Reduce Turbopack cache size with per-family compression by lukesandberg · Pull Request #97714 · vercel/next.js

lukesandberg · 2026-08-21T21:00:25Z

What?

Adds per-family compression configuration to turbo-persistence and configures the Turbopack filesystem cache according to each keyspace's access pattern:

Family	Compression	Reason
Infra	LZ4	Preserve the existing fast encode/decode path
TaskMeta	LZ4	Avoid HC encode CPU for a marginal whole-cache size gain
TaskCache	LZ4	Values are inline and no value blocks compressed in measured caches
TaskData	zstd level 3	Prioritize the dominant disk-size opportunity

Each meta file records the family's compression algorithm as one explicit byte, which is validated against FamilyConfig when the database opens. SST block and blob layouts remain unchanged.

Why?

LZ4 decode performance is important for cache query latency, but using one codec for every keyspace leaves a substantial disk-size opportunity in TaskData. The final split keeps Infra, TaskMeta, and TaskCache on the existing ordinary LZ4 path, while TaskData spends modestly more CPU to reduce persistent cache size.

LZ4 HC4 was evaluated and removed before finalizing: across three real caches it made TaskMeta compression 4.24× slower for only 1.51% total cache-directory savings. Infra and TaskCache made no compression calls. Removing HC4 does not affect reads because HC4 and ordinary LZ4 use the same decoder.

How?

Real (tiny) Next.js cache A/B test

Final results after removing HC4, using three cold and five warm runs per workload:

Workload	Cache size	Cold/write	Warm/read
`test/e2e/filesystem-cache`	-19.45%	+2.38%	+3.98%
`test/e2e/app-dir/app-rendering`	-18.87%	-0.81%	-2.69%
`test/e2e/app-dir/client-reference-chunking`	-19.84%	-0.80%	-3.70%
Combined medians	-19.41% (96.79 → 78.00 MiB)	+0.23%	-1.19%

The mixed warm result on the smallest fixture and apparent improvements elsewhere are treated as noise; combined measurements show no material write/read regression.

Temporary crate benchmark instrumentation

To demonstrate the cost of the retained codecs, temporary write/read benchmarks applied each codec to identical synthetic data. The benchmark code is not included in the final patch.

Codec	Synthetic write	vs LZ4	Uncached get	Cached get	DB size
LZ4	38.173 ms	baseline	7.3004 µs	10.735 µs	21.59 MiB
zstd3	57.790 ms	+51.4%	6.2460 µs	9.5323 µs	21.49 MiB

LZ4 HC4 was also evaluated during development: the same write benchmark took 256.31 ms (+571.7% vs LZ4), which motivated dropping it after the real-cache family breakdown showed little total-size benefit.

Native binary size

For Linux x64 GNU, using build-native-release followed by the release pipeline's strip -x:

base: 103,140,384 bytes
final PR: 103,663,432 bytes
delta: +523,048 bytes (+0.507%)

Removing HC4 saved 73,248 installed bytes versus the earlier PR state; replacing bincode framing with the explicit codec byte saved another 18,048 bytes. Together those review simplifications removed 91,296 installed bytes (24,420 gzip bytes) from the earlier branch state.

Vercel Site real application

These measurements were captured before HC4 was removed. The final TaskData-only configuration should give up a small amount of size reduction and improve write CPU; the final small-app A/B above measures that configuration directly.

Size

2.9G canary
2.2G this PR

a 25% savings!!!

Performance

Cold build (n=5), warm build (n=3), medians:

Scenario	Metric	Canary	Compression	Δ
Cold	wall (s)	71.28	72.86	+2.2%
	user (s)	555.21	570.23	+2.7%
	sys (s)	94.49	95.00	+0.5%
	maxRSS (GB)	17.95	17.98	+0.2%
Warm	wall (s)	15.00	15.32	+2.1%
	user (s)	7.59	9.98	+31%
	sys (s)	12.79	12.87	+0.6%
	maxRSS (GB)	3.78	3.86	+2.0%

maxRSS converted at 1 GB = 2^30 bytes.

Looking at tracing data i see in a cold build persist span went from 5.06s duration using 63s cpu time to 6.04s using 73s cpu time, a ~20% regression. Which explains the cpu regression and the time progression.

