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.
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.
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
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-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
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
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
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
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
@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!
@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
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
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.