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test: reduce e2e timing flakes#2665

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test: reduce e2e timing flakes#2665
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@NathanColosimo

@NathanColosimo NathanColosimo commented Jun 26, 2026

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Draft split from #2649. Experimenting with less flaky PR runs by isolating e2e timing and polling changes from the streaming/runtime investigation.

Problem: several e2e tests used fixed sleeps or exact distributed timing thresholds, which can flake under preview queue latency, cold starts, and clock skew.

Fix: add skew-aware elapsed assertions with a positive 1s floor, replace fixed waits with lightweight event polling capped at 15s by default, keep race loser branches at 10s with a 5s winner bound, send the hook regression payloads back-to-back to match the production event shape, and resume superseded hooks with the fresh hook handle.

Validation: Biome focused check, @workflow/core typecheck, simplify review loop, and autoreview local clean.

Monitoring: after each round of changes, rerun failed and previously successful e2e jobs so consistency is proven by repeated passes, not one green run.

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🦋 Changeset detected

Latest commit: 8ca0270

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages
Name Type
@workflow/core Patch
@workflow/builders Patch
@workflow/cli Patch
@workflow/next Patch
@workflow/nitro Patch
@workflow/vitest Patch
@workflow/web-shared Patch
@workflow/web Patch
workflow Patch
@workflow/world-testing Patch
@workflow/astro Patch
@workflow/nest Patch
@workflow/rollup Patch
@workflow/sveltekit Patch
@workflow/vite Patch
@workflow/nuxt Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Express 0.045s (-9.1% 🟢) 1.006s (~) 0.961s 10 1.00x
💻 Local Nitro 0.047s (+35.4% 🔺) 1.006s (~) 0.959s 10 1.06x
💻 Local Next.js (Turbopack) 0.050s (~) 1.007s (~) 0.957s 10 1.12x
🐘 Postgres Next.js (Turbopack) 0.056s (-52.2% 🟢) 1.012s (-3.9%) 0.955s 10 1.26x
🐘 Postgres Nitro 0.063s (-11.3% 🟢) 1.012s (~) 0.950s 10 1.40x
🐘 Postgres Express 0.077s (+21.8% 🔺) 1.012s (~) 0.935s 10 1.71x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 0.248s (+18.2% 🔺) 2.119s (+41.8% 🔺) 1.871s 10 1.00x
▲ Vercel Nitro 0.277s (+40.0% 🔺) 1.914s (+12.1% 🔺) 1.637s 10 1.11x
▲ Vercel Next.js (Turbopack) 0.559s (+2.0%) 2.186s (+7.5% 🔺) 1.626s 10 2.25x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 1 step

