Multiple Users Editing Same Record Overwrite Each Other
When two team members edit the same record simultaneously in your Base44 app, the last person to save silently overwrites the first person's changes. There's no warning, no conflict detection, and no way to merge changes. Data is lost without anyone knowing until someone notices their edits disappeared.
This is a critical problem for team-oriented Base44 apps: CRM systems where multiple sales reps update the same contact, project management tools where team members update task details, and inventory systems where multiple warehouse staff modify stock counts.
The damage is often invisible. Users make changes they believe are saved, make decisions based on those changes, and only discover days later that their edits were overwritten by a colleague who was editing at the same time.
Error Messages You Might See
Common Causes
- Last-write-wins with no versioning — The app saves the full record on every edit, overwriting all fields including ones the user didn't change
- No optimistic locking — There's no version number or timestamp check to detect when a record was modified by someone else between load and save
- No real-time presence indicators — Users don't know someone else is editing the same record
- Full record saves instead of field-level patches — Saving updates all fields, not just the ones the user changed, maximizing the chance of overwriting
- No edit locking mechanism — There's no way to 'lock' a record while editing to prevent concurrent modifications
How to Fix It
- Add optimistic locking — Store a version number or updated_at timestamp on each record. Before saving, check that the version matches what was loaded. If not, warn the user
- Show who's currently editing — Display a real-time indicator when another user has the same record open for editing
- Use field-level patches — Only save the fields the user actually changed, not the entire record, to minimize conflicts
- Implement conflict resolution UI — When a conflict is detected, show the user both versions and let them choose which changes to keep
- Add edit locking — When a user opens a record for editing, lock it for other users with a timeout (e.g., 5 minutes)
Real developers can help you.
Costea Adrian
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Dor Yaloz
SW engineer with 6+ years of experience,
I worked with React/Node/Python
did projects with React+Capacitor.js for ios
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Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture.
I played a key role in creating a scalable and maintainable platform to support educators and learners globally.
I'm enthusiastic about embracing new challenges and making meaningful contributions.
ISHANTDEEP SINGH
Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.
Yovel Cohen
I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well.
Tejas Chokhawala
Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript.
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Matt Butler
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Simon A.
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Anthony Akpan
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You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How do I prevent users from overwriting each other's changes?
Add a version number or updated_at timestamp to your records. Before saving, check that the version hasn't changed since the user loaded the record. If it has, show a conflict warning and let the user review the other person's changes.
Is real-time collaborative editing possible in Base44?
Full real-time collaboration (like Google Docs) requires WebSocket connections and operational transforms, which is complex. A simpler approach is showing who's currently editing a record and using optimistic locking to detect and resolve conflicts at save time.