Add experimental webpack 5 cache option #16307
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Don't use this yet as it's still being developed. This is a first iteration that enables the webpack cache. There's still more to do here, for example if css modules are used there's currently a bug where webpack does not save the cache for browser compilation (impacting build performance). @sokra is going to look into that issue.
Stats from current PRDefault Server Mode (Decrease detected ✓)General Overall increase
|
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| buildDuration | 14.1s | 13.6s | -471ms |
| nodeModulesSize | 57.6 MB | 57.6 MB |
Page Load Tests Overall decrease ⚠️
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| / failed reqs | 0 | 0 | ✓ |
| / total time (seconds) | 2.64 | 2.595 | -0.04 |
| / avg req/sec | 946.81 | 963.42 | +16.61 |
| /error-in-render failed reqs | 0 | 0 | ✓ |
| /error-in-render total time (seconds) | 1.542 | 1.57 | |
| /error-in-render avg req/sec | 1621.08 | 1592.59 |
Client Bundles (main, webpack, commons)
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| 677f882d2ed8..aa9e.js gzip | 10.2 kB | 10.2 kB | ✓ |
| framework.HASH.js gzip | 39 kB | 39 kB | ✓ |
| main-6444cad..dba4.js gzip | 7.16 kB | 7.16 kB | ✓ |
| webpack-e067..f178.js gzip | 751 B | 751 B | ✓ |
| Overall change | 57.1 kB | 57.1 kB | ✓ |
Client Bundles (main, webpack, commons) Modern
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| 677f882d2ed8..dule.js gzip | 6.11 kB | 6.11 kB | ✓ |
| framework.HA..dule.js gzip | 39 kB | 39 kB | ✓ |
| main-532811e..dule.js gzip | 6.18 kB | 6.18 kB | ✓ |
| webpack-07c5..dule.js gzip | 751 B | 751 B | ✓ |
| Overall change | 52 kB | 52 kB | ✓ |
Legacy Client Bundles (polyfills)
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| polyfills-4b..e242.js gzip | 31 kB | 31 kB | ✓ |
| Overall change | 31 kB | 31 kB | ✓ |
Client Pages
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| _app-9a0b9e1..b37e.js gzip | 1.28 kB | 1.28 kB | ✓ |
| _error-1464c..a26f.js gzip | 3.44 kB | 3.44 kB | ✓ |
| hooks-89731c..c609.js gzip | 887 B | 887 B | ✓ |
| index-17468f..5d83.js gzip | 227 B | 227 B | ✓ |
| link-00b8972..6e4e.js gzip | 1.3 kB | 1.3 kB | ✓ |
| routerDirect..924c.js gzip | 284 B | 284 B | ✓ |
| withRouter-7..c13d.js gzip | 284 B | 284 B | ✓ |
| Overall change | 7.7 kB | 7.7 kB | ✓ |
Client Pages Modern
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| _app-75d3a82..dule.js gzip | 625 B | 625 B | ✓ |
| _error-e550f..dule.js gzip | 2.29 kB | 2.29 kB | ✓ |
| hooks-cbf13f..dule.js gzip | 387 B | 387 B | ✓ |
| index-b9a643..dule.js gzip | 226 B | 226 B | ✓ |
| link-72c64d9..dule.js gzip | 1.27 kB | 1.27 kB | ✓ |
| routerDirect..dule.js gzip | 284 B | 284 B | ✓ |
| withRouter-f..dule.js gzip | 282 B | 282 B | ✓ |
| Overall change | 5.36 kB | 5.36 kB | ✓ |
Client Build Manifests
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| _buildManifest.js gzip | 322 B | 322 B | ✓ |
| _buildManife..dule.js gzip | 330 B | 330 B | ✓ |
| Overall change | 652 B | 652 B | ✓ |
Rendered Page Sizes
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| index.html gzip | 946 B | 946 B | ✓ |
| link.html gzip | 951 B | 951 B | ✓ |
| withRouter.html gzip | 939 B | 939 B | ✓ |
| Overall change | 2.84 kB | 2.84 kB | ✓ |
Serverless Mode
General Overall increase ⚠️