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Express 1.078s (~) 2.006s (~) 0.928s 10 1.00x
💻 Local Nitro 1.081s (+1.4%) 2.007s (~) 0.926s 10 1.00x
💻 Local Next.js (Turbopack) 1.085s (~) 2.006s (~) 0.921s 10 1.01x
🐘 Postgres Express 1.093s (~) 2.008s (~) 0.916s 10 1.01x
🐘 Postgres Next.js (Turbopack) 1.093s (+0.9%) 2.009s (-0.5%) 0.916s 10 1.01x
🐘 Postgres Nitro 1.099s (~) 2.009s (~) 0.910s 10 1.02x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 1.421s (+1.1%) 3.003s (+6.0% 🔺) 1.581s 10 1.00x
▲ Vercel Nitro 1.550s (+12.2% 🔺) 3.138s (+0.9%) 1.588s 10 1.09x
▲ Vercel Next.js (Turbopack) 2.272s (+5.8% 🔺) 3.935s (+10.8% 🔺) 1.663s 10 1.60x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Express 10.441s (~) 11.022s (~) 0.580s 3 1.00x
🐘 Postgres Express 10.456s (~) 11.021s (~) 0.565s 3 1.00x
💻 Local Nitro 10.464s (~) 11.023s (~) 0.559s 3 1.00x
💻 Local Next.js (Turbopack) 10.473s (~) 11.021s (~) 0.549s 3 1.00x
🐘 Postgres Nitro 10.476s (-0.6%) 11.016s (~) 0.540s 3 1.00x
🐘 Postgres Next.js (Turbopack) 10.512s (-1.9%) 11.019s (~) 0.507s 3 1.01x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 11.904s (+1.2%) 13.790s (-0.8%) 1.886s 3 1.00x
▲ Vercel Nitro 12.252s (+3.5%) 14.013s (+5.7% 🔺) 1.761s 3 1.03x
▲ Vercel Next.js (Turbopack) 13.813s (+9.2% 🔺) 16.127s (+16.3% 🔺) 2.315s 2 1.16x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 13.554s (-0.9%) 14.019s (~) 0.465s 5 1.00x
🐘 Postgres Next.js (Turbopack) 13.574s (-0.5%) 14.023s (~) 0.448s 5 1.00x
💻 Local Nitro 13.619s (+0.9%) 14.028s (~) 0.409s 5 1.00x
💻 Local Express 13.636s (~) 14.025s (~) 0.389s 5 1.01x
🐘 Postgres Nitro 13.650s (-0.5%) 14.020s (~) 0.371s 5 1.01x
💻 Local Next.js (Turbopack) 13.656s (~) 14.028s (~) 0.372s 5 1.01x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 18.797s (+1.1%) 20.018s (-2.8%) 1.221s 3 1.00x
▲ Vercel Express 19.399s (+13.6% 🔺) 21.603s (+14.1% 🔺) 2.204s 3 1.03x
▲ Vercel Next.js (Turbopack) 19.696s (+7.8% 🔺) 21.655s (+7.2% 🔺) 1.959s 3 1.05x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 12.175s (-1.0%) 13.019s (~) 0.844s 7 1.00x
💻 Local Nitro 12.186s (+3.3%) 13.025s (+8.3% 🔺) 0.838s 7 1.00x
💻 Local Next.js (Turbopack) 12.326s (~) 13.026s (~) 0.700s 7 1.01x
🐘 Postgres Express 12.372s (+2.2%) 13.026s (+1.2%) 0.653s 7 1.02x
🐘 Postgres Next.js (Turbopack) 12.439s (+0.5%) 13.018s (~) 0.580s 7 1.02x
💻 Local Express 12.473s (+1.0%) 13.169s (+1.1%) 0.696s 7 1.02x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 21.645s (+19.8% 🔺) 24.315s (+20.3% 🔺) 2.670s 4 1.00x
▲ Vercel Nitro 21.891s (+22.7% 🔺) 23.368s (+19.9% 🔺) 1.476s 4 1.01x
▲ Vercel Next.js (Turbopack) 24.422s (+24.5% 🔺) 26.405s (+25.7% 🔺) 1.984s 4 1.13x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 1.173s (-2.4%) 2.008s (~) 0.835s 15 1.00x