Because the time regression is in the persist span during shutdown the added latency is somewhat hidden.

Of course we also see a small wall/user time regression in warm builds due to the extra decompression costs for zstd.

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

github-actions · 2026-08-21T21:00:50Z

Tests Passed

Commit: c55ba19

github-actions · 2026-08-21T21:00:56Z

Stats from current PR

🔴 3 regressions, 4 improvements

Metric	Canary	PR	Change	Trend
Turbo Build Time	5.663s	6.477s	🔴 +814ms (+14%)	▁▁▂██
Turbo Build Time (cached)	2.946s	3.123s	🔴 +177ms (+6%)	▁▁▁██
Webpack Build Time	24.030s	24.641s	🔴 +611ms (+3%)	▁▂▁█▁
node_modules Size	558 MB	558 MB	🟢 282 kB (0%)	█████
Webpack Build Time (cached)	24.778s	23.956s	🟢 822ms (-3%)	▁▂▁█▁
Webpack Cold (First Request)	3.517s	3.410s	🟢 107ms (-3%)	▁▂▁█▁
Webpack Warm (First Request)	3.636s	3.356s	🟢 280ms (-8%)	▁▂▁█▁

📊 All Metrics

📖 Metrics Glossary

Dev Server Metrics:

Listen = TCP port starts accepting connections
First Request = HTTP server returns successful response
Cold = Fresh build (no cache)
Warm = With cached build artifacts

Build Metrics:

Fresh = Clean build (no .next directory)
Cached = With existing .next directory

Change Thresholds:

Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
Size: Changes < 1KB AND < 1% are insignificant
All other changes are flagged to catch regressions

⚡ Dev Server

Metric	Canary	PR	Change	Trend
Cold (Listen)	813ms	813ms	✓	▂▂▂██
Cold (Ready in log)	796ms	806ms	✓	▁▁▁██
Cold (First Request)	1.254s	1.305s	✓	▁▁▁██
Warm (Listen)	814ms	812ms	✓	▁▂▂██
Warm (Ready in log)	808ms	798ms	✓	▁▁▁██
Warm (First Request)	1.311s	1.258s	✓	▁▁▁██

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	823ms	812ms	✓	▁▁▁█▁
Cold (Ready in log)	824ms	796ms	✓	▁▂▁█▁
Cold (First Request)	3.517s	3.410s	🟢 107ms (-3%)	▁▂▁█▁
Warm (Listen)	866ms	813ms	✓	▁▁▁▇▁
Warm (Ready in log)	851ms	796ms	✓	▁▂▁█▁
Warm (First Request)	3.636s	3.356s	🟢 280ms (-8%)	▁▂▁█▁

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	5.663s	6.477s	🔴 +814ms (+14%)	▁▁▂██
Cached Build	2.946s	3.123s	🔴 +177ms (+6%)	▁▁▁██

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	24.030s	24.641s	🔴 +611ms (+3%)	▁▂▁█▁
Cached Build	24.778s	23.956s	🟢 822ms (-3%)	▁▂▁█▁
node_modules Size	558 MB	558 MB	🟢 282 kB (0%)	█████

