diff --git a/packages/integrations/node/CHANGELOG.md b/packages/integrations/node/CHANGELOG.md
index 01e61307f9..95b8e8ad18 100644
--- a/packages/integrations/node/CHANGELOG.md
+++ b/packages/integrations/node/CHANGELOG.md
@@ -39,6 +39,15 @@
 - Updated dependencies [[`1eae2e3f7`](https://github.com/withastro/astro/commit/1eae2e3f7d693c9dfe91c8ccfbe606d32bf2fb81), [`76ddef19c`](https://github.com/withastro/astro/commit/76ddef19ccab6e5f7d3a5740cd41acf10e334b38), [`9b4f70a62`](https://github.com/withastro/astro/commit/9b4f70a629f55e461759ba46f68af7097a2e9215), [`3fdf509b2`](https://github.com/withastro/astro/commit/3fdf509b2731a9b2f972d89291e57cf78d62c769), [`2f951cd40`](https://github.com/withastro/astro/commit/2f951cd403dfcc2c3ca6aae618ae3e1409516e32), [`c022a4217`](https://github.com/withastro/astro/commit/c022a4217a805d223c1494e9eda4e48bbf810388), [`67becaa58`](https://github.com/withastro/astro/commit/67becaa580b8f787df58de66b7008b7098f1209c), [`bc37331d8`](https://github.com/withastro/astro/commit/bc37331d8154e3e95a8df9131e4e014e78a7a9e7), [`dfc2d93e3`](https://github.com/withastro/astro/commit/dfc2d93e3c645995379358fabbdfa9aab99f43d8), [`3dc1ca2fa`](https://github.com/withastro/astro/commit/3dc1ca2fac8d9965cc5085a5d09e72ed87b4281a), [`1be84dfee`](https://github.com/withastro/astro/commit/1be84dfee3ce8e6f5cc624f99aec4e980f6fde37), [`35f01df79`](https://github.com/withastro/astro/commit/35f01df797d23315f2bee2fc3fd795adb0559c58), [`3fdf509b2`](https://github.com/withastro/astro/commit/3fdf509b2731a9b2f972d89291e57cf78d62c769), [`78de801f2`](https://github.com/withastro/astro/commit/78de801f21fd4ca1653950027d953bf08614566b), [`59d6e569f`](https://github.com/withastro/astro/commit/59d6e569f63e175c97e82e94aa7974febfb76f7c), [`7723c4cc9`](https://github.com/withastro/astro/commit/7723c4cc93298c2e6530e55da7afda048f22cf81), [`fb5cd6b56`](https://github.com/withastro/astro/commit/fb5cd6b56dc27a71366ed5e1ab8bfe9b8f96bac5), [`631b9c410`](https://github.com/withastro/astro/commit/631b9c410d5d66fa384674027ba95d69ebb5063f)]:
   - astro@3.0.0-beta.0
 
+## 5.3.4
+
+### Patch Changes
+
+- [#8084](https://github.com/withastro/astro/pull/8084) [`560e45924`](https://github.com/withastro/astro/commit/560e45924622141206ff5b47d134cb343d6d2a71) Thanks [@hbgl](https://github.com/hbgl)! - Stream request body instead of buffering it in memory.
+
+- Updated dependencies [[`c19987df0`](https://github.com/withastro/astro/commit/c19987df0be3520cf774476cea270c03edd08354), [`560e45924`](https://github.com/withastro/astro/commit/560e45924622141206ff5b47d134cb343d6d2a71), [`afc45af20`](https://github.com/withastro/astro/commit/afc45af2022f7c43fbb6c5c04983695f3819e47e), [`d1f7143f9`](https://github.com/withastro/astro/commit/d1f7143f9caf2ffa0e87cc55c0e05339d3501db3), [`3e46634fd`](https://github.com/withastro/astro/commit/3e46634fd540e5b967d2e5c9abd6235452cee2f2), [`a12027b6a`](https://github.com/withastro/astro/commit/a12027b6af411be39700919ca47e240a335e9887)]:
+  - astro@2.10.8
+
 ## 5.3.3
 
