anycable-coder

Action Cable provides "at-most once" delivery—messages can be lost on reconnection. For LLM streaming where every chunk matters, this is insufficient.

| Delivery guarantee | At-most once | At-least once | | Message ordering | Not guaranteed | Guaranteed | | History on reconnect | No | Yes (configurable) | | Presence tracking | Manual | Built-in | | Performance | Ruby threads | Go server | | LLM streaming | Unreliable | Reliable |

| Action Cable for LLM streaming | Lost chunks on reconnect | Use AnyCable | | Ignoring message ordering | Garbled responses | AnyCable handles automatically | | Manual reconnection logic | Complex, error-prone | Use AnyCable client | | No presence tracking | Unknown user state | Use built-in presence API |