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles

	Canary	PR	Change
017_4moyv5m34.js gzip	117 B	117 B	✓
05jocc85-b73_.js gzip	341 B	N/A	-
0cz1d0mv5g_q7.js gzip	39.4 kB	39.4 kB	✓
0e5lgz-xcf6ln.js gzip	273 B	273 B	✓
0enhddgqs2dl-.js gzip	265 B	265 B	✓
0h34mejwa_7pd.js gzip	354 B	354 B	✓
0w853zxni3ro0.js gzip	1.36 kB	N/A	-
13lq2aw3_0bgw.js gzip	3.52 kB	N/A	-
19ll0d77yn0fq.js gzip	71.5 kB	N/A	-
1drifx6-oqf3q.js gzip	5.7 kB	N/A	-
1elt1qium-r2m.css gzip	115 B	115 B	✓
1m5vdnlf0deiv.js gzip	411 B	411 B	✓
1nigpy_mr0xvj.js gzip	339 B	N/A	-
1p0l8mn2wz5f2.js gzip	1.97 kB	N/A	-
1ph_nbsm967ot.js gzip	152 B	N/A	-
1sqoyy39jpgkq.js gzip	121 B	121 B	✓
1tf1phijqlx9j.js gzip	220 B	220 B	✓
2-54v5vj7orwp.js gzip	46.8 kB	N/A	-
2b05_424u1zq-.js gzip	120 B	N/A	-
2ca40xittx95r.js gzip	8.75 kB	N/A	-
2kci0vnt-49o-.js gzip	113 B	113 B	✓
2rtriq9lc6zj-.js gzip	116 B	N/A	-
2sxgl_rcrrn_p.js gzip	399 B	N/A	-
2vt62i17bhbdu.js gzip	2.35 kB	N/A	-
33ykhou7tl-4h.js gzip	7.53 kB	N/A	-
342di-crrg9kq.js gzip	119 B	N/A	-
36hfc2_979aw2.js gzip	119 B	N/A	-
38wfp6jjrrdfm.js gzip	131 B	131 B	✓
3dl1ilk37-30g.js gzip	117 B	N/A	-
3h0us7yy7bd_o.js gzip	13.1 kB	N/A	-
3kvxagoobts7h.js gzip	117 B	N/A	-
3p99hd9vwe6ae.js gzip	13 kB	N/A	-
3r0475panhk6m.js gzip	123 B	N/A	-
3s0i-weykgzrt.js gzip	125 B	N/A	-
3vjosdbddykpw.js gzip	5.88 kB	N/A	-
3wijk2ywqgsv9.js gzip	2.52 kB	N/A	-
3xuguv9lsoqw7.js gzip	65.5 kB	N/A	-
41u5s3oe2-erp.js gzip	2.29 kB	N/A	-
turbopack-0d..9ejy.js gzip	3.74 kB	3.74 kB	✓
02zc7sqlpqxn3.js gzip	N/A	119 B	-
0jwho9fkrb_t3.js gzip	N/A	2.29 kB	-
0longconn5mlm.js gzip	N/A	123 B	-
0p4l3ozbez2cz.js gzip	N/A	2.35 kB	-
0skdm-9rpid8g.js gzip	N/A	117 B	-
0wslrlyk8d3lb.js gzip	N/A	117 B	-
0wv-h56sz83wn.js gzip	N/A	120 B	-
137xup2t69ovc.js gzip	N/A	1.97 kB	-
1fk10s3m1oecx.js gzip	N/A	400 B	-
1g60xde_dv17t.js gzip	N/A	8.79 kB	-
1uzv47btzam64.js gzip	N/A	5.73 kB	-
20qhkyyj2_tla.js gzip	N/A	116 B	-
2imyufe18bsb7.js gzip	N/A	1.36 kB	-
2mr-6hunyw7uo.js gzip	N/A	7.53 kB	-
2nsrcvgnlgkby.js gzip	N/A	3.56 kB	-
2p4n3-8-xixh_.js gzip	N/A	341 B	-
34knadd6wu9qg.js gzip	N/A	119 B	-
39jq2b6t6z6up.js gzip	N/A	339 B	-
3a9a9tvkag_-j.js gzip	N/A	2.52 kB	-
3b4-wgmojlaav.js gzip	N/A	71.7 kB	-
3be8e3ccm9e51.js gzip	N/A	5.91 kB	-
3nhnanx_3z6fp.js gzip	N/A	65.6 kB	-
3skgwg3_u6i_e.js gzip	N/A	13.2 kB	-
3t121tj-h0kbm.js gzip	N/A	125 B	-
3tt4y5c9oeg16.js gzip	N/A	47 kB	-
3wjy00evyxo9u.js gzip	N/A	152 B	-
3y9tus7kb5su0.js gzip	N/A	13.3 kB	-
Total	299 kB	300 kB	⚠️ +962 B

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	1.02 kB	1.02 kB	✓
Total	1.02 kB	1.02 kB	✅ -1 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	846 B	848 B	✓
Total	846 B	848 B	⚠️ +2 B