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| buildDuration | 16s | 15.8s | -218ms |
| nodeModulesSize | 57.6 MB | 57.6 MB |
Client Bundles (main, webpack, commons)
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| 677f882d2ed8..aa9e.js gzip | 10.2 kB | 10.2 kB | ✓ |
| framework.HASH.js gzip | 39 kB | 39 kB | ✓ |
| main-6444cad..dba4.js gzip | 7.16 kB | 7.16 kB | ✓ |
| webpack-e067..f178.js gzip | 751 B | 751 B | ✓ |
| Overall change | 57.1 kB | 57.1 kB | ✓ |
Client Bundles (main, webpack, commons) Modern
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| 677f882d2ed8..dule.js gzip | 6.11 kB | 6.11 kB | ✓ |
| framework.HA..dule.js gzip | 39 kB | 39 kB | ✓ |
| main-532811e..dule.js gzip | 6.18 kB | 6.18 kB | ✓ |
| webpack-07c5..dule.js gzip | 751 B | 751 B | ✓ |
| Overall change | 52 kB | 52 kB | ✓ |
Legacy Client Bundles (polyfills)
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| polyfills-4b..e242.js gzip | 31 kB | 31 kB | ✓ |
| Overall change | 31 kB | 31 kB | ✓ |
Client Pages
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| _app-9a0b9e1..b37e.js gzip | 1.28 kB | 1.28 kB | ✓ |
| _error-1464c..a26f.js gzip | 3.44 kB | 3.44 kB | ✓ |
| hooks-89731c..c609.js gzip | 887 B | 887 B | ✓ |
| index-17468f..5d83.js gzip | 227 B | 227 B | ✓ |
| link-00b8972..6e4e.js gzip | 1.3 kB | 1.3 kB | ✓ |
| routerDirect..924c.js gzip | 284 B | 284 B | ✓ |
| withRouter-7..c13d.js gzip | 284 B | 284 B | ✓ |
| Overall change | 7.7 kB | 7.7 kB | ✓ |
Client Pages Modern
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| _app-75d3a82..dule.js gzip | 625 B | 625 B | ✓ |
| _error-e550f..dule.js gzip | 2.29 kB | 2.29 kB | ✓ |
| hooks-cbf13f..dule.js gzip | 387 B | 387 B | ✓ |
| index-b9a643..dule.js gzip | 226 B | 226 B | ✓ |
| link-72c64d9..dule.js gzip | 1.27 kB | 1.27 kB | ✓ |
| routerDirect..dule.js gzip | 284 B | 284 B | ✓ |
| withRouter-f..dule.js gzip | 282 B | 282 B | ✓ |
| Overall change | 5.36 kB | 5.36 kB | ✓ |
Client Build Manifests
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| _buildManifest.js gzip | 322 B | 322 B | ✓ |
| _buildManife..dule.js gzip | 330 B | 330 B | ✓ |
| Overall change | 652 B | 652 B | ✓ |
Serverless bundles
| vercel/next.js canary | timneutkens/next.js add/experimental-webpack5-caching | Change | |
|---|---|---|---|
| _error.js | 1.03 MB | 1.03 MB | ✓ |
| 404.html | 4.18 kB | 4.18 kB | ✓ |
| hooks.html | 3.82 kB | 3.82 kB | ✓ |
| index.js | 1.03 MB | 1.03 MB | ✓ |
| link.js | 1.07 MB | 1.07 MB | ✓ |
| routerDirect.js | 1.07 MB | 1.07 MB | ✓ |
| withRouter.js | 1.07 MB | 1.07 MB | ✓ |
| Overall change | 5.27 MB | 5.27 MB | ✓ |
m-lautenbach
pushed a commit
to m-lautenbach/next.js
that referenced
this pull request
Aug 20, 2020
Don't use this yet as it's still being developed. This is a first iteration that enables the webpack cache. There's still more to do here, for example if css modules are used there's currently a bug where webpack does not save the cache for browser compilation (impacting build performance). @sokra is going to look into that issue.
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Don't use this yet as it's still being developed. This is a first iteration that enables the webpack cache. There's still more to do here, for example if css modules are used there's currently a bug where webpack does not save the cache for browser compilation (impacting build performance). @sokra is going to look into that issue.