Backends on Vercel
Backends deployed to Vercel receive the benefits of Vercel's infrastructure, including:
- Fluid compute: Zero-configuration, optimized concurrency, dynamic scaling, background processing, automatic cold-start prevention, region failover, and more
- Active CPU pricing: Only pay for the CPU you use, not waiting for I/O (e.g. calling AI models, database queries)
- Instant Rollback: Quickly revert to a previous production deployment
- Vercel Firewall: A robust, multi-layered security system designed to protect your applications
- Preview deployments with Deployment Protection: Secure your preview environments and test changes safely before production
- Rolling releases: Gradually roll out backends to detect errors early
Deploy the following backends to Vercel with zero-configuration.
If you are transitioning from a fully managed server or containerized environment to Vercel’s serverless architecture, you may need to rethink a few concepts in your application since there is no longer a server always running in the background.
The following are generally applicable to serverless, and therefore Vercel Functions (running with or without Fluid compute):
Serverless functions have maximum execution limits and should respond as quickly as possible. They should not subscribe to data events. Instead, we need a client that subscribes to data events and a serverless functions that publishes new data. Consider using a serverless friendly realtime data provider.
To manage database connections efficiently, use the attachDatabasePool function from @vercel/functions.
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