Build Cache

	Canary	PR	Change
00000001.sst gzip	12 MB	12.3 MB	🔴 +238 kB (+2%)
00000002.sst gzip	13.7 MB	14.8 MB	🔴 +1.02 MB (+7%)
00000003.sst gzip	14.9 MB	16 MB	🔴 +1.05 MB (+7%)
00000004.sst gzip	14.1 MB	12.2 MB	🟢 1.89 MB (-13%)
00000005.sst gzip	2.75 MB	10.2 MB	🔴 +7.42 MB (+270%)
00000006.sst gzip	10.1 MB	2.8 MB	🟢 7.29 MB (-72%)
00000007.sst gzip	59 B	59 B	✓
00000008.meta gzip	89 B	89 B	✓
00000009.meta gzip	297 kB	298 kB	✓
00000010.meta gzip	297 kB	298 kB	✓
00000011.meta gzip	297 kB	298 kB	✓
00000012.sst gzip	52.8 kB	53.6 kB	🔴 +799 B (+2%)
00000013.sst gzip	1.75 MB	1.88 MB	🔴 +129 kB (+7%)
00000014.sst gzip	59 B	59 B	✓
00000015.meta gzip	116 B	116 B	✓
00000016.meta gzip	327 kB	328 kB	✓
00000017.meta gzip	403 kB	408 kB	🔴 +4.52 kB (+1%)
00000018.sst gzip	53.3 kB	54.4 kB	🔴 +1.11 kB (+2%)
00000019.sst gzip	1.38 MB	1.39 MB	🔴 +15.9 kB (+1%)
00000020.sst gzip	59 B	59 B	✓
00000021.meta gzip	116 B	116 B	✓
00000022.meta gzip	327 kB	328 kB	✓
00000023.meta gzip	372 kB	374 kB	✓
00000024.sst gzip	53.5 kB	54.4 kB	🔴 +961 B (+2%)
00000025.sst gzip	1.38 MB	1.39 MB	🔴 +18.2 kB (+1%)
00000026.sst gzip	59 B	59 B	✓
00000027.meta gzip	116 B	116 B	✓
00000028.meta gzip	327 kB	328 kB	✓
00000029.meta gzip	372 kB	374 kB	✓
00000030.sst gzip	52.9 kB	1.39 MB	🔴 +1.34 MB (+2532%)
00000031.sst gzip	1.38 MB	53.6 kB	🟢 1.32 MB (-96%)
00000032.sst gzip	59 B	59 B	✓
00000033.meta gzip	116 B	116 B	✓
00000034.meta gzip	327 kB	328 kB	✓
00000035.meta gzip	372 kB	374 kB	✓
00000036.sst gzip	53.3 kB	54.4 kB	🔴 +1.13 kB (+2%)
00000037.sst gzip	1.38 MB	1.39 MB	🔴 +18.2 kB (+1%)
00000038.sst gzip	59 B	59 B	✓
00000039.meta gzip	116 B	116 B	✓
00000040.meta gzip	327 kB	328 kB	✓
00000041.meta gzip	372 kB	374 kB	✓
CURRENT gzip	94 B	94 B	✓
LOG gzip	669 B	677 B	🔴 +8 B (+1%)
Total	79.6 MB	80.4 MB	⚠️ +762 kB

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
3322-HASH.js gzip	65.7 kB	N/A	-
4191.HASH.js gzip	169 B	N/A	-
9784-HASH.js gzip	5.6 kB	N/A	-
b1ad9f4c-HASH.js gzip	63.5 kB	N/A	-
framework-HASH.js gzip	59.7 kB	59.7 kB	✓
main-app-HASH.js gzip	253 B	252 B	✓
main-HASH.js gzip	39.8 kB	40.2 kB	🔴 +436 B (+1%)
webpack-HASH.js gzip	1.68 kB	1.68 kB	✓
3577.HASH.js gzip	N/A	168 B	-
578-HASH.js gzip	N/A	66.2 kB	-
8590-HASH.js gzip	N/A	5.61 kB	-
9750-HASH.js gzip	N/A	4.68 kB	-
a8984546-HASH.js gzip	N/A	63.5 kB	-
Total	236 kB	242 kB	⚠️ +5.64 kB

Polyfills

	Canary	PR	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Total	39.4 kB	39.4 kB	✓