 ### Patch Changes
diff --git a/packages/integrations/node/package.json b/packages/integrations/node/package.json
index 999ce294ac..c3ef496377 100644
--- a/packages/integrations/node/package.json
+++ b/packages/integrations/node/package.json
@@ -48,6 +48,7 @@
     "chai": "^4.3.7",
     "cheerio": "1.0.0-rc.12",
     "mocha": "^9.2.2",
-    "node-mocks-http": "^1.12.2"
+    "node-mocks-http": "^1.13.0",
+    "undici": "^5.22.1"
   }
 }
diff --git a/packages/integrations/node/test/api-route.test.js b/packages/integrations/node/test/api-route.test.js
index 7fbd957763..c830eee2d6 100644
--- a/packages/integrations/node/test/api-route.test.js
+++ b/packages/integrations/node/test/api-route.test.js
@@ -1,6 +1,7 @@
 import nodejs from '../dist/index.js';
 import { loadFixture, createRequestAndResponse } from './test-utils.js';
 import { expect } from 'chai';
+import crypto from 'node:crypto';
 
 describe('API routes', () => {
 	/** @type {import('./test-utils').Fixture} */
@@ -22,9 +23,11 @@ describe('API routes', () => {
 			url: '/recipes',
 		});
 
-		handler(req, res);
+		req.once('async_iterator', () => {
+			req.send(JSON.stringify({ id: 2 }));
+		});
 
-		req.send(JSON.stringify({ id: 2 }));
+		handler(req, res);
 
 		let [buffer] = await done;
 
@@ -43,11 +46,47 @@ describe('API routes', () => {
 			url: '/binary',
 		});
 
+		req.once('async_iterator', () => {
+			req.send(Buffer.from(new Uint8Array([1, 2, 3, 4, 5])));
+		});
+
 		handler(req, res);
-		req.send(Buffer.from(new Uint8Array([1, 2, 3, 4, 5])));
 
