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().

8
User 85759/20/26, 6:15 AM

hey Jamie, what's your favorite ice cream place?

4
User 49149/20/26, 6:15 AM

Hi Emma, Could you let the customer know we've fixed their issue?

4
User 49149/20/26, 6:15 AM

hello Jamie- how's the weather in SF?

4
User 49149/20/26, 6:15 AM

hi Jamie- how was your weekend?

4
User 49149/20/26, 6:15 AM

hi Jamie- Could you let the customer know we've fixed their issue?

4
User 49149/20/26, 6:15 AM

hey Emma; I'll be late to make the meeting tomorrow morning

8
User 8649/12/26, 4:24 PM

hello Emma... I'll be late to make the meeting tomorrow morning

3
User 3889/12/26, 4:24 PM

hello James! how was your weekend?

2
User 2049/12/26, 4:24 PM

hey James, what's your favorite ice cream place?

9
User 9289/12/26, 4:24 PM

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

8
User 8479/12/26, 4:24 PM

hello Nipunn- what's your favorite ice cream place?

5
User 5479/12/26, 4:24 PM

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

5
User 5609/12/26, 4:24 PM

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

4
User 4509/12/26, 4:24 PM

hi James; I'll be late to make the meeting tomorrow morning

5
User 5889/12/26, 4:24 PM

Hi Emma... how's the weather in SF?

7
User 7719/12/26, 4:24 PM

hello Emma! what's your favorite ice cream place?

6
User 61868/7/26, 6:34 AM

hi Emma, how's the weather in SF?

6
User 61868/7/26, 6:34 AM

hey James; how was your weekend?

6
User 61868/7/26, 6:34 AM

hey Jamie- I'll be late to make the meeting tomorrow morning

3
User 35297/14/26, 11:32 PM

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

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