drawline.app

An open-source engine for populating your database with deterministic relationship-aware datasets.

[drawline.app @drawlineapp]

Closed a critical gap between WorkerPool and execution by adding shard-based, range-aware generation. This enables deterministic parallel data generation with identical output as single-threaded runs.

[drawline.app @drawlineapp]

Just fixed the core determinism bug in drawline-core's streaming pipeline!

Sharded parallel generation now produces BIT-FOR-BIT identical output to single-threaded. 4 workers × 25 docs = 100 docs same as 1 worker.

[drawline.app @drawlineapp]

Constraint Engine

Data isn’t just rows, it’s relationships.

We now support cross-column constraints like:

• start_date < end_date
• multi-column uniqueness

Integrity is enforced during generation.

#DataModeling #Engineering

[drawline.app @drawlineapp]

Zero-Memory Streaming

Biggest win today:

We can now generate millions of records by streaming directly to the database, no RAM bottlenecks.

Scalability is no longer a concern. It’s built in.

#DataEngineering #Performance

[drawline.app @drawlineapp]

drawline-core solves this:

✅ Same seed → same data every time
✅ Schema-aware generation
✅ Referentially intact data
✅ Zero production data exposure
Built for CI/CD, staging, and load testing.

https://t.co/r9CxPnPsVH

#DevTools #TestAutomation #SyntheticData

[drawline.app @drawlineapp]

Just merged 3 new database adapters into main for https://t.co/r9CxPnPsVH

• DynamoDB → AWS serverless
• SQL Server → Enterprise RDBMS
• Redis → In-memory cache

Now supports 8 databases with a unified API.

Shipping soon.

#Database #TestData #DeveloperTools

[drawline.app @drawlineapp]

The OLD way to get test data:

❌ Copy production data → security risk
❌ Manual SQL scripts → brittle & hard to maintain
❌ Faker → no real relationships

We knew there had to be a better way.

Stay tuned..

#Testing #SoftwareEngineering #DataEngineering

[drawline.app @drawlineapp]

@buildinpublic

Check out https://t.co/5iPZEENuBK on https://t.co/tlRJfGsjyL

https://t.co/GQpFG45zlx

[Dhanmoni @dmn_codes19]

Someone discovered Drawline on Reddit, paid for it, and publicly shared their experience.
No ads. No launch hype.
Just solving a real dev pain.
#BuildInPublic #saas #developer

[drawline.app @drawlineapp]

Thank you for supoorting us! Means alot!!

[Dhanmoni @dmn_codes19]

Someone discovered Drawline on Reddit, paid for it, and publicly shared their experience.
No ads. No launch hype.
Just solving a real dev pain.
#BuildInPublic #saas #developer

[Sauvik Nath @sauvik_na]

@buildinpublic The first paid user for our https://t.co/A2SeBIQg7j came after 4 days of launch. Felt surreal. Go Go claim the lifetime deal today. Filling up fast!

[Dhanmoni @dmn_codes19]

@mndotcc @drawlineapp checkout our use cases page in case you missed that out https://t.co/POf7qq9CX7. we are an end to end database prototyping dev tool

[Dhanmoni @dmn_codes19]

hey founders, what are you building / shipping this week.

we shipped new CSV data export, live mock API (POST, GET, PUT, PATCH), ORM code export, network chaos mode features for https://t.co/wyn9MQ0Vfi

@drawlineapp

[Dhanmoni @dmn_codes19]

dont just mock data. Mock the entire backend for your new saas using https://t.co/wyn9MQ0Vfi

[Dhanmoni @dmn_codes19]

unblock your frontend dev waiting for test apis from the backend dev.

start testing frontends using https://t.co/wyn9MQ0Vfi in seconds

@drawlineapp

[Dhanmoni @dmn_codes19]

we ship fast and we ship production data with https://t.co/wyn9MQ0Vfi

@drawlineapp

[drawline.app @drawlineapp]

Grabbbbb sooonnnn

[Dhanmoni @dmn_codes19]

Hey builders.
If you're building anything serious, checkout https://t.co/wyn9MQ0Vfi
Perfect for quick database prototyping, gives you instant API based on your db structure, and generate thousand of synthetic data to stress test your app before going live.

[drawline.app @drawlineapp]

@AlxTurovski Thank you

[Dhanmoni @dmn_codes19]

@heyblake Check https://t.co/wyn9MQ0Vfi

Lifetime offer filling up fast