 		let [out] = await done;
 		let arr = Array.from(new Uint8Array(out.buffer));
 		expect(arr).to.deep.equal([5, 4, 3, 2, 1]);
 	});
+
+	it('Can post large binary data', async () => {
+		const { handler } = await import('./fixtures/api-route/dist/server/entry.mjs');
+
+		let { req, res, done } = createRequestAndResponse({
+			method: 'POST',
+			url: '/hash',
+		});
+
+		handler(req, res);
+
+		let expectedDigest = null;
+		req.once('async_iterator', () => {
+			// Send 256MB of garbage data in 256KB chunks. This should be fast (< 1sec).
+			let remainingBytes = 256 * 1024 * 1024;
+			const chunkSize = 256 * 1024;
+
+			const hash = crypto.createHash('sha256');
+			while (remainingBytes > 0) {
+				const size = Math.min(remainingBytes, chunkSize);
+				const chunk = Buffer.alloc(size, Math.floor(Math.random() * 256));
+				hash.update(chunk);
+				req.emit('data', chunk);
+				remainingBytes -= size;
+			}
+
+			req.emit('end');
+			expectedDigest = hash.digest();
+		});
+
+		let [out] = await done;
+		expect(new Uint8Array(out.buffer)).to.deep.equal(expectedDigest);
+	});
 });
diff --git a/packages/integrations/node/test/fixtures/api-route/src/pages/hash.ts b/packages/integrations/node/test/fixtures/api-route/src/pages/hash.ts
new file mode 100644
index 0000000000..fbf44c5478
--- /dev/null
+++ b/packages/integrations/node/test/fixtures/api-route/src/pages/hash.ts
@@ -0,0 +1,16 @@
+import crypto from 'node:crypto';
+
+export async function post({ request }: { request: Request }) {
+	const hash = crypto.createHash('sha256');
+
+    const iterable = request.body as unknown as AsyncIterable<Uint8Array>;
+    for await (const chunk of iterable) {
+        hash.update(chunk);
+    }
+
+	return new Response(hash.digest(), {
+		headers: {
+			'Content-Type': 'application/octet-stream'
+		}
+	});
+}
diff --git a/packages/integrations/node/test/fixtures/prerender-404/package.json b/packages/integrations/node/test/fixtures/prerender-404-500/package.json
similarity index 67%
rename from packages/integrations/node/test/fixtures/prerender-404/package.json
rename to packages/integrations/node/test/fixtures/prerender-404-500/package.json
index dfd109c914..f962fe991e 100644
--- a/packages/integrations/node/test/fixtures/prerender-404/package.json
+++ b/packages/integrations/node/test/fixtures/prerender-404-500/package.json
@@ -1,7 +1,8 @@
 {
-  "name": "@test/nodejs-prerender-404",
+  "name": "@test/nodejs-prerender-404-500",
   "version": "0.0.0",
   "private": true,
+  "type": "module",
   "dependencies": {
     "astro": "workspace:*",
     "@astrojs/node": "workspace:*"
diff --git a/packages/integrations/node/test/fixtures/prerender-404-500/src/external-stylesheet.css b/packages/integrations/node/test/fixtures/prerender-404-500/src/external-stylesheet.css
new file mode 100644
index 0000000000..5f331948a6
--- /dev/null
+++ b/packages/integrations/node/test/fixtures/prerender-404-500/src/external-stylesheet.css
@@ -0,0 +1,3 @@
+body {
+    background-color: ivory;
+}
diff --git a/packages/integrations/node/test/fixtures/prerender-404-500/src/nondeterminism-404.ts b/packages/integrations/node/test/fixtures/prerender-404-500/src/nondeterminism-404.ts
new file mode 100644
index 0000000000..1795c26b07
--- /dev/null
+++ b/packages/integrations/node/test/fixtures/prerender-404-500/src/nondeterminism-404.ts
@@ -0,0 +1,17 @@
+// This module is only used by the prerendered 404.astro.
+// It exhibits different behavior if it's called more than once,
+// which is detected by a test and interpreted as a failure.
+
+let usedOnce = false
+let dynamicMessage = "Page was not prerendered"
+
+export default function () {
+    if (usedOnce === false) {
+        usedOnce = true
+        return "Page does not exist"
+    }
+    
+    dynamicMessage += "+"
+    
+    return dynamicMessage
+}
diff --git a/packages/integrations/node/test/fixtures/prerender-404-500/src/nondeterminism-500.ts b/packages/integrations/node/test/fixtures/prerender-404-500/src/nondeterminism-500.ts
new file mode 100644
index 0000000000..8f8024a608
--- /dev/null
+++ b/packages/integrations/node/test/fixtures/prerender-404-500/src/nondeterminism-500.ts
@@ -0,0 +1,17 @@
+// This module is only used by the prerendered 500.astro.
+// It exhibits different behavior if it's called more than once,
+// which is detected by a test and interpreted as a failure.
+
+let usedOnce = false
+let dynamicMessage = "Page was not prerendered"
+
+export default function () {
+    if (usedOnce === false) {
+        usedOnce = true
+        return "Something went wrong"
+    }
+    
+    dynamicMessage += "+"
+    
+    return dynamicMessage
+}
diff --git a/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/404.astro b/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/404.astro
new file mode 100644
index 0000000000..37fd1c1d39
--- /dev/null
+++ b/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/404.astro
@@ -0,0 +1,5 @@
+---
+import message from "../nondeterminism-404"
+export const prerender = true;
+---
+{message()}
diff --git a/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/500.astro b/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/500.astro
new file mode 100644
index 0000000000..ef91ad0ffa
--- /dev/null
+++ b/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/500.astro
@@ -0,0 +1,6 @@
+---
+import "../external-stylesheet.css"
+import message from "../nondeterminism-500"
+export const prerender = true
+---
+<h1>{message()}</h1>
diff --git a/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/fivehundred.astro b/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/fivehundred.astro
new file mode 100644
index 0000000000..99d103567d
--- /dev/null
+++ b/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/fivehundred.astro
@@ -0,0 +1,4 @@
+---
+return new Response(null, { status: 500 })
+---
+<p>This html will not be served</p>
diff --git a/packages/integrations/node/test/fixtures/prerender-404/src/pages/static.astro b/packages/integrations/node/test/fixtures/prerender-404-500/src/pages/static.astro
similarity index 100%
rename from packages/integrations/node/test/fixtures/prerender-404/src/pages/static.astro
rename to packages/integrations/node/test/fixtures/prerender-404-500/src/pages/static.astro
diff --git a/packages/integrations/node/test/fixtures/prerender-404/src/pages/404.astro b/packages/integrations/node/test/fixtures/prerender-404/src/pages/404.astro
deleted file mode 100644
index 230402bbcc..0000000000
--- a/packages/integrations/node/test/fixtures/prerender-404/src/pages/404.astro
+++ /dev/null
@@ -1,5 +0,0 @@
----
-export const prerender = true;
----
-
-Page does not exist
diff --git a/packages/integrations/node/test/prerender-404.test.js b/packages/integrations/node/test/prerender-404-500.test.js
similarity index 50%
rename from packages/integrations/node/test/prerender-404.test.js
rename to packages/integrations/node/test/prerender-404-500.test.js
index 3a39a94705..8816ebe4c1 100644
--- a/packages/integrations/node/test/prerender-404.test.js
+++ b/packages/integrations/node/test/prerender-404-500.test.js
@@ -9,10 +9,11 @@ import * as cheerio from 'cheerio';
 