🐘 Postgres Express 1.180s (~) 2.007s (~) 0.828s 15 1.01x
🐘 Postgres Next.js (Turbopack) 1.185s (-12.7% 🟢) 2.008s (-1.2%) 0.823s 15 1.01x
💻 Local Express 1.392s (-2.1%) 2.007s (~) 0.614s 15 1.19x
💻 Local Nitro 1.410s (+8.8% 🔺) 2.007s (~) 0.597s 15 1.20x
💻 Local Next.js (Turbopack) 1.465s (+4.6%) 2.006s (~) 0.541s 15 1.25x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.332s (+6.2% 🔺) 3.903s (+7.5% 🔺) 1.572s 8 1.00x
▲ Vercel Express 2.383s (+24.6% 🔺) 4.017s (+5.7% 🔺) 1.635s 8 1.02x
▲ Vercel Next.js (Turbopack) 3.784s (+12.4% 🔺) 5.735s (+19.3% 🔺) 1.952s 6 1.62x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 1.288s (-5.5% 🟢) 2.509s (~) 1.221s 12 1.00x
🐘 Postgres Express 1.290s (~) 2.593s (~) 1.303s 12 1.00x
🐘 Postgres Next.js (Turbopack) 1.296s (-7.7% 🟢) 3.009s (~) 1.713s 10 1.01x
💻 Local Express 2.454s (-11.2% 🟢) 2.918s (-3.0%) 0.463s 11 1.91x
💻 Local Next.js (Turbopack) 2.515s (-3.5%) 3.008s (~) 0.493s 10 1.95x
💻 Local Nitro 2.574s (+6.8% 🔺) 2.918s (-3.3%) 0.344s 11 2.00x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.968s (+18.4% 🔺) 4.438s (+20.6% 🔺) 1.470s 7 1.00x
▲ Vercel Express 3.270s (+17.8% 🔺) 5.012s (+11.9% 🔺) 1.742s 6 1.10x
▲ Vercel Next.js (Turbopack) 4.362s (+24.5% 🔺) 6.415s (+37.2% 🔺) 2.053s 5 1.47x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.602s (+1.2%) 4.136s (~) 2.533s 8 1.00x
🐘 Postgres Nitro 1.619s (-2.6%) 4.298s (~) 2.679s 7 1.01x
🐘 Postgres Next.js (Turbopack) 3.036s (+6.3% 🔺) 5.512s (+3.1%) 2.477s 6 1.89x
💻 Local Express 4.923s (-21.8% 🟢) 5.347s (-21.5% 🟢) 0.424s 6 3.07x
💻 Local Next.js (Turbopack) 5.850s (-21.1% 🟢) 6.815s (-20.0% 🟢) 0.965s 5 3.65x
💻 Local Nitro 6.602s (+20.9% 🔺) 7.218s (+20.0% 🔺) 0.616s 5 4.12x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 3.828s (+35.7% 🔺) 5.233s (+10.6% 🔺) 1.405s 6 1.00x
▲ Vercel Express 4.852s (+57.2% 🔺) 6.465s (+35.7% 🔺) 1.613s 5 1.27x
▲ Vercel Next.js (Turbopack) 6.088s (+20.2% 🔺) 8.142s (+25.1% 🔺) 2.054s 4 1.59x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 1.174s (-9.5% 🟢) 2.008s (-1.0%) 0.833s 15 1.00x
🐘 Postgres Nitro 1.186s (-0.8%) 2.007s (~) 0.821s 15 1.01x
🐘 Postgres Express 1.187s (-18.9% 🟢) 2.007s (-9.7% 🟢) 0.820s 15 1.01x
💻 Local Express 1.423s (-1.4%) 2.007s (~) 0.583s 15 1.21x
💻 Local Next.js (Turbopack) 1.444s (-11.0% 🟢) 2.007s (-3.2%) 0.563s 15 1.23x
💻 Local Nitro 1.481s (+25.1% 🔺) 2.007s (~) 0.526s 15 1.26x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.627s (+30.0% 🔺) 4.369s (+13.2% 🔺) 1.742s 7 1.00x
▲ Vercel Nitro 2.659s (+30.9% 🔺) 4.124s (+19.8% 🔺) 1.465s 8 1.01x
▲ Vercel Next.js (Turbopack) 3.689s (+23.4% 🔺) 5.537s (+23.3% 🔺) 1.847s 6 1.40x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 1.290s (-8.8% 🟢) 2.919s (+5.0% 🔺) 1.629s 11 1.00x
