How much RAM does Shopify alternative need on a VPS?

Minimum RAM Requirements for Common Platforms

When we host Shopify alternatives like WooCommerce, Magento, or OpenCart on VPS infrastructure, the RAM requirement depends heavily on the platform, traffic volume, and whether you use caching or headless architectures.

WooCommerce

WooCommerce is a WordPress plugin and runs on PHP and MySQL. For a small store with under 1,000 products and moderate traffic, 2GB RAM is the baseline. However, we recommend 4GB RAM for production environments to handle PHP-FPM processes, MySQL caching, and WordPress overhead.

For larger catalogs or during sales events, you may need 8GB or more. See our guide on WooCommerce performance tuning for optimization tips.

Magento

Magento (Adobe Commerce) is more resource-intensive. The official recommendation for Magento 2 is at least 4GB RAM for development, but we recommend 8GB to 16GB for production stores with 10,000+ SKUs.

Magento uses more memory for indexing, full-page caching (Varnish), and Elasticsearch. If you're running Magento on a VPS, ensure you have swap space configured. Check our Magento VPS setup guide for detailed configuration.

OpenCart and PrestaShop

These platforms are lighter than Magento. OpenCart typically runs well on 2GB RAM for small stores. PrestaShop may need 4GB RAM for stores with 5,000+ products.

Headless and Composable Commerce

If you're using a headless setup with a separate frontend (e.g., Next.js, Nuxt.js) and backend (e.g., Shopify Plus alternative, BigCommerce), the RAM needs increase. You'll need separate VPS instances for frontend and backend, each with 4GB to 8GB RAM.

Factors That Increase RAM Usage

Several factors can push your RAM requirements higher:

• Traffic spikes: During sales or promotions, concurrent requests increase memory usage.
• Database size: Larger product catalogs and order histories require more RAM for MySQL/MariaDB buffers.
• Caching layers: Redis or Memcached add overhead but reduce database load.
• Background jobs: Cron jobs for indexing, email sending, and inventory sync consume memory.

Monitoring and Scaling

We monitor RAM usage via tools like htop, free -m, or our HostingDuty control panel. If your VPS consistently uses more than 80% of RAM, consider upgrading to a higher tier or adding swap space.

For detailed comparisons of hosting plans suitable for e-commerce, see our VPS vs Dedicated Server comparison.

External References

• How much RAM do you really need for servers and VPS in 2025?
• Magento 2 System Requirements