[builder] Set flow max queue concurrency to one by VaguelySerious · Pull Request #1209 · vercel/workflow

VaguelySerious · 2026-02-26T23:21:03Z

No description provided.

Signed-off-by: Peter Wielander <mittgfu@gmail.com>

changeset-bot · 2026-02-26T23:21:09Z

⚠️ No Changeset found

Latest commit: 2491558

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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github-actions · 2026-02-26T23:21:13Z

🧪 E2E Test Results

❌ Some tests failed

Summary

	Passed	Failed	Skipped	Total
❌ ▲ Vercel Production	520	3	49	572
✅ 💻 Local Development	556	0	68	624
✅ 📦 Local Production	556	0	68	624
✅ 🐘 Local Postgres	556	0	68	624
✅ 🪟 Windows	49	0	3	52
❌ 🌍 Community Worlds	110	46	9	165
✅ 📋 Other	135	0	21	156
Total	2482	49	286	2817

❌ Failed Tests

▲ Vercel Production (3 failed)

express (1 failed):

concurrent hook token conflict - two workflows cannot use the same hook token simultaneously

fastify (1 failed):

concurrent hook token conflict - two workflows cannot use the same hook token simultaneously

hono (1 failed):

concurrent hook token conflict - two workflows cannot use the same hook token simultaneously

🌍 Community Worlds (46 failed)

mongodb (1 failed):

webhookWorkflow

turso (45 failed):

addTenWorkflow
addTenWorkflow
should work with react rendering in step
promiseAllWorkflow
promiseRaceWorkflow
promiseAnyWorkflow
hookWorkflow
webhookWorkflow
sleepingWorkflow
parallelSleepWorkflow
nullByteWorkflow
workflowAndStepMetadataWorkflow
fetchWorkflow
promiseRaceStressTestWorkflow
error handling error propagation workflow errors nested function calls preserve message and stack trace
error handling error propagation workflow errors cross-file imports preserve message and stack trace
error handling error propagation step errors basic step error preserves message and stack trace
error handling error propagation step errors cross-file step error preserves message and function names in stack
error handling retry behavior regular Error retries until success
error handling retry behavior FatalError fails immediately without retries
error handling retry behavior RetryableError respects custom retryAfter delay
error handling retry behavior maxRetries=0 disables retries
error handling retry behavior workflow completes despite transient 5xx on step_completed
error handling catchability FatalError can be caught and detected with FatalError.is()
hookCleanupTestWorkflow - hook token reuse after workflow completion
concurrent hook token conflict - two workflows cannot use the same hook token simultaneously
stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
closureVariableWorkflow - nested step functions with closure variables
spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
health check (queue-based) - workflow and step endpoints respond to health check messages
pathsAliasWorkflow - TypeScript path aliases resolve correctly
Calculator.calculate - static workflow method using static step methods from another class
AllInOneService.processNumber - static workflow method using sibling static step methods
ChainableService.processWithThis - static step methods using this to reference the class
thisSerializationWorkflow - step function invoked with .call() and .apply()
customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE
instanceMethodStepWorkflow - instance methods with "use step" directive
crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context
stepFunctionAsStartArgWorkflow - step function reference passed as start() argument
cancelRun - cancelling a running workflow
cancelRun via CLI - cancelling a running workflow
pages router addTenWorkflow via pages router
pages router promiseAllWorkflow via pages router
pages router sleepingWorkflow via pages router

Details by Category

❌ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	47	0	5
✅ example	47	0	5
❌ express	46	1	5
❌ fastify	46	1	5
❌ hono	46	1	5
✅ nextjs-turbopack	50	0	2
✅ nextjs-webpack	50	0	2
✅ nitro	47	0	5
✅ nuxt	47	0	5
✅ sveltekit	47	0	5
✅ vite	47	0	5

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	45	7
✅ express-stable	45	7
✅ fastify-stable	45	7
✅ hono-stable	45	7
✅ nextjs-turbopack-canary	49	3
✅ nextjs-turbopack-stable	49	3
✅ nextjs-webpack-canary	49	3
✅ nextjs-webpack-stable	49	3
✅ nitro-stable	45	7
✅ nuxt-stable	45	7
✅ sveltekit-stable	45	7
✅ vite-stable	45	7