🐘 Postgres Express 1.342s (+1.2%) 2.592s (+11.9% 🔺) 1.250s 12 1.04x
🐘 Postgres Nitro 1.343s (+2.0%) 2.317s (-7.7% 🟢) 0.974s 13 1.04x
💻 Local Nitro 2.572s (+8.0% 🔺) 3.109s (+3.2%) 0.537s 10 1.99x
💻 Local Express 2.617s (-1.7%) 3.008s (+3.1%) 0.391s 10 2.03x
💻 Local Next.js (Turbopack) 2.771s (+14.1% 🔺) 3.310s (+6.5% 🔺) 0.540s 10 2.15x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 3.333s (+53.2% 🔺) 5.453s (+41.9% 🔺) 2.120s 6 1.00x
▲ Vercel Nitro 3.997s (+69.6% 🔺) 5.445s (+49.8% 🔺) 1.448s 6 1.20x
▲ Vercel Next.js (Turbopack) 4.233s (+21.1% 🔺) 5.937s (+21.6% 🔺) 1.704s 6 1.27x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.582s (~) 4.011s (-3.0%) 2.429s 8 1.00x
🐘 Postgres Nitro 1.586s (-4.8%) 4.296s (~) 2.710s 7 1.00x
🐘 Postgres Next.js (Turbopack) 3.110s (+13.3% 🔺) 5.849s (+12.0% 🔺) 2.739s 6 1.97x
💻 Local Next.js (Turbopack) 6.047s (-21.3% 🟢) 6.617s (-24.6% 🟢) 0.570s 5 3.82x
💻 Local Express 6.154s (~) 7.015s (+2.9%) 0.861s 5 3.89x
💻 Local Nitro 7.164s (+31.9% 🔺) 8.016s (+24.9% 🔺) 0.852s 4 4.53x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 3.440s (+18.9% 🔺) 5.228s (+8.0% 🔺) 1.788s 6 1.00x
▲ Vercel Nitro 4.402s (+57.6% 🔺) 6.289s (+33.4% 🔺) 1.887s 5 1.28x
▲ Vercel Next.js (Turbopack) 5.248s (+32.5% 🔺) 7.145s (+30.4% 🔺) 1.896s 5 1.53x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 0.522s (+1.7%) 1.006s (~) 0.484s 60 1.00x
🐘 Postgres Next.js (Turbopack) 0.527s (-15.5% 🟢) 1.006s (-6.4% 🟢) 0.478s 60 1.01x
💻 Local Express 0.538s (-5.8% 🟢) 1.005s (~) 0.467s 60 1.03x
🐘 Postgres Nitro 0.541s (-5.9% 🟢) 1.006s (-1.7%) 0.464s 60 1.04x
💻 Local Nitro 0.577s (+29.4% 🔺) 1.005s (~) 0.429s 60 1.10x
💻 Local Next.js (Turbopack) 0.650s (-1.0%) 1.022s (~) 0.372s 59 1.24x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 4.341s (+69.1% 🔺) 6.238s (+55.2% 🔺) 1.897s 10 1.00x
▲ Vercel Nitro 4.519s (+62.7% 🔺) 6.170s (+30.1% 🔺) 1.652s 10 1.04x
▲ Vercel Next.js (Turbopack) 4.803s (+25.1% 🔺) 6.739s (+24.3% 🔺) 1.935s 9 1.11x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 1.261s (-26.7% 🟢) 2.008s (-13.8% 🟢) 0.747s 45 1.00x
🐘 Postgres Express 1.292s (+2.7%) 2.030s (~) 0.738s 45 1.02x
🐘 Postgres Nitro 1.301s (-6.2% 🟢) 2.007s (~) 0.707s 45 1.03x
💻 Local Express 1.354s (-3.1%) 2.006s (~) 0.652s 45 1.07x
💻 Local Nitro 1.457s (+40.6% 🔺) 2.006s (+38.2% 🔺) 0.549s 45 1.16x
💻 Local Next.js (Turbopack) 1.548s (+1.6%) 2.029s (+1.1%) 0.481s 45 1.23x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 8.622s (+24.9% 🔺) 10.543s (+20.7% 🔺) 1.920s 9 1.00x
▲ Vercel Nitro 8.892s (+45.3% 🔺) 10.643s (+43.1% 🔺) 1.750s 9 1.03x
▲ Vercel Next.js (Turbopack) 10.349s (+21.7% 🔺) 12.166s (+18.8% 🔺) 1.817s 8 1.20x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 2.571s (-16.7% 🟢) 3.086s (-14.4% 🟢) 0.515s 39 1.00x
