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fix: nitro duplicate building workflows on startup#619

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adriandlam merged 1 commit intomainfrom
fix/nitro-duplicate-workflow-bundling
Dec 16, 2025
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fix: nitro duplicate building workflows on startup#619
adriandlam merged 1 commit intomainfrom
fix/nitro-duplicate-workflow-bundling

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nitro was building workflows on startup and dev:reload immediately after server starts

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changeset-bot bot commented Dec 16, 2025

🦋 Changeset detected

Latest commit: 345b8fd

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

This PR includes changesets to release 5 packages
Name Type
@workflow/nitro Patch
@workflow/nuxt Patch
workflow Patch
@workflow/ai Patch
@workflow/world-testing Patch

Not sure what this means? Click here to learn what changesets are.

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

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vercel bot commented Dec 16, 2025

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

Project Deployment Review Updated (UTC)
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github-actions bot commented Dec 16, 2025

🧪 E2E Test Results

Some tests failed

Summary

Passed Failed Skipped Total
✅ ▲ Vercel Production 286 0 11 297
✅ 💻 Local Development 262 0 8 270
✅ 📦 Local Production 262 0 8 270
✅ 🐘 Local Postgres 262 0 8 270
✅ 🪟 Windows 27 0 0 27
❌ 🌍 Community Worlds 109 11 0 120
Total 1208 11 35 1254

❌ Failed Tests

🌍 Community Worlds (11 failed)

mongodb (1 failed):

  • webhookWorkflow

redis (1 failed):

  • webhookWorkflow

starter (8 failed):

  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step

turso (1 failed):

  • webhookWorkflow

Details by Category

✅ ▲ Vercel Production
App Passed Failed Skipped
✅ astro 26 0 1
✅ example 26 0 1
✅ express 26 0 1
✅ fastify 26 0 1
✅ hono 26 0 1
✅ nextjs-turbopack 26 0 1
✅ nextjs-webpack 26 0 1
✅ nitro 26 0 1
✅ nuxt 26 0 1
✅ sveltekit 26 0 1
✅ vite 26 0 1
✅ 💻 Local Development
App Passed Failed Skipped
✅ astro-stable 26 0 1
✅ express-stable 26 0 1
✅ fastify-stable 26 0 1
✅ hono-stable 26 0 1
✅ nextjs-turbopack-stable 27 0 0
✅ nextjs-webpack-stable 27 0 0
✅ nitro-stable 26 0 1
✅ nuxt-stable 26 0 1
✅ sveltekit-stable 26 0 1
✅ vite-stable 26 0 1
✅ 📦 Local Production
App Passed Failed Skipped
✅ astro-stable 26 0 1
✅ express-stable 26 0 1
✅ fastify-stable 26 0 1
✅ hono-stable 26 0 1
✅ nextjs-turbopack-stable 27 0 0
✅ nextjs-webpack-stable 27 0 0
✅ nitro-stable 26 0 1
✅ nuxt-stable 26 0 1
✅ sveltekit-stable 26 0 1
✅ vite-stable 26 0 1
✅ 🐘 Local Postgres
App Passed Failed Skipped
✅ astro-stable 26 0 1
✅ express-stable 26 0 1
✅ fastify-stable 26 0 1
✅ hono-stable 26 0 1
✅ nextjs-turbopack-stable 27 0 0
✅ nextjs-webpack-stable 27 0 0
✅ nitro-stable 26 0 1
✅ nuxt-stable 26 0 1
✅ sveltekit-stable 26 0 1
✅ vite-stable 26 0 1
✅ 🪟 Windows
App Passed Failed Skipped
✅ nextjs-turbopack 27 0 0
❌ 🌍 Community Worlds
App Passed Failed Skipped
✅ mongodb-dev 3 0 0
❌ mongodb 26 1 0
✅ redis-dev 3 0 0
❌ redis 26 1 0
✅ starter-dev 3 0 0
❌ starter 19 8 0
✅ turso-dev 3 0 0
❌ turso 26 1 0

