Firestore: Best Practices, Scalability and Scale

📅 Date: 23.03.2026

🎙️ Speaker: Dimitar Danailov – software engineer with over 16 years of experience in scalable web and cloud systems

🔐 About the Event:

This event is part of the JavaScript user group.

In this lecture, we will explore how we practically scaled a Firestore-based system from approximately 50,000 to nearly 1,000,000 users in 18 months within the fan3.io project. Topics include:

• How we designed schema and indexes for high traffic
• Building complex dynamic queries on users (push filters, geofilters, age filters)
• Handling Firestore limitations (range + orderBy, GeoPoint, composite indexes)
• Trade-offs between flexibility and performance

The talk will focus on real production cases, best practices, and mistakes to avoid today.

There will be a Q&A session.

The event is free but requires prior registration.

🎯 Suitable for:

• Developers interested in Firestore and scalable systems
• JavaScript enthusiasts
• Professionals seeking practical insights into high-traffic database design

🔗 Sponsors:

Amusnet – amusnet profile

📌 Organized by DEV.BG – a specialized job board for IT vacancies

Check out JavaScript job offers: here.

Join the JavaScript user group for monthly events and updates: link.

We look forward to seeing you at 19:30!