🐘 Postgres Express 2.580s (+8.0% 🔺) 3.086s (+1.8%) 0.506s 39 1.00x
🐘 Postgres Nitro 2.661s (-8.0% 🟢) 3.112s (-4.3%) 0.450s 39 1.04x
💻 Local Express 3.001s (-1.5%) 3.494s (-2.9%) 0.493s 35 1.17x
💻 Local Nitro 3.181s (+43.4% 🔺) 3.913s (+38.6% 🔺) 0.732s 31 1.24x
💻 Local Next.js (Turbopack) 3.334s (~) 4.009s (~) 0.675s 30 1.30x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 15.959s (+19.3% 🔺) 17.409s (+15.6% 🔺) 1.449s 7 1.00x
▲ Vercel Express 16.166s (+22.8% 🔺) 18.103s (+15.7% 🔺) 1.937s 7 1.01x
▲ Vercel Next.js (Turbopack) 22.324s (+16.1% 🔺) 24.362s (+17.5% 🔺) 2.038s 5 1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.179s (-30.9% 🟢) 1.006s (-0.8%) 0.828s 60 1.00x
🐘 Postgres Express 0.214s (+5.7% 🔺) 1.007s (~) 0.792s 60 1.20x
🐘 Postgres Nitro 0.217s (-5.1% 🟢) 1.006s (~) 0.789s 60 1.22x
💻 Local Express 0.455s (-2.4%) 1.004s (~) 0.550s 60 2.54x
💻 Local Nitro 0.465s (+23.5% 🔺) 1.005s (~) 0.540s 60 2.60x
💻 Local Next.js (Turbopack) 0.632s (+2.4%) 1.022s (+1.7%) 0.390s 59 3.54x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 1.388s (+37.7% 🔺) 3.135s (+17.1% 🔺) 1.747s 20 1.00x
▲ Vercel Nitro 1.692s (+57.2% 🔺) 3.233s (+31.0% 🔺) 1.542s 19 1.22x
▲ Vercel Next.js (Turbopack) 2.601s (+27.6% 🔺) 4.337s (+29.8% 🔺) 1.736s 15 1.87x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.268s (-49.9% 🟢) 1.006s (-11.2% 🟢) 0.738s 90 1.00x
🐘 Postgres Nitro 0.319s (-10.1% 🟢) 1.006s (~) 0.687s 90 1.19x
🐘 Postgres Express 0.325s (+5.9% 🔺) 1.017s (+1.1%) 0.693s 89 1.21x
💻 Local Nitro 2.067s (+39.0% 🔺) 2.636s (+28.4% 🔺) 0.570s 35 7.70x
💻 Local Express 2.218s (-2.4%) 2.820s (-1.1%) 0.602s 32 8.27x
💻 Local Next.js (Turbopack) 2.742s (-1.9%) 3.330s (~) 0.589s 28 10.22x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.081s (+41.5% 🔺) 3.955s (+23.0% 🔺) 1.875s 23 1.00x
▲ Vercel Nitro 2.153s (+65.3% 🔺) 3.743s (+40.0% 🔺) 1.590s 25 1.03x
▲ Vercel Next.js (Turbopack) 3.606s (+41.7% 🔺) 5.419s (+44.1% 🔺) 1.813s 17 1.73x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.483s (-44.9% 🟢) 2.984s (+18.1% 🔺) 2.502s 41 1.00x
🐘 Postgres Express 0.510s (-1.2%) 1.078s (+2.7%) 0.567s 112 1.06x
🐘 Postgres Nitro 0.527s (-5.0%) 1.078s (-2.7%) 0.551s 112 1.09x
💻 Local Express 9.333s (-0.6%) 10.361s (-2.4%) 1.027s 12 19.33x
💻 Local Nitro 9.822s (+32.1% 🔺) 10.779s (+30.1% 🔺) 0.957s 12 20.34x
💻 Local Next.js (Turbopack) 10.089s (-5.5% 🟢) 11.216s (-3.9%) 1.127s 11 20.89x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.720s (+49.5% 🔺) 4.256s (+17.5% 🔺) 1.535s 29 1.00x
▲ Vercel Express 3.040s (+52.8% 🔺) 4.851s (+23.7% 🔺) 1.811s 25 1.12x
▲ Vercel Next.js (Turbopack) 4.995s (+33.3% 🔺) 6.808s (+30.5% 🔺) 1.814s 18 1.84x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Stream Benchmarks (includes TTFB metrics)
workflow with stream

