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().

7
User 76469/16/25, 9:01 AM

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

7
User 76469/16/25, 9:01 AM

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

1
User 17699/16/25, 9:00 AM

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

1
User 17699/16/25, 9:00 AM

Hi Jamie... Could you let the customer know we've fixed their issue?

2
User 299/14/25, 7:52 AM

Hi Jamie; Could you let the customer know we've fixed their issue?

4
User 4739/14/25, 7:52 AM

hello James, how's the weather in SF?

4
User 4979/14/25, 7:52 AM

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

2
User 2939/14/25, 7:52 AM

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

7
User 7949/14/25, 7:52 AM

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

2
User 2409/14/25, 7:52 AM

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

9
User 9859/14/25, 7:52 AM

hey Nipunn... I'll be late to make the meeting tomorrow morning

3
User 3169/14/25, 7:52 AM

hi James! how's the weather in SF?

9
User 949/14/25, 7:52 AM

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

5
User 5909/14/25, 7:52 AM

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

5
User 5749/14/25, 7:52 AM

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

3
User 339/14/25, 7:52 AM

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

6
User 69659/14/25, 7:51 AM

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

6
User 69659/14/25, 7:51 AM

hey Emma, how was your weekend?

6
User 69659/14/25, 7:51 AM

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

6
User 69069/14/25, 7:51 AM

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

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