Runtime Engines & 21 Pan-India Node Infrastructure | B A C Documentation

Configure Node.js runtimes (22.x, 20.x, 18.x, 16.x), 21 Indian datacenter locations, health probes, and 503 maintenance mode.

Deep Runtime & Edge Placement Engine

B A C allows fine-grained runtime control over your hosted services. Choose your exact Node.js runtime version, select from our 21-datacenter pan-India edge network, configure automated health probes, and toggle 503 maintenance mode with instant zero-downtime execution.

Node.js Runtime Engines

Every backend application runs on an isolated runtime container mapped directly to native service daemons. You can switch between active runtime engines with automatic dependency resolution:

Node.js 20.x LTS

Recommended for production stability, optimal memory management, and LTS security updates.

Node.js 22.x Current

Latest active LTS features, enhanced V8 engine optimizations, and native websocket enhancements.

Node.js 24.x Latest

Bleeding-edge JavaScript runtime engine with experimental high-throughput flags and latest Node.js capabilities.

Node.js 18.x Maintenance

Supported for applications with strict dependencies requiring Node 18 runtime environments.

Node.js 16.x Legacy

Legacy compatibility runtime with backward compatibility bridging.

Pan-India 21-Node Datacenter Infrastructure

Deploy your compute workloads close to your users across Tier-1 metros, Tier-2 tech corridors, and grassroots regional edge hubs:

Ahmedabad (HQ)

Bengaluru

Delhi NCR

Hyderabad

Pune

Chennai

Kolkata

Lucknow

Jaipur

Patna

Ranchi

Surat

Nashik

Coimbatore

Indore

Varanasi

Nagpur

Dhanbad

Jamshedpur

Muzaffarpur

Rural Regional Edge (Grassroots Edge Nodes)

Maintenance Mode Engine (503 Live Response)

When performing database migrations, major version upgrades, or offline maintenance, activate Maintenance Mode to immediately return HTTP 503 responses and prevent corrupt writes:

Standard Maintenance Card

Renders the built-in responsive maintenance screen with your custom title, estimated completion time, and support contact details.

Full Custom HTML Code Mode

Paste your own custom HTML/CSS code directly into the editor with built-in live iframe previewing before publishing.

Health Routes & Automated Monitoring

Configure automated health routes (e.g. /health, /api/health). Our monitoring daemons ping your endpoints at specified intervals (5s to 300s) and automatically synchronize with the public B A C Status Portal.