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	45	7
✅ express-stable	45	7
✅ fastify-stable	45	7
✅ hono-stable	45	7
✅ nextjs-turbopack-canary	49	3
✅ nextjs-turbopack-stable	49	3
✅ nextjs-webpack-canary	49	3
✅ nextjs-webpack-stable	49	3
✅ nitro-stable	45	7
✅ nuxt-stable	45	7
✅ sveltekit-stable	45	7
✅ vite-stable	45	7

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	45	7
✅ express-stable	45	7
✅ fastify-stable	45	7
✅ hono-stable	45	7
✅ nextjs-turbopack-canary	49	3
✅ nextjs-turbopack-stable	49	3
✅ nextjs-webpack-canary	49	3
✅ nextjs-webpack-stable	49	3
✅ nitro-stable	45	7
✅ nuxt-stable	45	7
✅ sveltekit-stable	45	7
✅ vite-stable	45	7

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	49	0	3

❌ 🌍 Community Worlds

App	Passed	Failed	Skipped
✅ mongodb-dev	3	0	0
❌ mongodb	48	1	3
✅ redis-dev	3	0	0
✅ redis	49	0	3
✅ turso-dev	3	0	0
❌ turso	4	45	3

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	45	7
✅ e2e-local-postgres-nest-stable	45	7
✅ e2e-local-prod-nest-stable	45	7

📋 View full workflow run

❌ Some E2E test jobs failed:

Vercel Prod: failure
Local Dev: success
Local Prod: success
Local Postgres: success
Windows: success

Check the workflow run for details.