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Express 1.143s (-0.5%) 2.004s (~) 0.010s (-6.4% 🟢) 2.018s (~) 0.874s 10 1.00x
💻 Local Next.js (Turbopack) 1.144s (+0.6%) 1.967s (~) 0.013s (+24.8% 🔺) 2.021s (~) 0.877s 10 1.00x
🐘 Postgres Express 1.156s (~) 1.996s (~) 0.001s (+22.2% 🔺) 2.011s (~) 0.855s 10 1.01x
🐘 Postgres Next.js (Turbopack) 1.159s (-11.0% 🟢) 2.000s (~) 0.001s (-94.0% 🟢) 2.012s (-1.3%) 0.853s 10 1.01x
🐘 Postgres Nitro 1.160s (-1.4%) 1.997s (~) 0.001s (~) 2.011s (~) 0.851s 10 1.01x
💻 Local Nitro 1.160s (+4.3%) 2.005s (~) 0.013s (-62.2% 🟢) 2.020s (-1.1%) 0.860s 10 1.01x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.226s (+14.8% 🔺) 3.613s (+6.9% 🔺) 3.322s (+119.8% 🔺) 7.489s (+39.1% 🔺) 5.264s 10 1.00x
▲ Vercel Nitro 2.424s (+27.1% 🔺) 3.408s (+11.3% 🔺) 3.311s (+120.0% 🔺) 7.144s (+42.0% 🔺) 4.719s 10 1.09x
▲ Vercel Next.js (Turbopack) 3.919s (+17.1% 🔺) 4.560s (+25.1% 🔺) 2.185s (+57.2% 🔺) 7.895s (+24.4% 🔺) 3.976s 10 1.76x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Express 1.538s (-1.0%) 2.010s (~) 0.013s (-9.7% 🟢) 2.026s (~) 0.488s 30 1.00x
🐘 Postgres Express 1.538s (~) 2.004s (~) 0.006s (+4.3%) 2.026s (~) 0.488s 30 1.00x
🐘 Postgres Next.js (Turbopack) 1.570s (-20.4% 🟢) 2.009s (-16.0% 🟢) 0.005s (+32.4% 🔺) 2.026s (-16.2% 🟢) 0.456s 30 1.02x
💻 Local Nitro 1.572s (+11.4% 🔺) 2.009s (~) 0.013s (-27.5% 🟢) 2.026s (~) 0.454s 30 1.02x
🐘 Postgres Nitro 1.586s (-2.9%) 2.002s (~) 0.005s (-8.3% 🟢) 2.026s (~) 0.440s 30 1.03x
💻 Local Next.js (Turbopack) 1.596s (-0.7%) 1.970s (~) 0.012s (-7.5% 🟢) 2.025s (~) 0.429s 30 1.04x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 6.155s (+6.9% 🔺) 7.675s (+4.3%) 0.224s (-11.9% 🟢) 8.387s (+3.3%) 2.232s 8 1.00x
▲ Vercel Nitro 6.472s (+15.9% 🔺) 7.707s (+14.9% 🔺) 0.538s (+145.9% 🔺) 8.670s (+17.1% 🔺) 2.198s 7 1.05x
▲ Vercel Next.js (Turbopack) 11.517s (+23.9% 🔺) 12.239s (+21.5% 🔺) 0.235s (-12.1% 🟢) 13.899s (+23.6% 🔺) 2.383s 5 1.87x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 0.743s (-10.7% 🟢) 1.013s (-8.0% 🟢) 0.000s (+86.2% 🔺) 1.040s (-7.1% 🟢) 0.297s 58 1.00x
🐘 Postgres Express 0.767s (+4.0%) 1.105s (+7.5% 🔺) 0.000s (+Infinity% 🔺) 1.119s (+6.1% 🔺) 0.351s 54 1.03x
