Base44
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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
Record was modified by another user
Conflict: this record has been updated since you loaded it
Your changes were overwritten
Version mismatch: expected 5, found 6
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.
Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks.
https://blog.vtemian.com/
hanson1014
Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround.
Antriksh Narang
5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
Jacek Rozanski
Senior PHP/Symfony developer and DevOps engineer with 20+ years of professional experience, running opcode.pl (web development agency, est. 2004).
Day job: I'm the sole backend developer at merketing company where I own and maintain 11 PHP/Symfony microservices on AWS (ECS Fargate, RDS, S3, CloudFront), handle the full CI/CD pipeline (Bitbucket Pipelines, Docker), and manage monitoring with Sentry and CloudWatch. These services handle high request volumes in production every month.
What I bring to AI-built apps:
- I audit and fix security issues (OWASP methodology), performance bottlenecks, and architectural problems in codebases generated by Cursor, Claude Code, Lovable, Bolt, and v0
- I refactor AI-generated prototypes into production-grade applications with proper error handling, testing, and clean architecture (SOLID, DDD, hexagonal architecture)
- I set up the infrastructure AI tools don't touch: AWS hosting, CI/CD pipelines, automated deployments, database optimization, monitoring, and alerting
- I integrate external services: payment providers, email systems, partner APIs, SSO/auth
Tech stack: PHP 8.x, Symfony, React, Next.js, PostgreSQL, MySQL, Docker, AWS (ECS, RDS, S3, SQS/SNS, CloudFront), Terraform, Supabase. I also use AI tools daily (Claude Code, Cursor) in my own workflow, so I understand both the strengths and the gaps in AI-generated code.
Based in Poland (CET timezone). Available for async work and calls during EU/US business hours.
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.
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Matt Butler
Software Engineer @ AWS
Luca Liberati
I work on monoliths and microservices, backends and frontends, manage K8s clusters and love to design apps architecture
BurnHavoc
Been around fixing other peoples code for 20 years.
Tejas Chokhawala
Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript.
Focused on performance, clean architecture and shipping fast.
Experienced with Supabase/Postgres backends, Stripe billing, and building AI-assisted developer tools.
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.