# swyx says Durable Objects make free chat on any web interface practical

> Original title: celld/DOs are awesome.

- Source: swyx
- Published: 2026-10-30T21:00:06.000Z
- Bad Influence: https://badinfluence.news/items/aexjf84p6pnxx4np3hp95yoie
- Original: https://x.com/swyx/status/2116273966629478744

## Summary

swyx added an old-school IRC chat channel to his blog and says Cloudflare Durable Objects let anyone add chat to any interface for $0 with a good local dev experience. He argues the web can stay open and social, and that readers never have to read alone. The post links to rough__sea's celld, an open-source, Apache 2 licensed, self-hosted implementation of Workers and Durable Objects that needs only an S3-compatible bucket and uses about 4 MB per cell instance.

## Post

celld/DOs are awesome.

added an old school irc chat channel to my blog recently and realized that you can literally add chat to every interface for actually $0 (as in free) with a good local dev experience now

you never have to read alone. the web can be open AND social.

![](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FHV6DnZqasAAA-4E.jpg&mode=thumb&exp=1793664000&sig=470969a9876f6f21)

## Quoted post @rough__sea

> Introducing celld: a self-hosted, distributed Durable Objects and Workers implementation
> 
> - celld = V8 + S3 + SQLite + LTX+ Tokio
> - programmed with exactly the Cloudflare Workers/DO JavaScript APIs and config
> - order of magnitude cheaper at scale
> - writes are durable before they're acknowledged, RPO=0
> - only depends on an S3 compatible bucket - no other infrastructure
> - ~4 MB memory per cell instance overhead
> - hibernated cells cost ~nothing, just their S3 storage
> - open source, Apache 2 licensed

https://x.com/rough__sea/status/2085001943693549887