 async function load() {
 	const mod = await import(
-		`./fixtures/prerender-404/dist/server/entry.mjs?dropcache=${Date.now()}`
+		`./fixtures/prerender-404-500/dist/server/entry.mjs?dropcache=${Date.now()}`
 	);
 	return mod;
 }
+
 describe('Prerender 404', () => {
 	/** @type {import('./test-utils').Fixture} */
 	let fixture;
@@ -24,8 +25,12 @@ describe('Prerender 404', () => {
 			process.env.PRERENDER = true;
 
 			fixture = await loadFixture({
+				// inconsequential config that differs between tests
+				// to bust cache and prevent modules and their state
+				// from being reused
+				site: 'https://test.dev/',
 				base: '/some-base',
-				root: './fixtures/prerender-404/',
+				root: './fixtures/prerender-404-500/',
 				output: 'server',
 				adapter: nodejs({ mode: 'standalone' }),
 			});
@@ -51,12 +56,52 @@ describe('Prerender 404', () => {
 		});
 
 		it('Can handle prerendered 404', async () => {
-			const res = await fetch(`http://${server.host}:${server.port}/some-base/missing`);
-			const html = await res.text();
+			const url = `http://${server.host}:${server.port}/some-base/missing`;
+			const res1 = await fetch(url);
+			const res2 = await fetch(url);
+			const res3 = await fetch(url);
+
+			expect(res1.status).to.equal(404);
+			expect(res2.status).to.equal(404);
+			expect(res3.status).to.equal(404);
+
+			const html1 = await res1.text();
+			const html2 = await res2.text();
+			const html3 = await res3.text();
+
+			expect(html1).to.equal(html2);
+			expect(html2).to.equal(html3);
+
+			const $ = cheerio.load(html1);
+
+			expect($('body').text()).to.equal('Page does not exist');
+		});
+
+		it(' Can handle prerendered 500 called indirectly', async () => {
+			const url = `http://${server.host}:${server.port}/some-base/fivehundred`;
+			const response1 = await fetch(url);
+			const response2 = await fetch(url);
+			const response3 = await fetch(url);
+
+			expect(response1.status).to.equal(500);
+
+			const html1 = await response1.text();
+			const html2 = await response2.text();
+			const html3 = await response3.text();
+
+			expect(html1).to.contain('Something went wrong');
+
+			expect(html1).to.equal(html2);
+			expect(html2).to.equal(html3);
+		});
+
+		it('prerendered 500 page includes expected styles', async () => {
+			const response = await fetch(`http://${server.host}:${server.port}/some-base/fivehundred`);
+			const html = await response.text();
 			const $ = cheerio.load(html);
 
-			expect(res.status).to.equal(404);
-			expect($('body').text()).to.equal('Page does not exist');
+			// length will be 0 if the stylesheet does not get included
+			expect($('link[rel=stylesheet]')).to.have.a.lengthOf(1);
 		});
 	});
 
@@ -66,12 +111,16 @@ describe('Prerender 404', () => {
 			process.env.PRERENDER = true;
 
 			fixture = await loadFixture({
-				root: './fixtures/prerender-404/',
+				// inconsequential config that differs between tests
+				// to bust cache and prevent modules and their state
+				// from being reused
+				site: 'https://test.info/',
+				root: './fixtures/prerender-404-500/',
 				output: 'server',
 				adapter: nodejs({ mode: 'standalone' }),
 			});
 			await fixture.build();
-			const { startServer } = await await load();
+			const { startServer } = await load();
 			let res = startServer();
 			server = res.server;
 		});
@@ -92,11 +141,24 @@ describe('Prerender 404', () => {
 		});
 