📋 View full workflow run

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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
🌐 Starter 🥇 Next.js (Turbopack) 0.038s (-3.6%) 1.014s (~) 0.976s 10 1.00x
💻 Local Next.js (Turbopack) 0.038s (-10.3% 🟢) 1.016s (~) 0.978s 10 1.02x
🌐 Redis Next.js (Turbopack) 0.041s (~) 1.017s (~) 0.975s 10 1.10x
💻 Local Nitro 0.044s (+2.1%) 1.006s (~) 0.962s 10 1.16x
💻 Local Express 0.046s (+4.6%) 1.007s (~) 0.961s 10 1.21x
🌐 Turso Next.js (Turbopack) 0.095s (-14.5% 🟢) 1.014s (~) 0.920s 10 2.51x
🌐 MongoDB Next.js (Turbopack) 0.108s (+3.4%) 1.014s (~) 0.906s 10 2.87x
🐘 Postgres Express 0.255s (-30.9% 🟢) 1.031s (+1.8%) 0.777s 10 6.76x
🐘 Postgres Nitro 0.257s (-28.0% 🟢) 1.018s (+0.5%) 0.761s 10 6.80x
🐘 Postgres Next.js (Turbopack) 0.291s (+95.9% 🔺) 1.021s (~) 0.730s 10 7.73x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 0.509s (-32.9% 🟢) 1.396s (-15.7% 🟢) 0.887s 10 1.00x
▲ Vercel Nitro 0.670s (-3.1%) 1.702s (+11.0% 🔺) 1.031s 10 1.32x
▲ Vercel Express ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🌐 Starter 🥇 Next.js (Turbopack) 1.090s (~) 2.009s (~) 0.919s 10 1.00x
💻 Local Next.js (Turbopack) 1.096s (~) 2.011s (~) 0.915s 10 1.01x
🌐 Redis Next.js (Turbopack) 1.101s (~) 2.012s (~) 0.911s 10 1.01x
💻 Local Nitro 1.112s (~) 2.006s (~) 0.894s 10 1.02x
💻 Local Express 1.115s (~) 2.006s (~) 0.891s 10 1.02x
🌐 MongoDB Next.js (Turbopack) 1.306s (~) 2.012s (~) 0.706s 10 1.20x
🌐 Turso Next.js (Turbopack) 1.321s (+2.7%) 2.015s (~) 0.695s 10 1.21x
🐘 Postgres Next.js (Turbopack) 2.005s (-2.2%) 2.316s (~) 0.311s 10 1.84x
🐘 Postgres Nitro 2.270s (+2.8%) 3.015s (~) 0.745s 10 2.08x
🐘 Postgres Express 2.332s (+4.5%) 3.014s (~) 0.682s 10 2.14x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.719s (+4.6%) 3.630s (+3.6%) 0.911s 10 1.00x
▲ Vercel Next.js (Turbopack) 2.769s (+3.2%) 3.576s (-2.4%) 0.807s 10 1.02x
▲ Vercel Express ⚠️ missing - - - -

