Convex with TanStack Start

Server-Side Rendering and Live Queries

TanStack Start routes render on the server for the first pageload of a browsing session. Neither the React Query nor standard Convex useQuery() hooks kick off requests for this data during this initial SSR pass, but the React Query hook useSuspenseQuery() does. The React Query client is then serialized with whatever data was loaded to make it available in the browser at hydration time. This reduces rendering on the server and updating on the client from two steps to one step: isomorphic data fetching with a single hook.

Try reloading this page to see the difference between useSuspenseQuery() and useQuery().

5
User 50553/14/26, 8:33 PM

hello Nipunn, I'll be late to make the meeting tomorrow morning

5
User 50553/14/26, 8:33 PM

hey Nipunn! what's your favorite ice cream place?

5
User 50553/14/26, 8:33 PM

hello James! Could you let the customer know we've fixed their issue?

7
User 7113/14/26, 8:31 PM

hello James; how's the weather in SF?

4
User 4923/14/26, 8:31 PM

hey Jamie, Could you let the customer know we've fixed their issue?

7
User 7043/14/26, 8:31 PM

hey Nipunn- how's the weather in SF?

9
User 9443/14/26, 8:31 PM

hi Nipunn; what's your favorite ice cream place?

8
User 8773/14/26, 8:31 PM

hello Nipunn- Could you let the customer know we've fixed their issue?

6
User 6433/14/26, 8:31 PM

hey Emma- how's the weather in SF?

5
User 5573/14/26, 8:31 PM

hey Jamie, how was your weekend?

2
User 2363/14/26, 8:31 PM

hello Emma- how's the weather in SF?

1
User 1903/14/26, 8:31 PM

hi Emma! I'll be late to make the meeting tomorrow morning

4
User 4843/14/26, 8:31 PM

hi James! how was your weekend?

5
User 5793/14/26, 8:31 PM

Hi Nipunn! Could you let the customer know we've fixed their issue?

7
User 7963/14/26, 8:31 PM

hey Emma... how was your weekend?

9
User 9163/14/26, 8:31 PM

Hi Nipunn- how's the weather in SF?

3
User 313/14/26, 8:31 PM

hi Emma... what's your favorite ice cream place?

4
User 4533/14/26, 8:31 PM

hello Jamie! how was your weekend?

9
User 9253/14/26, 8:31 PM

hello James; how was your weekend?

1
User 1583/14/26, 8:31 PM

hi Emma... how was your weekend?

1const { data } = useSuspenseQuery(convexQuery(
2  api.messages.listMessages,
3  { channel: "chatty" }
4))
1const { data, isPending } = useQuery(convexQuery(
2  api.messages.listMessages,
3  { channel: "chatty" }
4))

On the browser these queries resume their subscriptions which you can see by .

Another way to opt into server-side data loading is to load the query in a loader.

Learn More

TanStack Start SSR Guide