From 3e6ca32c7f27dd1d4e198b8f1f61590f87bba922 Mon Sep 17 00:00:00 2001
From: Idhaya Bastine Kennedy
 <162452887+IdhayaBastine15@users.noreply.github.com>
Date: Sat, 22 Aug 2026 19:35:48 +0100
Subject: [PATCH 1/2] fix(solid-query examples): guard prefetchQuery with  
 isServer in solid-start-streaming

---
 .../src/routes/prefetch.tsx                   | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/examples/solid/solid-start-streaming/src/routes/prefetch.tsx b/examples/solid/solid-start-streaming/src/routes/prefetch.tsx
index 73623302ebb..1463969cf81 100644
--- a/examples/solid/solid-start-streaming/src/routes/prefetch.tsx
+++ b/examples/solid/solid-start-streaming/src/routes/prefetch.tsx
@@ -1,13 +1,24 @@
 import { useQueryClient } from '@tanstack/solid-query'
 import { isServer } from 'solid-js/web'
 import { Title } from '@solidjs/meta'
+import type { RoutePreloadFuncArgs } from '@solidjs/router'
 import { UserInfo, userInfoQueryOpts } from '~/components/user-info'
 
 export const route = {
-  load: () => {
-    const queryClient = useQueryClient()
-    // Prefetching the user info and caching it for 15 seconds.
-    queryClient.prefetchQuery(userInfoQueryOpts({ sleep: 500, gcTime: 15000 }))
+  load: ({ intent }: RoutePreloadFuncArgs) => {
+    // The router re-runs `load` on the client during hydration, with the
+    // same `intent: "initial"` the server call gets. UserInfo's useQuery
+    // already hydrates that data on the client through its own resource,
+    // so prefetching again here just duplicates the fetch. Hover preload
+    // (`intent: "preload"`) and real navigation (`intent: "navigate"`)
+    // still need to run, since neither has server-rendered data to use.
+    if (isServer || intent !== 'initial') {
+      const queryClient = useQueryClient()
+      // Prefetching the user info and caching it for 15 seconds.
+      queryClient.prefetchQuery(
+        userInfoQueryOpts({ sleep: 500, gcTime: 15000 }),
+      )
+    }
   },
 }
 

From cedde571bca51906d386b5039bd753427c7d7388 Mon Sep 17 00:00:00 2001
From: Idhaya Bastine Kennedy
 <162452887+IdhayaBastine15@users.noreply.github.com>
Date: Mon, 24 Aug 2026 18:30:29 +0100
Subject: [PATCH 2/2] add empty changeset for #8840 example fix

---
 .changeset/slimy-peaches-pull.md | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 .changeset/slimy-peaches-pull.md

diff --git a/.changeset/slimy-peaches-pull.md b/.changeset/slimy-peaches-pull.md
new file mode 100644
index 00000000000..e7e11df1bd0
--- /dev/null
+++ b/.changeset/slimy-peaches-pull.md
@@ -0,0 +1,4 @@
+---
+---
+
+fix(solid-query/examples): guard the `prefetchQuery` call in the solid-start-streaming example's `/prefetch` route with `isServer || intent !== 'initial'`, so it only runs on the server and on real client-side preload/navigation, not on every client hydration, fixing the duplicate fetch reported in #8840