Base44
realtime
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.
Victor Denisov
Developer
Franck Plazanet
I am a Strategic Engineering Leader with over 8 years of experience building high-availability enterprise systems and scaling high-performing technical teams. My focus is on bridging the gap between complex technology and business growth.
Core Expertise:
🚀 Leadership: Managing and coaching teams of 15+ engineers, fostering a culture of accountability and continuous improvement.
🏗️ Architecture: Enterprise Core Systems, Multi-system Integration (ERP/API/ETL), and Core Database Structure.
☁️ Cloud & Scale: AWS Expert; architected systems handling 10B+ monthly requests and managing 100k+ SKUs.
📈 Business Impact: Aligning tech strategy with P&L goals to drive $70k+ in monthly recurring revenue.
I thrive on "out-of-the-box" thinking to solve complex technical bottlenecks and am always looking for ways to use automation to improve business productivity.
Stanislav Prigodich
15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it.
Costea Adrian
Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system.
Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
My expertise lies in the critical backend infrastructure: the parts that must be fast, secure, and scalable. I thrive on high-pressure environments, such as when I had only three weeks to architect and launch an Ethereum redemption system with minimal prior crypto knowledge, turning it into a major revenue stream.
What I bring to your project:
Forensic Debugging: I don't just "patch" bugs; I use tools like Datadog and Explain Analyzers to map out bottlenecks and resolve root causes—like significantly reducing memory usage by optimizing complex DB joins.
Full-Stack Context: Deep experience in Node.js and React, ensuring backends play perfectly with mobile and web teams.
Sanity in the Age of AI: I bridge the gap between "best practices" and modern speed, ensuring your project isn't just built fast, but built to last.
Mehdi Ben Haddou
- Founder of Chessigma (1M+ users) & many small projects
- ex Founding Engineer @Uplane (YC F25)
- ex Software Engineer @Amazon and @Booking.com
Luca Liberati
I work on monoliths and microservices, backends and frontends, manage K8s clusters and love to design apps architecture
Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
Matt Butler
Software Engineer @ AWS
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
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.