[Segment Cache] Evict client cache on revalidate

[acdlite]

This implements evicting the client cache when a Server Action calls revalidatePath or revalidateTag.

Similar to the old prefetching implementation, it works by clearing the entire client cache, as opposed to only the affected path or tags. There are more changes needed on the server before we can support granular cache eviction. This just gets us to parity with the status quo.

[ijjk]

Tests Passed

[acdlite]

The change in this file is to move when the intercepted request gets forwarded to the server — immediately, instead of at the end of the act scope. That way the test can observe/handle the request within the act scope, like I do here:

next.js/test/e2e/app-dir/segment-cache/revalidation/segment-cache-revalidation.test.ts

Lines 86 to 101 in 9e58505

	await act(
	async () => {
	// Reveal the link
	await linkVisibilityToggle.click()
	// Because the corresponding entry was evicted from the cache, this
	// should trigger a new prefetch.
	await TestLog.waitFor(['REQUEST: random-greeting'])
	// Fulfill the prefetch request.
	await pendingRequests.get('random-greeting').resolve('yo!')
	},
	{
	includes: 'yo!',
	}
	)

It does not affect the timing of when the response reaches the client — that still always happens at the end.

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
buildDuration	18s	15.5s	N/A
buildDurationCached	14.7s	12.3s	N/A
nodeModulesSize	418 MB	418 MB	⚠️ +31 kB
nextStartRea..uration (ms)	398ms	401ms	N/A

Client Bundles (main, webpack)

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
5306-HASH.js gzip	53.9 kB	54 kB	N/A
8276.HASH.js gzip	169 B	168 B	N/A
8377-HASH.js gzip	5.44 kB	5.44 kB	N/A
bccd1874-HASH.js gzip	52.9 kB	52.9 kB	N/A
framework-HASH.js gzip	57.5 kB	57.5 kB	N/A
main-app-HASH.js gzip	239 B	242 B	N/A
main-HASH.js gzip	34.2 kB	34.2 kB	N/A
webpack-HASH.js gzip	1.71 kB	1.71 kB	N/A
Overall change	0 B	0 B	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Overall change	39.4 kB	39.4 kB	✓

Client Pages

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
_app-HASH.js gzip	193 B	193 B	✓
_error-HASH.js gzip	193 B	193 B	✓
amp-HASH.js gzip	512 B	510 B	N/A
css-HASH.js gzip	343 B	342 B	N/A
dynamic-HASH.js gzip	1.84 kB	1.84 kB	✓
edge-ssr-HASH.js gzip	265 B	265 B	✓
head-HASH.js gzip	363 B	362 B	N/A
hooks-HASH.js gzip	393 B	392 B	N/A
image-HASH.js gzip	4.57 kB	4.57 kB	N/A
index-HASH.js gzip	268 B	268 B	✓
link-HASH.js gzip	2.35 kB	2.34 kB	N/A
routerDirect..HASH.js gzip	328 B	328 B	✓
script-HASH.js gzip	397 B	397 B	✓
withRouter-HASH.js gzip	323 B	326 B	N/A
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Overall change	3.59 kB	3.59 kB	✓

Client Build Manifests

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
_buildManifest.js gzip	749 B	747 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
index.html gzip	524 B	523 B	N/A
link.html gzip	539 B	538 B	N/A
withRouter.html gzip	520 B	520 B	✓
Overall change	520 B	520 B	✓

Edge SSR bundle Size

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
edge-ssr.js gzip	129 kB	129 kB	N/A
page.js gzip	208 kB	208 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
middleware-b..fest.js gzip	670 B	666 B	N/A
middleware-r..fest.js gzip	155 B	156 B	N/A
middleware.js gzip	31.3 kB	31.3 kB	N/A
edge-runtime..pack.js gzip	844 B	844 B	✓
Overall change	844 B	844 B	✓

Next Runtimes

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
274-experime...dev.js gzip	322 B	322 B	✓
274.runtime.dev.js gzip	314 B	314 B	✓
app-page-exp...dev.js gzip	374 kB	374 kB	N/A
app-page-exp..prod.js gzip	130 kB	130 kB	✓
app-page-tur..prod.js gzip	143 kB	143 kB	✓
app-page-tur..prod.js gzip	139 kB	139 kB	✓
app-page.run...dev.js gzip	362 kB	362 kB	N/A
app-page.run..prod.js gzip	126 kB	126 kB	✓
app-route-ex...dev.js gzip	37.6 kB	37.6 kB	✓
app-route-ex..prod.js gzip	25.6 kB	25.6 kB	✓
app-route-tu..prod.js gzip	25.6 kB	25.6 kB	✓
app-route-tu..prod.js gzip	25.4 kB	25.4 kB	✓
app-route.ru...dev.js gzip	39.2 kB	39.2 kB	✓
app-route.ru..prod.js gzip	25.4 kB	25.4 kB	✓
pages-api-tu..prod.js gzip	9.69 kB	9.69 kB	✓
pages-api.ru...dev.js gzip	11.6 kB	11.6 kB	✓
pages-api.ru..prod.js gzip	9.68 kB	9.68 kB	✓
pages-turbo...prod.js gzip	21.7 kB	21.7 kB	✓
pages.runtim...dev.js gzip	27.5 kB	27.5 kB	✓
pages.runtim..prod.js gzip	21.7 kB	21.7 kB	✓
server.runti..prod.js gzip	916 kB	916 kB	✓
Overall change	1.73 MB	1.73 MB	✓

build cache Overall increase ⚠️

	vercel/next.js canary	acdlite/next.js segment-cache-evict-on-revalidate	Change
0.pack gzip	2.09 MB	2.09 MB	⚠️ +397 B
index.pack gzip	75.5 kB	74.9 kB	N/A
Overall change	2.09 MB	2.09 MB	⚠️ +397 B

Diff details

Diff for 5306-HASH.js

Diff too large to display

Diff for main-HASH.js

Diff too large to display

Diff for app-page-exp..ntime.dev.js

Diff too large to display

Diff for app-page.runtime.dev.js

Diff too large to display

Commit: e2146e8