diff --git a/packages/start/config/index.js b/packages/start/config/index.js
index afc40039e..53d1946af 100644
--- a/packages/start/config/index.js
+++ b/packages/start/config/index.js
@@ -9,6 +9,7 @@ import { config } from "vinxi/plugins/config";
 import solid from "vite-plugin-solid";
 import { SolidStartClientFileRouter, SolidStartServerFileRouter } from "./fs-router.js";
 import { serverComponents } from "./server-components.js";
+import xxHash32 from "./xxhash32.js";
 
 const DEFAULT_EXTENSIONS = ["js", "jsx", "ts", "tsx"];
 
@@ -37,6 +38,10 @@ function solidStartServerFsRouter(config) {
     );
 }
 
+function getFunctionId(id) {
+  return xxHash32(id).toString(16);
+}
+
 const SolidStartServerFnsPlugin = createTanStackServerFnPlugin({
   // This is the ID that will be available to look up and import
   // our server function manifest and resolve its module
@@ -47,7 +52,7 @@ const SolidStartServerFnsPlugin = createTanStackServerFnPlugin({
         fileURLToPath(new URL("../dist/runtime/server-runtime.js", import.meta.url))
       )}"`,
     replacer: opts =>
-      `createServerReference(${() => {}}, '${opts.functionId}', '${opts.extractedFilename}')`
+      `createServerReference(${() => {}}, '${(opts.functionId)}', '${getFunctionId(opts.extractedFilename)}')`
   },
   ssr: {
     getRuntimeCode: () =>
@@ -55,7 +60,7 @@ const SolidStartServerFnsPlugin = createTanStackServerFnPlugin({
         fileURLToPath(new URL("../dist/runtime/server-fns-runtime.js", import.meta.url))
       )}'`,
     replacer: opts =>
-      `createServerReference(${opts.fn}, '${opts.functionId}', '${opts.extractedFilename}')`
+      `createServerReference(${opts.fn}, '${(opts.functionId)}', '${getFunctionId(opts.extractedFilename)}')`
   },
   server: {
     getRuntimeCode: () =>
@@ -63,7 +68,7 @@ const SolidStartServerFnsPlugin = createTanStackServerFnPlugin({
         fileURLToPath(new URL("../dist/runtime/server-fns-runtime.js", import.meta.url))
       )}'`,
     replacer: opts =>
-      `createServerReference(${opts.fn}, '${opts.functionId}', '${opts.extractedFilename}')`
+      `createServerReference(${opts.fn}, '${(opts.functionId)}', '${getFunctionId(opts.extractedFilename)}')`
   }
 });
 
