docs(deploy): add workers page for edge limitations

docs/content/2.deploy/2.workers.md

@@ -0,0 +1,53 @@
+---
+title: Workers
+description: Nitro provides out of the box support for deploying to 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](/deploy/providers/cloudflare)
+- [Vercel](/deploy/providers/vercel#vercel-edge-functions)
+- [Netlify](/deploy/providers/netlify#netlify-edge-functions)
+- [Lagon](/deploy/providers/lagon)
+- [Browser Service Workers](https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API) (via experimental preset `service-worker`)
+
+::alert{type="warning"}
+**Limitations**
+:br
+Deploying to edge workers has some limitations. See [limitations](/deploy/workers/#limitations) for more details.
+::
+
+### 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](/guide/introduction/storage) layer)
+- Budnle size is very limited (normally a few MBs)
+- Limited access Node.js APIs (nitro provides compatibility layer via [unjs/unenv](https://github.com/unjs/unenv))
+
+### Incompatible libraries
+
+::alert{type="info"}
+**Help us**
+:br
+If you come across a library that you assume to be incompatible with edge workers, please open an issue on the [nitro repo](https://github.com/unjs/nitro/issues/new/choose) 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](https://www.mongodb.com/docs/realm/sdk/node/) or
+> using http interfaces (only available when self hosting MongoDB), but these are untested. You can find an example for using realm [here](https://github.com/albionstatus/albionstatus-backend/)
+
+- `mysql`
+
+> You can find an example with a modified MySQL driver [here](https://github.com/cloudflare/worker-template-mysql)
+
+- `rhea`
+- `gremlin`
+- `ioredis`
+- `cassandra-driver`
+- `kafkajs`