github-actions · 2026-02-26T23:21:17Z

📊 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	🥇 Nitro	0.032s (-2.5%)	1.005s (~)	0.974s	10	1.00x
💻 Local	Express	0.035s (+6.6% 🔺)	1.006s (~)	0.971s	10	1.12x
💻 Local	Next.js (Turbopack)	0.043s (-0.7%)	1.005s (~)	0.961s	10	1.38x
🌐 Redis	Next.js (Turbopack)	0.046s (-5.9% 🟢)	1.005s (~)	0.959s	10	1.46x
🐘 Postgres	Nitro	0.054s (+31.7% 🔺)	1.011s (~)	0.957s	10	1.73x
🐘 Postgres	Express	0.056s (+10.7% 🔺)	1.011s (~)	0.955s	10	1.78x
🌐 MongoDB	Next.js (Turbopack)	0.095s (+1.7%)	1.008s (~)	0.913s	10	3.01x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	0.603s (+22.4% 🔺)	1.875s (-8.6% 🟢)	1.272s	10	1.00x
▲ Vercel	Express	0.620s (+29.3% 🔺)	1.979s (-10.9% 🟢)	1.359s	10	1.03x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.103s (~)	2.005s (~)	0.902s	10	1.00x
🌐 Redis	Next.js (Turbopack)	1.107s (~)	2.006s (~)	0.899s	10	1.00x
💻 Local	Nitro	1.108s (~)	2.006s (~)	0.898s	10	1.00x
💻 Local	Express	1.110s (~)	2.006s (~)	0.897s	10	1.01x
🐘 Postgres	Nitro	1.122s (+2.7%)	2.011s (~)	0.889s	10	1.02x
🐘 Postgres	Express	1.131s (+0.7%)	2.014s (~)	0.882s	10	1.03x
🌐 MongoDB	Next.js (Turbopack)	1.327s (+1.2%)	2.010s (~)	0.683s	10	1.20x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.354s (+10.6% 🔺)	3.089s (-4.5%)	0.735s	10	1.00x
▲ Vercel	Express	2.466s (+18.7% 🔺)	3.338s (+5.9% 🔺)	0.871s	10	1.05x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🌐 Redis	🥇 Next.js (Turbopack)	10.718s (~)	11.023s (~)	0.305s	3	1.00x
💻 Local	Next.js (Turbopack)	10.734s (~)	11.022s (~)	0.288s	3	1.00x
💻 Local	Nitro	10.831s (~)	11.022s (~)	0.192s	3	1.01x
🐘 Postgres	Nitro	10.838s (+1.7%)	11.043s (~)	0.205s	3	1.01x
💻 Local	Express	10.870s (~)	11.024s (~)	0.154s	3	1.01x
🐘 Postgres	Express	10.889s (~)	11.042s (~)	0.153s	3	1.02x
🌐 MongoDB	Next.js (Turbopack)	12.304s (+0.8%)	13.024s (~)	0.720s	3	1.15x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	18.447s (+11.7% 🔺)	19.345s (+9.8% 🔺)	0.898s	2	1.00x
▲ Vercel	Express	18.471s (+13.0% 🔺)	19.587s (+11.9% 🔺)	1.116s	2	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🌐 Redis	🥇 Next.js (Turbopack)	26.870s (~)	27.050s (~)	0.180s	3	1.00x
🐘 Postgres	Nitro	27.212s (+2.1%)	28.059s (+3.7%)	0.847s	3	1.01x
💻 Local	Next.js (Turbopack)	27.235s (~)	28.051s (~)	0.815s	3	1.01x
🐘 Postgres	Express	27.289s (~)	28.062s (~)	0.773s	3	1.02x
💻 Local	Nitro	27.504s (~)	28.052s (~)	0.549s	3	1.02x
💻 Local	Express	27.635s (~)	28.057s (~)	0.422s	3	1.03x
🌐 MongoDB	Next.js (Turbopack)	30.591s (+1.0%)	31.046s (~)	0.455s	2	1.14x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	46.231s (+6.2% 🔺)	47.672s (+6.6% 🔺)	1.441s	2	1.00x
▲ Vercel	Next.js (Turbopack)	46.825s (+15.4% 🔺)	48.101s (+15.5% 🔺)	1.275s	2	1.01x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🌐 Redis	🥇 Next.js (Turbopack)	54.312s (~)	55.093s (~)	0.781s	2	1.00x
🐘 Postgres	Nitro	55.038s (+2.0%)	55.096s (+1.8%)	0.057s	2	1.01x
🐘 Postgres	Express	55.102s (~)	55.607s (-0.9%)	0.505s	2	1.01x
💻 Local	Next.js (Turbopack)	56.806s (~)	57.102s (~)	0.297s	2	1.05x
💻 Local	Nitro	57.279s (~)	58.105s (~)	0.825s	2	1.05x
💻 Local	Express	57.688s (+0.6%)	58.108s (~)	0.420s	2	1.06x
🌐 MongoDB	Next.js (Turbopack)	61.049s (~)	61.087s (~)	0.038s	2	1.12x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	103.486s (+10.9% 🔺)	104.561s (+10.4% 🔺)	1.075s	1	1.00x
▲ Vercel	Express	103.690s (+5.1% 🔺)	105.369s (+5.4% 🔺)	1.679s	1	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Express

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🌐 Redis	🥇 Next.js (Turbopack)	1.246s (-1.7%)	2.006s (~)	0.760s	15	1.00x
🐘 Postgres	Nitro	1.344s (+4.4%)	2.010s (~)	0.666s	15	1.08x
🐘 Postgres	Express	1.381s (+2.7%)	2.011s (~)	0.630s	15	1.11x
💻 Local	Express	1.407s (+0.9%)	2.005s (~)	0.599s	15	1.13x
💻 Local	Next.js (Turbopack)	1.407s (-1.0%)	2.005s (~)	0.598s	15	1.13x
💻 Local	Nitro	1.410s (-2.1%)	2.004s (~)	0.595s	15	1.13x
🌐 MongoDB	Next.js (Turbopack)	2.155s (+1.2%)	3.008s (~)	0.853s	10	1.73x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.092s (+15.6% 🔺)	3.761s (-0.9%)	0.670s	9	1.00x
▲ Vercel	Express	3.793s (+58.2% 🔺)	4.594s (+29.8% 🔺)	0.801s	8	1.23x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Express