diff --git a/packages/start/config/xxhash32.js b/packages/start/config/xxhash32.js
new file mode 100644
index 000000000..1e9911297
--- /dev/null
+++ b/packages/start/config/xxhash32.js
@@ -0,0 +1,214 @@
+// @ts-nocheck
+/**
+ * Copyright (c) 2019 Jason Dent
+ * https://github.com/Jason3S/xxhash
+ */
+const PRIME32_1 = 2654435761;
+const PRIME32_2 = 2246822519;
+const PRIME32_3 = 3266489917;
+const PRIME32_4 = 668265263;
+const PRIME32_5 = 374761393;
+
+function toUtf8(text) {
+  const bytes = [];
+  for (let i = 0, n = text.length; i < n; ++i) {
+    const c = text.charCodeAt(i);
+    if (c < 0x80) {
+      bytes.push(c);
+    } else if (c < 0x800) {
+      bytes.push(0xc0 | (c >> 6), 0x80 | (c & 0x3f));
+    } else if (c < 0xd800 || c >= 0xe000) {
+      bytes.push(0xe0 | (c >> 12), 0x80 | ((c >> 6) & 0x3f), 0x80 | (c & 0x3f));
+    } else {
+      const cp =
+        0x10000 + (((c & 0x3ff) << 10) | (text.charCodeAt(++i) & 0x3ff));
+      bytes.push(
+        0xf0 | ((cp >> 18) & 0x7),
+        0x80 | ((cp >> 12) & 0x3f),
+        0x80 | ((cp >> 6) & 0x3f),
+        0x80 | (cp & 0x3f),
+      );
+    }
+  }
+  return new Uint8Array(bytes);
+}
+/**
+ *
+ * @param buffer - byte array or string
+ * @param seed - optional seed (32-bit unsigned);
+ */
+export default function xxHash32(
+  buffer,
+  seed = 0,
+) {
+  buffer = typeof buffer === 'string' ? toUtf8(buffer) : buffer;
+  const b = buffer;
+
+  /*
+    Step 1. Initialize internal accumulators
+    Each accumulator gets an initial value based on optional seed input.
+    Since the seed is optional, it can be 0.
+    ```
+      u32 acc1 = seed + PRIME32_1 + PRIME32_2;
+      u32 acc2 = seed + PRIME32_2;
+      u32 acc3 = seed + 0;
+      u32 acc4 = seed - PRIME32_1;
+    ```
+    Special case : input is less than 16 bytes
+    When input is too small (< 16 bytes), the algorithm will not process any stripe.
+    Consequently, it will not make use of parallel accumulators.
+    In which case, a simplified initialization is performed, using a single accumulator :
+    u32 acc  = seed + PRIME32_5;
+    The algorithm then proceeds directly to step 4.
+  */
+
+  let acc = (seed + PRIME32_5) & 0xffffffff;
+  let offset = 0;
+
+  if (b.length >= 16) {
+    const accN = [
+      (seed + PRIME32_1 + PRIME32_2) & 0xffffffff,
+      (seed + PRIME32_2) & 0xffffffff,
+      (seed + 0) & 0xffffffff,
+      (seed - PRIME32_1) & 0xffffffff,
+    ];
+
+    /*
+      Step 2. Process stripes
+      A stripe is a contiguous segment of 16 bytes. It is evenly divided into 4 lanes,
+      of 4 bytes each. The first lane is used to update accumulator 1, the second lane
+      is used to update accumulator 2, and so on. Each lane read its associated 32-bit
+      value using little-endian convention. For each {lane, accumulator}, the update
+      process is called a round, and applies the following formula :
+      ```
+      accN = accN + (laneN * PRIME32_2);
+      accN = accN <<< 13;
+      accN = accN * PRIME32_1;
+      ```
+      This shuffles the bits so that any bit from input lane impacts several bits in
+      output accumulator. All operations are performed modulo 2^32.
+      Input is consumed one full stripe at a time. Step 2 is looped as many times as
+      necessary to consume the whole input, except the last remaining bytes which cannot
+      form a stripe (< 16 bytes). When that happens, move to step 3.
+    */
+
+    const b = buffer;
+    const limit = b.length - 16;
+    let lane = 0;
+    for (offset = 0; (offset & 0xfffffff0) <= limit; offset += 4) {
+      const i = offset;
+      const laneN0 = b[i + 0] + (b[i + 1] << 8);
+      const laneN1 = b[i + 2] + (b[i + 3] << 8);
+      const laneNP = laneN0 * PRIME32_2 + ((laneN1 * PRIME32_2) << 16);
+      let acc = (accN[lane] + laneNP) & 0xffffffff;
+      acc = (acc << 13) | (acc >>> 19);
+      const acc0 = acc & 0xffff;
+      const acc1 = acc >>> 16;
+      accN[lane] = (acc0 * PRIME32_1 + ((acc1 * PRIME32_1) << 16)) & 0xffffffff;
+      lane = (lane + 1) & 0x3;
+    }
+
+    /*
+      Step 3. Accumulator convergence
+      All 4 lane accumulators from previous steps are merged to produce a
+      single remaining accumulator
+      of same width (32-bit). The associated formula is as follows :
+      ```
+      acc = (acc1 <<< 1) + (acc2 <<< 7) + (acc3 <<< 12) + (acc4 <<< 18);
+      ```
+    */
+    acc =
+      (((accN[0] << 1) | (accN[0] >>> 31)) +
+        ((accN[1] << 7) | (accN[1] >>> 25)) +
+        ((accN[2] << 12) | (accN[2] >>> 20)) +
+        ((accN[3] << 18) | (accN[3] >>> 14))) &
+      0xffffffff;
+  }
+
+  /*
+    Step 4. Add input length
+    The input total length is presumed known at this stage.
+    This step is just about adding the length to
+    accumulator, so that it participates to final mixing.
+    ```
+    acc = acc + (u32)inputLength;
+    ```
+  */
+  acc = (acc + buffer.length) & 0xffffffff;
+
+  /*
+    Step 5. Consume remaining input
+    There may be up to 15 bytes remaining to consume from the input.
+    The final stage will digest them according
+    to following pseudo-code :
+    ```
+    while (remainingLength >= 4) {
+        lane = read_32bit_little_endian(input_ptr);
+        acc = acc + lane * PRIME32_3;
+        acc = (acc <<< 17) * PRIME32_4;
+        input_ptr += 4; remainingLength -= 4;
+    }
+    ```
+    This process ensures that all input bytes are present in the final mix.
+  */
+
+  const limit = buffer.length - 4;
+  for (; offset <= limit; offset += 4) {
+    const i = offset;
+    const laneN0 = b[i + 0] + (b[i + 1] << 8);
+    const laneN1 = b[i + 2] + (b[i + 3] << 8);
+    const laneP = laneN0 * PRIME32_3 + ((laneN1 * PRIME32_3) << 16);
+    acc = (acc + laneP) & 0xffffffff;
+    acc = (acc << 17) | (acc >>> 15);
+    acc =
+      ((acc & 0xffff) * PRIME32_4 + (((acc >>> 16) * PRIME32_4) << 16)) &
+      0xffffffff;
+  }
+
+  /*
+        ```
+        while (remainingLength >= 1) {
+            lane = read_byte(input_ptr);
+            acc = acc + lane * PRIME32_5;
+            acc = (acc <<< 11) * PRIME32_1;
+            input_ptr += 1; remainingLength -= 1;
+        }
+        ```
+    */
+
+  for (; offset < b.length; ++offset) {
+    const lane = b[offset];
+    acc += lane * PRIME32_5;
+    acc = (acc << 11) | (acc >>> 21);
+    acc =
+      ((acc & 0xffff) * PRIME32_1 + (((acc >>> 16) * PRIME32_1) << 16)) &
+      0xffffffff;
+  }
+
+  /*
+        Step 6. Final mix (avalanche)
+        The final mix ensures that all input bits have a chance to impact any bit in
+        the output digest, resulting in an unbiased distribution. This is also called
+        avalanche effect.
+        ```
+        acc = acc xor (acc >> 15);
+        acc = acc * PRIME32_2;
+        acc = acc xor (acc >> 13);
+        acc = acc * PRIME32_3;
+        acc = acc xor (acc >> 16);
+        ```
+    */
+
+  acc ^= acc >>> 15;
+  acc =
+    (((acc & 0xffff) * PRIME32_2) & 0xffffffff) +
+    (((acc >>> 16) * PRIME32_2) << 16);
+  acc ^= acc >>> 13;
+  acc =
+    (((acc & 0xffff) * PRIME32_3) & 0xffffffff) +
+    (((acc >>> 16) * PRIME32_3) << 16);
+  acc ^= acc >>> 16;
+
+  // turn any negatives back into a positive number;
+  return acc < 0 ? acc + 4294967296 : acc;
+}