Edge Workers

Deploy to workers

Nitro provides out of the box support for deploying any Nitro app to different Edge Worker offerings as well as Service Workers.

Cloudflare
Deno Deploy
Vercel
Netlify
Browser Service Workers (via experimental preset service-worker)

Worker limitations

No support for raw TCP/IP traffic
Execution time is limited compared to classic serverless offerings (normally 15-30 seconds)
No access to the filesystem (use the nitro storage layer)
Bundle size is very limited (normally a few MBs)
Limited access Node.js APIs (nitro provides compatibility layer via unjs/unenv)

Incompatible libraries

If you come across a library that you assume to be incompatible with edge workers, please open an issue on the nitro repo and help us keeping this list up to date.

The following libraries are known to be incompatible with edge workers because of one of the above mentioned limitations:

`mongodb`

There are possible fixes for MongoDB, like using Realm and the Realm SDK or using http interfaces (only available when self hosting MongoDB), but these are untested. You can find an example for using realm here

`mysql`

You can find an example with a modified MySQL driver here

rhea
gremlin
ioredis
cassandra-driver
kafkajs

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Overview

Learn more about Nitro deploy providers.

Custom Preset

If you want to use a provider that Nitro doesn't support, or want to modify an existing one, you can create a local custom preset in your project.