0 | 0 | 0 |
| Jun 2022 | 2022-06-01 00:00:00 UTC | 2022-07-01 00:00:00 UTC | 0 | 0 | 0 |
| Jul 2022 | 2022-07-01 00:00:00 UTC | 2022-08-01 00:00:00 UTC | 0 | 0 | 0 |
| Aug 2022 | 2022-08-01 00:00:00 UTC | 2022-09-01 00:00:00 UTC | 0 | 0 | 0 |
| Sep 2022 | 2022-09-01 00:00:00 UTC | 2022-10-01 00:00:00 UTC | 0 | 0 | 0 |
| Oct 2022 | 2022-10-01 00:00:00 UTC | 2022-11-01 00:00:00 UTC | 0 | 0 | 0 |
| Nov 2022 | 2022-11-01 00:00:00 UTC | 2022-12-01 00:00:00 UTC | 0 | 0 | 0 |
| Dec 2022 | 2022-12-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 0 | 0 | 0 |
| Jan 2023 | 2023-01-01 00:00:00 UTC | 2023-02-01 00:00:00 UTC | 0 | 0 | 0 |
| Feb 2023 | 2023-02-01 00:00:00 UTC | 2023-03-01 00:00:00 UTC | 0 | 0 | 0 |
| Mar 2023 | 2023-03-01 00:00:00 UTC | 2023-04-01 00:00:00 UTC | 0 | 0 | 0 |
| Apr 2023 | 2023-04-01 00:00:00 UTC | 2023-05-01 00:00:00 UTC | 0 | 0 | 0 |
| May 2023 | 2023-05-01 00:00:00 UTC | 2023-06-01 00:00:00 UTC | 0 | 0 | 0 |
| Jun 2023 | 2023-06-01 00:00:00 UTC | 2023-07-01 00:00:00 UTC | 0 | 0 | 0 |
| Jul 2023 | 2023-07-01 00:00:00 UTC | 2023-08-01 00:00:00 UTC | 0 | 0 | 0 |
| Aug 2023 | 2023-08-01 00:00:00 UTC | 2023-09-01 00:00:00 UTC | 0 | 0 | 0 |
| Sep 2023 | 2023-09-01 00:00:00 UTC | 2023-10-01 00:00:00 UTC | 0 | 0 | 0 |
| Oct 2023 | 2023-10-01 00:00:00 UTC | 2023-11-01 00:00:00 UTC | 1 | 1 | 0 |
What Hacker News says
6 sourcesSEEKING FREELANCER | London | Remote
Synth (YC S20) [1] is an open source declarative data generator written 100% in Rust.
We are looking for someone with prior experience writing Rust in production for a 1-to-3 months contract to work with us on our core open-source project.
- Proven experience writing production Rust code, preferably in a large code base
- Knowledge of PostgreSQL at a level sufficient to design and build reliable integration
- Strong knowledge of data structures and algorithms
- Track record of contribution to open-source projects, preferably on GitHub
- Ability to work quickly and rigorously in a fully remote setting
If that sounds interesting, we want to talk to you! Shoot me an email at damien [at] getsynth.com!
[1]: https://github.com/getsynth/synth
In Ask HN: Freelancer? Seeking freelancer? (October 2021)Synth | Rust Software Engineer | Full Time or Part Time | London | Onsite(London)/Remote
About us: Synth is an open source declarative data generator (https://github.com/getsynth/synth). We are building Synth with the intention of solving, once and for all, the problem of generating realistic data for testing - helping big companies and small developers avoid the use of production data in testing.
Our mission is to build amazing developer tools that solve data privacy without forcing users to compromise on productivity. We have a few exciting products in our pipeline and we're backed by YCombinator and other great investors. We're based in London and building a remote-friendly culture.
We work exclusively on open source software. This is great because our community is not confined to just our core team and the users, but also includes our
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contributors - we believe it is way more fun this way.
Apply here: https://forms.clickup.com/f/6akn9-781/I99ZH32QWD9FL3QOES
To learn more email: damien@getsynth.com
Hey HN! We're Synth - a bunch of engineers out of Europe building tooling for developers. We're very excited about what we're working on and wanted to share it with the community.
We've been quite frustrated with the status quo of test data generation - after speaking to tons of other devs we've realised that many people are struggling when it comes to generating realistic looking test data.
Also, where people don’t want to copy sensitive production data to testing environments, data obfuscation can be a huge time-sink.
Enter Synth: a declarative data generator (see our website: https://getsynth.com/, github: https://github.com/getsynth/synth)
Synth enables devs and dev teams to have their application data models as code (basically a hierarchy of files) in their repos. These files can then be used to generate data for a local dev environm
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ent, automated testing in CI or even for sharing across organisations. The parameters of generation can also be tweaked to push the data model to its limits for QA, and even scaled for load testing / performance testing.
We're now working on taking the next step, and building a DSL around Synth. The Synth DSL will enable users to concisely define what data should look like and get going.
We're open source and written 100% in Rust. We believe that by making test data be as easy as using production data, we can improve the security and privacy for all of us. We'd love to get more early users as the initial feedback is positive but limited.
Thank you and looking forward to any feedback / ideas about how we can build a better tool for you!
P.S. Synth launched on HN a while back (https://news.ycombinator.com/item?id=24198114) as an ML solution to create realistic (and safe) copies of your sensitive production data as a service. This approach quickly hit several limitations which couldn't address the use-cases we are trying to solve, happy to go into more details on this if anyone is interested.
Synth is a tool for generating realistic data using a declarative data model
30 points · Open discussionThis looks convenient (and performant). But how does it scale as queries join across tables?
If you need to create test data with complex business logic, referential integrity and constraints we've been working on declarative data generator that is build exactly for this: https://github.com/openquery-io/synth.
In How to create a 1M record table with a single query