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.992s (+19.3% 🔺)	2.514s (+20.9% 🔺)	0.522s	12	1.00x
🐘 Postgres	Express	2.016s (+1.3%)	2.479s (-4.6%)	0.463s	13	1.01x
🌐 Redis	Next.js (Turbopack)	2.507s (+0.6%)	3.007s (~)	0.500s	10	1.26x
💻 Local	Next.js (Turbopack)	2.508s (+1.5%)	3.007s (~)	0.500s	10	1.26x
💻 Local	Nitro	2.588s (~)	3.007s (~)	0.419s	10	1.30x
💻 Local	Express	2.594s (~)	3.008s (~)	0.414s	10	1.30x
🌐 MongoDB	Next.js (Turbopack)	4.738s (+0.8%)	5.176s (~)	0.439s	6	2.38x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	4.964s (+101.2% 🔺)	5.961s (+71.5% 🔺)	0.997s	6	1.00x
▲ Vercel	Express	6.059s (+117.8% 🔺)	6.862s (+80.5% 🔺)	0.803s	5	1.22x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Express

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.528s (+3.4%)	4.146s (~)	0.618s	8	1.00x
🐘 Postgres	Nitro	3.594s (+22.9% 🔺)	4.305s (+14.3% 🔺)	0.711s	7	1.02x
🌐 Redis	Next.js (Turbopack)	4.059s (~)	4.726s (+3.1%)	0.667s	7	1.15x
💻 Local	Next.js (Turbopack)	6.807s (-8.8% 🟢)	7.517s (-6.2% 🟢)	0.710s	4	1.93x
💻 Local	Nitro	7.404s (-1.0%)	8.019s (~)	0.616s	4	2.10x
💻 Local	Express	7.650s (+1.1%)	8.021s (~)	0.371s	4	2.17x
🌐 MongoDB	Next.js (Turbopack)	9.875s (-0.8%)	10.352s (~)	0.477s	3	2.80x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	7.014s (+131.1% 🔺)	8.232s (+104.4% 🔺)	1.218s	4	1.00x
▲ Vercel	Express	14.495s (+405.8% 🔺)	15.992s (+317.4% 🔺)	1.497s	2	2.07x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🌐 Redis	🥇 Next.js (Turbopack)	1.259s (+1.5%)	2.006s (~)	0.747s	15	1.00x
🐘 Postgres	Express	1.377s (~)	2.011s (~)	0.634s	15	1.09x
🐘 Postgres	Nitro	1.401s (+6.2% 🔺)	2.009s (~)	0.609s	15	1.11x
💻 Local	Next.js (Turbopack)	1.420s (~)	2.005s (~)	0.585s	15	1.13x
💻 Local	Nitro	1.427s (~)	2.005s (~)	0.578s	15	1.13x
💻 Local	Express	1.454s (+0.9%)	2.005s (~)	0.552s	15	1.15x
🌐 MongoDB	Next.js (Turbopack)	2.152s (+1.3%)	3.009s (~)	0.857s	10	1.71x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.534s (+53.3% 🔺)	5.577s (+22.3% 🔺)	1.043s	6	1.00x
▲ Vercel	Next.js (Turbopack)	5.633s (+134.5% 🔺)	6.504s (+84.5% 🔺)	0.871s	7	1.24x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.999s (+12.5% 🔺)	2.512s (+16.6% 🔺)	0.513s	12	1.00x
🐘 Postgres	Express	2.061s (+2.8%)	2.478s (+6.8% 🔺)	0.417s	13	1.03x
🌐 Redis	Next.js (Turbopack)	2.562s (+1.7%)	3.008s (~)	0.446s	10	1.28x
💻 Local	Next.js (Turbopack)	2.654s (-2.1%)	3.007s (~)	0.353s	10	1.33x
💻 Local	Nitro	2.750s (-1.1%)	3.008s (~)	0.258s	10	1.38x
💻 Local	Express	2.836s (+2.7%)	3.007s (~)	0.171s	10	1.42x
🌐 MongoDB	Next.js (Turbopack)	4.702s (+1.2%)	5.177s (~)	0.475s	6	2.35x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	5.271s (+85.3% 🔺)	6.528s (+67.6% 🔺)	1.257s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.642s (+98.3% 🔺)	7.616s (+70.0% 🔺)	0.974s	4	1.26x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.480s (-9.6% 🟢)	4.275s (-4.0%)	0.796s	8	1.00x
🐘 Postgres	Nitro	3.718s (+36.6% 🔺)	4.455s (+18.3% 🔺)	0.737s	7	1.07x
🌐 Redis	Next.js (Turbopack)	4.080s (+1.1%)	4.724s (+3.1%)	0.644s	7	1.17x
💻 Local	Next.js (Turbopack)	7.190s (-9.1% 🟢)	8.017s (-3.0%)	0.827s	4	2.07x
💻 Local	Nitro	7.901s (-2.6%)	8.271s (-5.7% 🟢)	0.370s	4	2.27x
💻 Local	Express	8.476s (+5.8% 🔺)	9.022s (+5.9% 🔺)	0.546s	4	2.44x
🌐 MongoDB	Next.js (Turbopack)	10.073s (+1.7%)	10.686s (+3.3%)	0.613s	3	2.89x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	9.421s (+221.5% 🔺)	10.586s (+157.9% 🔺)	1.164s	3	1.00x
▲ Vercel	Express	11.194s (+316.8% 🔺)	12.311s (+256.1% 🔺)	1.117s	4	1.19x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Express