🐘 Postgres Next.js (Turbopack) 0.993s (-9.2% 🟢) 1.394s (-16.0% 🟢) 0.000s (+Infinity% 🔺) 1.412s (-16.0% 🟢) 0.420s 43 1.34x
💻 Local Express 1.214s (-8.9% 🟢) 1.918s (-4.8%) 0.000s (-87.8% 🟢) 1.921s (-4.8%) 0.707s 32 1.63x
💻 Local Nitro 1.291s (+35.1% 🔺) 1.980s (+50.6% 🔺) 0.000s (-22.3% 🟢) 1.983s (+50.4% 🔺) 0.692s 31 1.74x
💻 Local Next.js (Turbopack) 1.383s (-5.2% 🟢) 1.978s (~) 0.000s (+266.7% 🔺) 2.016s (~) 0.633s 30 1.86x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 3.756s (+34.8% 🔺) 4.750s (+13.8% 🔺) 0.000s (NaN%) 5.224s (+12.6% 🔺) 1.468s 12 1.00x
▲ Vercel Express 4.005s (+40.7% 🔺) 5.357s (+20.0% 🔺) 0.000s (+18.2% 🔺) 5.853s (+17.4% 🔺) 1.848s 11 1.07x
▲ Vercel Next.js (Turbopack) 5.487s (+12.3% 🔺) 6.407s (+19.1% 🔺) 0.000s (+344.4% 🔺) 7.483s (+17.1% 🔺) 1.996s 9 1.46x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.727s (+5.0% 🔺) 2.392s (+6.2% 🔺) 0.000s (+224.0% 🔺) 2.442s (+7.3% 🔺) 0.715s 25 1.00x
🐘 Postgres Nitro 1.792s (+2.9%) 2.303s (-1.2%) 0.000s (+211.5% 🔺) 2.317s (-1.2%) 0.525s 26 1.04x
🐘 Postgres Next.js (Turbopack) 2.457s (-27.2% 🟢) 3.002s (-22.6% 🟢) 0.000s (NaN%) 3.011s (-23.3% 🟢) 0.554s 20 1.42x
💻 Local Express 3.310s (-1.5%) 4.026s (+3.2%) 0.000s (-50.2% 🟢) 4.029s (+3.1%) 0.719s 15 1.92x
💻 Local Nitro 3.514s (+60.9% 🔺) 4.093s (+57.1% 🔺) 0.000s (-86.7% 🟢) 4.096s (+56.9% 🔺) 0.581s 15 2.03x
💻 Local Next.js (Turbopack) 3.693s (-8.6% 🟢) 4.126s (-8.2% 🟢) 0.001s (+7.7% 🔺) 4.167s (-8.1% 🟢) 0.474s 15 2.14x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 5.512s (+6.7% 🔺) 6.973s (+6.6% 🔺) 0.004s (+Infinity% 🔺) 7.565s (+6.8% 🔺) 2.053s 8 1.00x
▲ Vercel Nitro 5.747s (+5.0% 🔺) 6.833s (+11.8% 🔺) 0.000s (NaN%) 7.375s (+3.3%) 1.628s 9 1.04x
▲ Vercel Next.js (Turbopack) 7.382s (+7.0% 🔺) 8.476s (+12.5% 🔺) 0.000s (NaN%) 9.582s (+11.5% 🔺) 2.200s 7 1.34x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World 🥇 Fastest Framework Wins
💻 Local Express 16/21
🐘 Postgres Express 9/21
▲ Vercel Express 14/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework 🥇 Fastest World Wins
Express 🐘 Postgres 16/21
Next.js (Turbopack) 🐘 Postgres 16/21
Nitro 🐘 Postgres 16/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)
  • 🌐 Platformatic: Community world (local development)

