SolidApps: From Single-Tenant to Multi-Tenant in Record Time
A large enterprise‑grade platform grew 10× over three years on Bubble — and the system became the backbone of their success. A huge opportunity popped up in their eyes: they could white‑label the platform and grow 10× again by offering this powerful system to other companies in their industry. And that’s where SolidApps came in! SolidApps was engaged to transform a large single‑tenant application into a secure, scalable, multi‑tenant SaaS without downtime or data leakage.

Baseline (Before the Transition)

⚙ Application Structure
• Pages: 412
• Reusable Elements: 97
• Backend Workflows: 263
• Plugins Installed: 54
• API Connectors: 39

🌐 External Calls
• Front-end (pages + reusables): 1,472
• Back-end (API workflows): 836
• Total: 2,308 calls across 36 providers

🔒 Hardcoded Information
• Front-end: 613
• Back-end: 427
• Total: 1,040

⚡ Workflow Load (2025)
• Average Monthly Runs: 34.7 M
• Average Daily Runs: ≈ 1.16 M
• Peak: ~48 M (early 2025)
• Lowest: ~22 M (Aug 2025)
• Oct 2025: 39.8 M runs

💾 Storage
• File Storage Used: 280 GB (of 1 TB limit)

🖥 Server Specs
• App CPU: 96 cores
• DB CPU: 16 cores
• DB Storage: 536 GB (autoscaling to 800 GB)
• Cache Memory: 4 GB

📈 Server Performance (Sept–Oct 2025)
• App CPU Usage: ~82%
• DB CPU Usage: ~45%
• Free Cache: 1.9 GB
• Free DB Storage: 75 GB

The Mission

Convert a large single-tenant Bubble app into a secure, scalable multi-tenant SaaS. Each tenant must have full isolation of data, assets, and credentials — from email, SMS, and API keys to templates and visual assets — while preserving the speed and flexibility that powered the platform’s growth.

The Challenge

A system with 180+ data tables, ~2.3K external API calls, and tens of millions of monthly runs can’t simply be “duplicated.” It had to be rebuilt from the inside — surgically, safely, and quickly.

SolidApps’ Solution

Automated Database Refactor
Added a tenant field to all ~180 tables through one automated API call to Bubble’s backend.

Auto-Generated Database Triggers
Built event-based workflows to automatically populate the tenant field on every new record — created in days, not weeks.

Smart API Refactoring
Rerouted all ~2.3K external calls through secure backend logic, removing hardcoded tokens and dynamically loading per-tenant credentials.

AI-Assisted Transformation
Leveraged AI to parse the massive .bubble JSON, generate payloads, and safely inject new logic at scale.

Results So Far

The technical foundation for a brand-neutral, multi-tenant platform is complete — secure, scalable, and ready to onboard new tenants. Each tenant can have its own brand, colors, data silo, and integrations, while sharing the same high-performance backbone.

The Road Ahead

After the transformation, SolidApps migrated the main CPU‑consuming process to Back4App, reducing overall CPU usage from 82% to just 20% — all within two weeks. This optimization alone made the platform ready to grow up to 4× without upgrading the Bubble plan.

The next milestone is already underway: reducing another 50–60% of CPU load in the upcoming cycle. The SolidApps team is fully powered up and focused on achieving this next wave of optimization.

With the multi‑tenant backbone and performance improvements in place, SolidApps is enabling a future‑proof SaaS platform — brand‑neutral, secure, and engineered for scale.