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🌐 Starter 🥇 Next.js (Turbopack) 10.576s (~) 11.012s (~) 0.436s 5 1.00x
💻 Local Next.js (Turbopack) 10.646s (~) 11.019s (~) 0.373s 5 1.01x
🌐 Redis Next.js (Turbopack) 10.681s (~) 11.020s (~) 0.339s 5 1.01x
💻 Local Express 10.789s (~) 11.012s (~) 0.223s 5 1.02x
💻 Local Nitro 10.793s (~) 11.014s (~) 0.221s 5 1.02x
🌐 Turso Next.js (Turbopack) 12.163s (-0.6%) 13.027s (~) 0.864s 5 1.15x
🌐 MongoDB Next.js (Turbopack) 12.175s (-1.2%) 13.019s (~) 0.844s 5 1.15x
🐘 Postgres Next.js (Turbopack) 14.479s (-6.2% 🟢) 15.234s (-6.2% 🟢) 0.755s 5 1.37x
🐘 Postgres Express 20.382s (+12.5% 🔺) 21.035s (+10.5% 🔺) 0.654s 5 1.93x
🐘 Postgres Nitro 20.417s (+0.8%) 21.038s (~) 0.621s 5 1.93x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 21.212s (-1.1%) 21.959s (-1.1%) 0.747s 5 1.00x
▲ Vercel Nitro 21.681s (+1.2%) 22.500s (+1.3%) 0.819s 5 1.02x
▲ Vercel Express ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 10 parallel steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🌐 Redis 🥇 Next.js (Turbopack) 1.341s (-0.7%) 2.012s (~) 0.670s 5 1.00x
🌐 Starter Next.js (Turbopack) 1.348s (~) 2.008s (~) 0.660s 5 1.00x
💻 Local Next.js (Turbopack) 1.351s (-2.9%) 2.011s (~) 0.660s 5 1.01x
💻 Local Express 1.388s (+0.8%) 2.007s (~) 0.620s 5 1.03x
💻 Local Nitro 1.421s (+2.1%) 2.007s (~) 0.586s 5 1.06x
🐘 Postgres Next.js (Turbopack) 1.941s (+7.7% 🔺) 2.235s (+10.9% 🔺) 0.293s 5 1.45x
🌐 Turso Next.js (Turbopack) 2.124s (-3.4%) 3.016s (~) 0.892s 5 1.58x
🌐 MongoDB Next.js (Turbopack) 2.153s (+1.6%) 3.011s (~) 0.858s 5 1.60x
🐘 Postgres Express 2.459s (+1.1%) 3.013s (~) 0.555s 5 1.83x
🐘 Postgres Nitro 2.514s (-5.2% 🟢) 3.013s (~) 0.499s 5 1.87x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 4.085s (~) 4.787s (~) 0.702s 5 1.00x
▲ Vercel Next.js (Turbopack) 4.191s (+3.5%) 4.824s (~) 0.633s 5 1.03x
▲ Vercel Express ⚠️ missing - - - -

🔍 Observability: Nitro | Next.js (Turbopack)

stress test: Promise.all with 100 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🌐 Starter 🥇 Next.js (Turbopack) 6.619s (+0.7%) 7.072s (+1.7%) 0.453s 5 1.00x
🌐 Redis Next.js (Turbopack) 8.011s (-0.7%) 8.343s (+0.6%) 0.332s 4 1.21x
🐘 Postgres Next.js (Turbopack) 8.711s (-2.3%) 8.965s (-2.7%) 0.254s 4 1.32x
🐘 Postgres Express 9.098s (~) 9.518s (+2.3%) 0.420s 4 1.37x
🐘 Postgres Nitro 9.333s (+10.7% 🔺) 9.651s (+10.8% 🔺) 0.318s 4 1.41x
💻 Local Next.js (Turbopack) 13.820s (-5.7% 🟢) 14.033s (-6.6% 🟢) 0.213s 3 2.09x
💻 Local Nitro 13.857s (-3.8%) 14.099s (-3.9%) 0.243s 3 2.09x
💻 Local Express 14.203s (+3.5%) 14.350s (+2.6%) 0.147s 3 2.15x
🌐 MongoDB Next.js (Turbopack) 19.922s (-1.5%) 20.523s (~) 0.602s 2 3.01x
🌐 Turso Next.js (Turbopack) 20.005s (+0.8%) 20.526s (~) 0.521s 2 3.02x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 16.561s 17.430s 0.869s 2 1.00x
▲ Vercel Nitro 16.805s (+3.1%) 17.461s (~) 0.656s 2 1.01x
▲ Vercel Express ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Nitro