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🧪 E2E Test Results

All tests passed

Summary

Passed Failed Skipped Total
✅ ▲ Vercel Production 1442 0 230 1672
✅ 💻 Local Development 1605 0 219 1824
✅ 📦 Local Production 1605 0 219 1824
✅ 🐘 Local Postgres 1593 0 231 1824
✅ 🪟 Windows 152 0 0 152
✅ 📋 Other 885 0 179 1064
Total 7282 0 1078 8360

Details by Category

✅ ▲ Vercel Production
App Passed Failed Skipped
✅ astro 125 0 27
✅ example 125 0 27
✅ express 125 0 27
✅ fastify 125 0 27
✅ hono 125 0 27
✅ nextjs-turbopack 149 0 3
✅ nextjs-webpack 149 0 3
✅ nitro 125 0 27
✅ nuxt 125 0 27
✅ sveltekit 144 0 8
✅ vite 125 0 27
✅ 💻 Local Development
App Passed Failed Skipped
✅ astro-stable 127 0 25
✅ express-stable 127 0 25
✅ fastify-stable 127 0 25
✅ hono-stable 127 0 25
✅ nextjs-turbopack-canary 133 0 19
✅ nextjs-turbopack-stable 152 0 0
✅ nextjs-webpack-canary 133 0 19
✅ nextjs-webpack-stable 152 0 0
✅ nitro-stable 127 0 25
✅ nuxt-stable 127 0 25
✅ sveltekit-stable 146 0 6
✅ vite-stable 127 0 25
✅ 📦 Local Production
App Passed Failed Skipped
✅ astro-stable 127 0 25
✅ express-stable 127 0 25
✅ fastify-stable 127 0 25
✅ hono-stable 127 0 25
✅ nextjs-turbopack-canary 133 0 19
✅ nextjs-turbopack-stable 152 0 0
✅ nextjs-webpack-canary 133 0 19
✅ nextjs-webpack-stable 152 0 0
✅ nitro-stable 127 0 25
✅ nuxt-stable 127 0 25
✅ sveltekit-stable 146 0 6
✅ vite-stable 127 0 25
✅ 🐘 Local Postgres
App Passed Failed Skipped
✅ astro-stable 126 0 26
✅ express-stable 126 0 26
✅ fastify-stable 126 0 26
✅ hono-stable 126 0 26
✅ nextjs-turbopack-canary 132 0 20
✅ nextjs-turbopack-stable 151 0 1
✅ nextjs-webpack-canary 132 0 20
✅ nextjs-webpack-stable 151 0 1
✅ nitro-stable 126 0 26
✅ nuxt-stable 126 0 26
✅ sveltekit-stable 145 0 7
✅ vite-stable 126 0 26
✅ 🪟 Windows
App Passed Failed Skipped
✅ nextjs-turbopack 152 0 0
✅ 📋 Other
App Passed Failed Skipped
✅ e2e-local-dev-nest-stable 127 0 25
✅ e2e-local-dev-tanstack-start- 127 0 25
✅ e2e-local-postgres-nest-stable 126 0 26
✅ e2e-local-postgres-tanstack-start- 126 0 26
✅ e2e-local-prod-nest-stable 127 0 25
✅ e2e-local-prod-tanstack-start- 127 0 25
✅ e2e-vercel-prod-tanstack-start 125 0 27

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