Stream Benchmarks (includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s (~)	1.002s (~)	0.011s (-3.5%)	1.017s (~)	0.870s	10	1.00x
🌐 Redis	Next.js (Turbopack)	0.153s (+3.7%)	1.000s (~)	0.001s (-14.3% 🟢)	1.007s (~)	0.854s	10	1.05x
💻 Local	Nitro	0.171s (~)	1.002s (~)	0.011s (-9.2% 🟢)	1.016s (~)	0.845s	10	1.17x
💻 Local	Express	0.175s (+4.2%)	1.003s (~)	0.012s (+1.7%)	1.018s (~)	0.842s	10	1.20x
🐘 Postgres	Nitro	0.183s (+38.7% 🔺)	0.995s (~)	0.001s (~)	1.012s (~)	0.829s	10	1.25x
🐘 Postgres	Express	0.195s (+1.6%)	0.995s (~)	0.002s (+14.3% 🔺)	1.014s (~)	0.819s	10	1.33x
🌐 MongoDB	Next.js (Turbopack)	0.504s (+0.9%)	0.946s (+0.7%)	0.002s (~)	1.009s (~)	0.505s	10	3.44x
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.194s (+12.6% 🔺)	2.717s (+11.3% 🔺)	0.126s (+73.3% 🔺)	3.475s (+15.6% 🔺)	1.282s	10	1.00x
▲ Vercel	Next.js (Turbopack)	2.603s (+11.1% 🔺)	2.906s (+1.1%)	0.155s (+136.7% 🔺)	3.713s (+0.9%)	1.110s	10	1.19x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	10/12
🐘 Postgres	Nitro	9/12
▲ Vercel	Next.js (Turbopack)	8/12

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	8/12
Next.js (Turbopack)	🌐 Redis	9/12
Nitro	🐘 Postgres	8/12

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)

📋 View full workflow run

❌ Some benchmark jobs failed:

Local: success
Postgres: success
Vercel: failure

Check the workflow run for details.

[builder] Set flow max queue concurrency to one

2491558

Signed-off-by: Peter Wielander <mittgfu@gmail.com>

VaguelySerious requested a review from a team as a code owner February 26, 2026 23:21

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VaguelySerious marked this pull request as draft February 27, 2026 00:57

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🧪 E2E Test Results

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📊 Benchmark Results

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

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github-actions bot commented Feb 26, 2026 •

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