stress test: Promise.race with 100 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🌐 Starter 🥇 Next.js (Turbopack) 6.632s (-1.7%) 6.930s (~) 0.298s 5 1.00x
🌐 Redis Next.js (Turbopack) 8.568s (+0.7%) 8.987s (+1.9%) 0.420s 4 1.29x
🐘 Postgres Next.js (Turbopack) 9.413s (-2.5%) 9.629s (-4.0%) 0.217s 4 1.42x
🐘 Postgres Express 9.582s (-1.1%) 9.915s (-2.1%) 0.333s 4 1.44x
🐘 Postgres Nitro 9.970s (~) 10.273s (+2.0%) 0.303s 3 1.50x
💻 Local Nitro 15.308s (+2.0%) 15.431s (~) 0.123s 2 2.31x
💻 Local Express 15.726s (+2.8%) 16.003s (+3.3%) 0.277s 2 2.37x
💻 Local Next.js (Turbopack) 16.171s (-13.4% 🟢) 16.581s (-11.7% 🟢) 0.410s 2 2.44x
🌐 MongoDB Next.js (Turbopack) 19.764s (-1.4%) 20.537s (~) 0.773s 2 2.98x
🌐 Turso Next.js (Turbopack) 19.907s (-1.0%) 20.527s (~) 0.620s 2 3.00x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 16.524s (-16.2% 🟢) 17.019s (-15.2% 🟢) 0.495s 2 1.00x
▲ Vercel Next.js (Turbopack) 18.104s (+12.7% 🔺) 18.869s (+12.0% 🔺) 0.765s 2 1.10x
▲ Vercel Express ⚠️ missing - - - -

🔍 Observability: Nitro | 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
🌐 Starter 🥇 Next.js (Turbopack) 0.126s (-1.5%) 1.005s (~) 0.000s (+100.0% 🔺) 1.011s (~) 0.885s 10 1.00x
💻 Local Next.js (Turbopack) 0.134s (-8.8% 🟢) 1.003s (~) 0.015s (-5.0%) 1.026s (~) 0.892s 10 1.07x
🌐 Redis Next.js (Turbopack) 0.145s (+1.0%) 1.004s (~) 0.000s (NaN%) 1.014s (~) 0.869s 10 1.15x
💻 Local Express 0.172s (~) 0.993s (~) 0.014s (-2.1%) 1.021s (~) 0.849s 10 1.37x
💻 Local Nitro 0.181s (+0.6%) 0.992s (~) 0.017s (+23.0% 🔺) 1.023s (~) 0.843s 10 1.44x
🌐 MongoDB Next.js (Turbopack) 0.484s (-6.8% 🟢) 0.962s (+3.4%) 0.000s (NaN%) 1.012s (~) 0.528s 10 3.85x
🌐 Turso Next.js (Turbopack) 0.494s (+1.0%) 0.952s (-1.5%) 0.000s (-100.0% 🟢) 1.013s (-0.5%) 0.519s 10 3.93x
🐘 Postgres Next.js (Turbopack) 0.877s (-32.1% 🟢) 0.744s (-51.4% 🟢) 0.000s (+100.0% 🔺) 1.014s (-44.2% 🟢) 0.137s 10 6.96x
🐘 Postgres Nitro 1.296s (-43.6% 🟢) 1.908s (-30.4% 🟢) 0.000s (NaN%) 2.014s (-33.2% 🟢) 0.718s 10 10.30x
🐘 Postgres Express 2.193s (+64.5% 🔺) 2.852s (+67.0% 🔺) 0.000s (+Infinity% 🔺) 3.016s (+49.8% 🔺) 0.823s 10 17.42x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.615s (+0.5%) 3.306s (+3.6%) 0.282s (-24.8% 🟢) 4.034s (~) 1.419s 10 1.00x
▲ Vercel Next.js (Turbopack) 2.620s (-4.2%) 3.171s (+2.4%) 0.314s (-69.8% 🟢) 3.871s (-16.1% 🟢) 1.251s 10 1.00x
▲ Vercel Express ⚠️ missing - - - - -

🔍 Observability: Nitro | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World 🥇 Fastest Framework Wins
💻 Local Next.js (Turbopack) 6/7
🐘 Postgres Next.js (Turbopack) 6/7
▲ Vercel Nitro 4/7
Fastest World by Framework

Winner determined by most benchmark wins

Framework 🥇 Fastest World Wins
Express 💻 Local 5/7
Next.js (Turbopack) 🌐 Starter 6/7
Nitro 💻 Local 5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@adriandlam adriandlam merged commit 29967bf into main Dec 16, 2025
142 of 144 checks passed
@adriandlam adriandlam deleted the fix/nitro-duplicate-workflow-bundling branch December 16, 2025 20:04
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