Pages

	Canary	PR	Change
_app-HASH.js gzip	194 B	193 B	✓
_error-HASH.js gzip	181 B	182 B	✓
css-HASH.js gzip	334 B	331 B	✓
dynamic-HASH.js gzip	1.81 kB	1.81 kB	✓
edge-ssr-HASH.js gzip	255 B	253 B	✓
head-HASH.js gzip	349 B	351 B	✓
hooks-HASH.js gzip	382 B	384 B	✓
image-HASH.js gzip	5.05 kB	582 B	🟢 4.47 kB (-88%)
index-HASH.js gzip	260 B	259 B	✓
link-HASH.js gzip	2.48 kB	2.48 kB	✓
routerDirect..HASH.js gzip	317 B	318 B	✓
script-HASH.js gzip	384 B	386 B	✓
withRouter-HASH.js gzip	316 B	315 B	✓
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Total	12.4 kB	7.96 kB	✅ -4.47 kB

Server

Edge SSR

	Canary	PR	Change
edge-ssr.js gzip	128 kB	129 kB	✓
page.js gzip	293 kB	294 kB	✓
Total	421 kB	423 kB	⚠️ +1.39 kB

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	599 B	617 B	🔴 +18 B (+3%)
middleware-r..fest.js gzip	156 B	156 B	✓
middleware.js gzip	45.7 kB	45.6 kB	✓
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	47.3 kB	47.2 kB	✅ -98 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	699 B	718 B	🔴 +19 B (+3%)
Total	699 B	718 B	⚠️ +19 B

Build Cache

	Canary	PR	Change
0.pack gzip	4.8 MB	4.82 MB	🔴 +16.3 kB (+0%)
index.pack gzip	123 kB	124 kB	✓
index.pack.old gzip	124 kB	124 kB	✓
Total	5.05 MB	5.07 MB	⚠️ +17.4 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	377 kB	375 kB	🟢 2.2 kB (-1%)
app-page-exp..prod.js gzip	207 kB	207 kB	✓
app-page-tur...dev.js gzip	377 kB	375 kB	🟢 2.21 kB (-1%)
app-page-tur..prod.js gzip	207 kB	207 kB	✓
app-page-tur...dev.js gzip	373 kB	371 kB	🟢 2.25 kB (-1%)
app-page-tur..prod.js gzip	205 kB	204 kB	✓
app-page.run...dev.js gzip	373 kB	371 kB	🟢 2.26 kB (-1%)
app-page.run..prod.js gzip	205 kB	205 kB	✓
app-route-ex...dev.js gzip	82.9 kB	83.3 kB	✓
app-route-ex..prod.js gzip	55.8 kB	56.3 kB	✓
app-route-tu...dev.js gzip	82.9 kB	83.4 kB	✓
app-route-tu..prod.js gzip	55.9 kB	56.3 kB	✓
app-route-tu...dev.js gzip	82.5 kB	82.9 kB	✓
app-route-tu..prod.js gzip	55.6 kB	56.1 kB	✓
app-route.ru...dev.js gzip	82.4 kB	82.9 kB	✓
app-route.ru..prod.js gzip	55.6 kB	56.1 kB	✓
dev-validati...dev.js gzip	139 kB	134 kB	🟢 4.84 kB (-3%)
dev-validati...dev.js gzip	139 kB	134 kB	🟢 4.84 kB (-3%)
dev-validati...dev.js gzip	137 kB	132 kB	🟢 4.89 kB (-4%)
dev-validati...dev.js gzip	137 kB	132 kB	🟢 4.88 kB (-4%)
dist_client_...dev.js gzip	324 B	324 B	✓
dist_client_...dev.js gzip	326 B	326 B	✓
dist_client_...dev.js gzip	318 B	318 B	✓
dist_client_...dev.js gzip	317 B	317 B	✓
pages-api-tu...dev.js gzip	46.3 kB	46.5 kB	✓
pages-api-tu..prod.js gzip	34.3 kB	34.7 kB	🔴 +352 B (+1%)
pages-api.ru...dev.js gzip	46.2 kB	46.5 kB	✓
pages-api.ru..prod.js gzip	34.3 kB	34.6 kB	🔴 +347 B (+1%)
pages-turbo....dev.js gzip	54.7 kB	55.3 kB	🔴 +614 B (+1%)
pages-turbo...prod.js gzip	39.7 kB	40.2 kB	🔴 +538 B (+1%)
pages.runtim...dev.js gzip	54.7 kB	55.3 kB	🔴 +592 B (+1%)
pages.runtim..prod.js gzip	39.6 kB	40.2 kB	🔴 +537 B (+1%)
server.runti..prod.js gzip	66 kB	66.7 kB	✓
use-cache-pr...dev.js gzip	73.4 kB	72.8 kB	✓
use-cache-pr...dev.js gzip	73.4 kB	72.8 kB	✓
use-cache-pr...dev.js gzip	71.7 kB	71 kB	✓
use-cache-pr...dev.js gzip	71.6 kB	71 kB	✓
Total	4.14 MB	4.11 MB	✅ -24.6 kB

