Ask HN: Any good tools to pgdump multi tenant database?

3•polishdude20•1y ago

Just joined a new company and they run a multi tenant database in postgres where each tenant is distinguished by their account ID. I'd like to be able to dump the data of a single account to my local instance to assist in debugging.

Problem is, many of the entities do not include an account ID. For example, a user can have an account ID but a user post will not but it will be tied to a user ID.

Also foreign keys aren't really implemented fully.

Are there any tools or techniques that could help make this process easier to do?

Comments

tudorg•1y ago

You can try with data subsetting tools, a few that I know are: greenmask, jailer, tonic condenser, and I think there are more. They are not exactly for your use case, but might help you a bit. The problem is most of these tools can walk foreign keys, but only in one directions.

Also, since you said FK are not fully implemented, then there just won't be enough information for them to work with. So you can either work on fixing the foreign keys or have more complex scripts.

polishdude20•1y ago

Thanks for the suggestions!

Yeah due to the unavailability of FK's, I'd have to somehow map certain ID columns to the tables they're for, accounting for slight naming convention differences.

woyten•1y ago

In case you don’t have FKs you could specify virtual foreign keys in Greenmask.

Check out docs for details

https://docs.greenmask.io/latest/database_subset/#virtual-re...

abhisek•1y ago

This is poor design. Multi-tenant data model design must have a tenant or segment ID for every tenant segmented tables. While it may not be a problem initially but as the business grows, you may need to move tenant data to separate DBs or even different regions based on compliance requirements. IMHO it is a good idea to run DB migrations and have a tenant ID populated in all tenant segmented tables

polishdude20•1y ago

Oh yes I agree with you. It may become a big push to convince my org to do that

A Visit to id Software ft Bobby Prince (1993) [video]

The History of TypeScript

Show HN: Rlsgate – Block the Supabase RLS leak before you deploy (CLI)

'We had to get out of the way': The backlash over delivery robots

Project Fetch: Phase Two

Pondering routing more of my traffic via nodes outside the UK

Show HN: Agentic coding workflows built on Git worktrees and task evidence

Show HN: Money Simulator

Show HN: Codeflowmap – map a codebase's read/write/auth data flows

Beyond the $7.4B Headline: DeepSeek's Series A signals Chinese AI alliance shift

LiveKit Solves Turn Detection

Trump and Netanyahu Have Stepped in It Now

Typewriter Tinnitus/Morse Code Tinnitus

Show HN: FERNme – agent memory that updates with ~zero LLM calls

Giant Banana Pulled Over: Driver Says Cops Have Stopped Him 100s of Times

Show HN: HN Game Stories – mini-documentary of games that hit the front page

Show HN: Submarius – Global water clarity for divers

Show HN: Starchart and Repo Header Generator

Ask HN: What are some good benchmarks for different agent harnesses?

A Leaked GitHub Token Exposed the Exact Ozempic Formula

Ask HN: After you ship a feature, what happens to what you learned?

Show HN: Vitrus – the company brain that tells you what it doesn't know

Hackingpal

Ask HN: What are your parameter count estimates for Opus 4.8 and GPT-5.5?

Query with Curl

Extracted Value

Multi Pong – multiplayer pong game

New V4 encryption format that supports hardware-bound encryption using Yubikeys

Epoll vs. Io_uring in Linux

The Tiny Sailing Game That Feels Surprisingly Real [video]