 		it('Can handle prerendered 404', async () => {
-			const res = await fetch(`http://${server.host}:${server.port}/missing`);
-			const html = await res.text();
-			const $ = cheerio.load(html);
+			const url = `http://${server.host}:${server.port}/some-base/missing`;
+			const res1 = await fetch(url);
+			const res2 = await fetch(url);
+			const res3 = await fetch(url);
+
+			expect(res1.status).to.equal(404);
+			expect(res2.status).to.equal(404);
+			expect(res3.status).to.equal(404);
+
+			const html1 = await res1.text();
+			const html2 = await res2.text();
+			const html3 = await res3.text();
+
+			expect(html1).to.equal(html2);
+			expect(html2).to.equal(html3);
+
+			const $ = cheerio.load(html1);
 
-			expect(res.status).to.equal(404);
 			expect($('body').text()).to.equal('Page does not exist');
 		});
 	});
@@ -112,13 +174,17 @@ describe('Hybrid 404', () => {
 			process.env.ASTRO_NODE_AUTOSTART = 'disabled';
 			process.env.PRERENDER = false;
 			fixture = await loadFixture({
+				// inconsequential config that differs between tests
+				// to bust cache and prevent modules and their state
+				// from being reused
+				site: 'https://test.com/',
 				base: '/some-base',
-				root: './fixtures/prerender-404/',
+				root: './fixtures/prerender-404-500/',
 				output: 'hybrid',
 				adapter: nodejs({ mode: 'standalone' }),
 			});
 			await fixture.build();
-			const { startServer } = await await load();
+			const { startServer } = await load();
 			let res = startServer();
 			server = res.server;
 		});
@@ -139,11 +205,24 @@ describe('Hybrid 404', () => {
 		});
 
 		it('Can handle prerendered 404', async () => {
-			const res = await fetch(`http://${server.host}:${server.port}/some-base/missing`);
-			const html = await res.text();
-			const $ = cheerio.load(html);
+			const url = `http://${server.host}:${server.port}/some-base/missing`;
+			const res1 = await fetch(url);
+			const res2 = await fetch(url);
+			const res3 = await fetch(url);
+
+			expect(res1.status).to.equal(404);
+			expect(res2.status).to.equal(404);
+			expect(res3.status).to.equal(404);
+
+			const html1 = await res1.text();
+			const html2 = await res2.text();
+			const html3 = await res3.text();
+
+			expect(html1).to.equal(html2);
+			expect(html2).to.equal(html3);
+
+			const $ = cheerio.load(html1);
 
-			expect(res.status).to.equal(404);
 			expect($('body').text()).to.equal('Page does not exist');
 		});
 	});
@@ -153,12 +232,16 @@ describe('Hybrid 404', () => {
 			process.env.ASTRO_NODE_AUTOSTART = 'disabled';
 			process.env.PRERENDER = false;
 			fixture = await loadFixture({
-				root: './fixtures/prerender-404/',
+				// inconsequential config that differs between tests
+				// to bust cache and prevent modules and their state
+				// from being reused
+				site: 'https://test.net/',
+				root: './fixtures/prerender-404-500/',
 				output: 'hybrid',
 				adapter: nodejs({ mode: 'standalone' }),
 			});
 			await fixture.build();
-			const { startServer } = await await load();
+			const { startServer } = await load();
 			let res = startServer();
 			server = res.server;
 		});
@@ -179,11 +262,24 @@ describe('Hybrid 404', () => {
 		});
 
 		it('Can handle prerendered 404', async () => {
-			const res = await fetch(`http://${server.host}:${server.port}/missing`);
-			const html = await res.text();
-			const $ = cheerio.load(html);
+			const url = `http://${server.host}:${server.port}/missing`;
+			const res1 = await fetch(url);
+			const res2 = await fetch(url);
+			const res3 = await fetch(url);
+
+			expect(res1.status).to.equal(404);
+			expect(res2.status).to.equal(404);
+			expect(res3.status).to.equal(404);
+
+			const html1 = await res1.text();
+			const html2 = await res2.text();
+			const html3 = await res3.text();
+
+			expect(html1).to.equal(html2);
+			expect(html2).to.equal(html3);
+
+			const $ = cheerio.load(html1);
 
-			expect(res.status).to.equal(404);
 			expect($('body').text()).to.equal('Page does not exist');
 		});
 	});