📝 Changed Files (33 files)

Files with changes:

app-page-exp..ntime.dev.js
app-page-exp..time.prod.js
app-page-tur..ntime.dev.js
app-page-tur..time.prod.js
app-page-tur..ntime.dev.js
app-page-tur..time.prod.js
app-page.runtime.dev.js
app-page.runtime.prod.js
app-route-ex..ntime.dev.js
app-route-ex..time.prod.js
app-route-tu..ntime.dev.js
app-route-tu..time.prod.js
app-route-tu..ntime.dev.js
app-route-tu..time.prod.js
app-route.runtime.dev.js
app-route.ru..time.prod.js
dev-validati..ntime.dev.js
dev-validati..ntime.dev.js
dev-validati..ntime.dev.js
dev-validati..ntime.dev.js
... and 13 more

View diffs

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

failed to diff

app-page-exp..time.prod.js

failed to diff

app-page-tur..ntime.dev.js

failed to diff

app-page-tur..time.prod.js

failed to diff

app-page-tur..ntime.dev.js

failed to diff

app-page-tur..time.prod.js

failed to diff

app-page.runtime.dev.js

failed to diff

app-page.runtime.prod.js

failed to diff

app-route-ex..ntime.dev.js

Diff too large to display

app-route-ex..time.prod.js

Diff too large to display

app-route-tu..ntime.dev.js

Diff too large to display

app-route-tu..time.prod.js

Diff too large to display

app-route-tu..ntime.dev.js

Diff too large to display

app-route-tu..time.prod.js

Diff too large to display

app-route.runtime.dev.js

Diff too large to display

app-route.ru..time.prod.js

Diff too large to display

dev-validati..ntime.dev.js

failed to diff

dev-validati..ntime.dev.js

failed to diff

dev-validati..ntime.dev.js

failed to diff

dev-validati..ntime.dev.js

failed to diff

pages-api-tu..ntime.dev.js

Diff too large to display

pages-api-tu..time.prod.js

Diff too large to display

pages-api.runtime.dev.js

Diff too large to display

pages-api.ru..time.prod.js

Diff too large to display

pages-turbo...ntime.dev.js

Diff too large to display

pages-turbo...time.prod.js

Diff too large to display

pages.runtime.dev.js

Diff too large to display

pages.runtime.prod.js

Diff too large to display

server.runtime.prod.js

Diff too large to display

use-cache-pr..ntime.dev.js

Diff too large to display

use-cache-pr..ntime.dev.js

Diff too large to display

use-cache-pr..ntime.dev.js

Diff too large to display

use-cache-pr..ntime.dev.js

Diff too large to display

📎 Tarball URL

https://vercel-packages.vercel.app/next/commits/fb436e28cbf2ba40aead5da822f6236b185fb839/next

Commit: fb436e2

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

sokra · 2026-08-25T22:15:45Z

Does that have an impact on binary size of the released *.node file, fleet?

vercel-fleet-prod · 2026-08-25T22:55:00Z

Measured on the released Linux x64 GNU artifact path (build-native-release, then the release workflow’s strip -x): +614,344 bytes (+0.596%) installed, from 103,140,384 B to 103,754,728 B. Gzip-9 is +238,790 B (+0.698%) as a transfer-size proxy.

The increase is mostly .text (+563,968 B); the PR adds zstd compression paths, while the base already has some zstd code. This is one target only — other native targets may differ.

The PR stats node_modules change (+940 kB) is directionally consistent but covers more than the .node artifact.

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

vercel · 2026-09-02T19:05:55Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Updated
next-issue-60477-default	Error	Sep 2, 2026 7:08pm UTC
next-issue-60477-hybrid	Error	Sep 2, 2026 7:08pm UTC
next-issue-60477-repro	Error	Sep 2, 2026 7:08pm UTC

Add per-family persistence compression

b384848

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

This comment has been minimized.

Sign in to view

lukesandberg commented Aug 21, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/bin/sst_inspect.rs Outdated

lukesandberg commented Aug 21, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/compression.rs Outdated

lukesandberg commented Aug 21, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/compression.rs Outdated

lukesandberg commented Aug 21, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/compression.rs Outdated

Store persistence compression in metadata

91ce243

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

This comment was marked as spam.

Sign in to view

lukesandberg commented Aug 23, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/benches/mod.rs Outdated

lukesandberg commented Aug 23, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/benches/mod.rs Outdated

lukesandberg commented Aug 24, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/compression.rs Outdated

lukesandberg commented Aug 24, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/compression.rs Outdated

lukesandberg commented Aug 24, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/compression.rs Outdated

lukesandberg commented Aug 24, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/compression.rs Outdated

Simplify persistence compression presets

5eba1f9

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

lukesandberg marked this pull request as ready for review August 26, 2026 01:10

lukesandberg requested a review from bgw August 26, 2026 01:10

lukesandberg marked this pull request as draft August 26, 2026 01:10

lukesandberg marked this pull request as ready for review August 26, 2026 19:59

lukesandberg commented Aug 26, 2026

View reviewed changes

Simplify compression context reuse

fb436e2

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

lukesandberg enabled auto-merge (squash) August 27, 2026 00:03

lukesandberg commented Aug 28, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/static_sorted_file.rs Outdated

vercel-fleet-prod Bot and others added 2 commits August 28, 2026 01:39

Require compression when opening SST files

b25f012

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

Limit persistence compression to task data

2d27eef

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

bgw reviewed Sep 1, 2026

View reviewed changes

Simplify persistence codec metadata

c1d2a2d

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

lukesandberg requested a review from bgw September 2, 2026 02:20

lukesandberg commented Sep 2, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/static_sorted_file_builder.rs Outdated

lukesandberg commented Sep 2, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/static_sorted_file_builder.rs Outdated

Require compression when writing SST files

889a982

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

lukesandberg commented Sep 2, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-persistence/src/compression.rs Outdated

vercel-fleet-prod Bot and others added 2 commits September 2, 2026 06:32

Remove stale compression compatibility note

24010bb

Co-authored-by: Luke Sandberg <210140+lukesandberg@users.noreply.github.com>

Tiny review fixes

c55ba19

vercel Bot had a problem deploying to Preview – next-issue-60477-repro September 2, 2026 19:07 Failure

vercel Bot had a problem deploying to Preview – next-issue-60477-hybrid September 2, 2026 19:07 Failure

vercel Bot had a problem deploying to Preview – next-issue-60477-default September 2, 2026 19:08 Failure

bgw approved these changes Sep 2, 2026

View reviewed changes

lukesandberg merged commit 5a0f57d into canary Sep 2, 2026
229 of 234 checks passed

lukesandberg deleted the codex/turbo-persistence-family-compression branch September 2, 2026 21:51

Uh oh!

Conversation

lukesandberg commented Aug 21, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

What?

Why?

How?

Real (tiny) Next.js cache A/B test

Temporary crate benchmark instrumentation

Native binary size

Vercel Site real application

Size

Performance

Uh oh!

github-actions Bot commented Aug 21, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Tests Passed

Uh oh!

github-actions Bot commented Aug 21, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Stats from current PR

🔴 3 regressions, 4 improvements

⚡ Dev Server

📦 Dev Server (Webpack)

⚡ Production Builds

📦 Production Builds (Webpack)

Bundle Sizes

⚡ Turbopack

📦 Webpack

🔄 Shared (bundler-independent)

Uh oh!

This comment has been minimized.

Uh oh!

Uh oh!

Uh oh!

Uh oh!

This comment was marked as spam.

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

sokra commented Aug 25, 2026

Uh oh!

vercel-fleet-prod Bot commented Aug 25, 2026

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

vercel Bot commented Sep 2, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

lukesandberg commented Aug 21, 2026 •

edited

Loading

github-actions Bot commented Aug 21, 2026 •

edited

Loading

github-actions Bot commented Aug 21, 2026 •

edited

Loading

vercel Bot commented Sep 2, 2026 •

edited

Loading