Add AI-powered conflict resolution to backport workflow by TooTallNate · Pull Request #1693 · vercel/workflow

TooTallNate · 2026-04-10T23:44:38Z

Summary

When the backport cherry-pick to stable has merge conflicts, the workflow now attempts to resolve them automatically using opencode before falling back to manual instructions.

Flow

cherry-pick succeeds → push directly to stable (unchanged)
          ↓ (conflict)
   opencode resolves conflicts
          ↓ (success)
   create PR targeting stable for human review
          ↓ (failure)
   comment with manual resolution instructions (unchanged)

Changes

.github/workflows/backport.yml: Restructured to detect clean vs conflict outcomes. On conflict: installs the opencode CLI, configures Vercel AI Gateway credentials, runs opencode run with Claude Opus to resolve conflicts, then creates a PR for human review.
AGENTS.md: Updated backporting section to document the AI resolution step.

Setup required

Add the AI_GATEWAY_TOKEN repository secret with a Vercel AI Gateway API key.

Signed-off-by: Nathan Rajlich <n@n8.io>

vercel · 2026-04-10T23:44:38Z

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Project	Deployment	Actions	Updated (UTC)
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changeset-bot · 2026-04-10T23:44:48Z

⚠️ No Changeset found

Latest commit: 2593999

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github-actions · 2026-04-10T23:44:49Z

🧪 E2E Test Results

❌ Some tests failed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	923	0	67	990
✅ 💻 Local Development	822	0	168	990
✅ 📦 Local Production	898	0	182	1080
✅ 🐘 Local Postgres	898	0	182	1080
❌ 🌍 Community Worlds	133	74	24	231
✅ 📋 Other	228	0	42	270
Total	3902	74	665	4641

❌ Failed Tests

🌍 Community Worlds (74 failed)

mongodb (7 failed):

hookWorkflow is not resumable via public webhook endpoint | wrun_01KNX1VMS0B0SX5DP026BEFT8Q
webhookWorkflow | wrun_01KNX1VXY3PJH2AA3N8JCA3B4R
fetchWorkflow | wrun_01KNX1ZDPDJBSYPXVS6KE8SPQ1
concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KNX24096SXFVVAE9MNTQYHNX
health check (queue-based) - workflow and step endpoints respond to health check messages
health check (CLI) - workflow health command reports healthy endpoints
resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KNX2B3AV28Y5X8B3766V9YRQ

redis (7 failed):

hookWorkflow is not resumable via public webhook endpoint | wrun_01KNX1VMS0B0SX5DP026BEFT8Q
webhookWorkflow | wrun_01KNX1VXY3PJH2AA3N8JCA3B4R
fetchWorkflow | wrun_01KNX1ZDPDJBSYPXVS6KE8SPQ1
concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KNX24096SXFVVAE9MNTQYHNX
health check (queue-based) - workflow and step endpoints respond to health check messages
health check (CLI) - workflow health command reports healthy endpoints
resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KNX2B3AV28Y5X8B3766V9YRQ

turso (60 failed):

addTenWorkflow | wrun_01KNX1TEQPPQZYKZKKZWPDNT7H
addTenWorkflow | wrun_01KNX1TEQPPQZYKZKKZWPDNT7H
wellKnownAgentWorkflow (.well-known/agent) | wrun_01KNX1VP3H26FYYF4645HAFTK5
should work with react rendering in step
promiseAllWorkflow | wrun_01KNX1TNY331GH1AW67YM1905Y
promiseRaceWorkflow | wrun_01KNX1TTWTRTZY5QCPP617P2A7
promiseAnyWorkflow | wrun_01KNX1TXD0ZB0N6FJ8DPCJ6BRH
importedStepOnlyWorkflow | wrun_01KNX1W2SMVJXWM68WT8ZB9SDW
hookWorkflow | wrun_01KNX1V9HR2B8AH5D124Q1XY64
hookWorkflow is not resumable via public webhook endpoint | wrun_01KNX1VMS0B0SX5DP026BEFT8Q
webhookWorkflow | wrun_01KNX1VXY3PJH2AA3N8JCA3B4R
sleepingWorkflow | wrun_01KNX1W4355H3C8ZCY03TK9WX4
parallelSleepWorkflow | wrun_01KNX1WGPJJ7QHG0F11796CJ8W
nullByteWorkflow | wrun_01KNX1WNCN490P3W6BFQDJ603N
workflowAndStepMetadataWorkflow | wrun_01KNX1WQPAKV7DYF34C696N5FE
fetchWorkflow | wrun_01KNX1ZDPDJBSYPXVS6KE8SPQ1
promiseRaceStressTestWorkflow | wrun_01KNX1ZHC7S9TNJRCG5XFFS0ZH
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 catchability FatalError can be caught and detected with FatalError.is()
error handling not registered WorkflowNotRegisteredError fails the run when workflow does not exist
error handling not registered StepNotRegisteredError fails the step but workflow can catch it
error handling not registered StepNotRegisteredError fails the run when not caught in workflow
hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_01KNX23AQPK4895N3R4GY5V052
concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KNX24096SXFVVAE9MNTQYHNX
hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01KNX24Q9JKKQ9TYN7Z0KCKF9E
stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01KNX25C2EF07P5394XP7HGF5S
stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01KNX25NNMZYXQ97GBEV1SP6JA
closureVariableWorkflow - nested step functions with closure variables | wrun_01KNX25WSYYJGVM5K8XPM6GH2Y
spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01KNX25ZW1B6R0080Z3R4WX8N5
runClassSerializationWorkflow - Run instances serialize across workflow/step boundaries | wrun_01KNX26AFD5KMRS8A0KJ5E9RPF
health check (queue-based) - workflow and step endpoints respond to health check messages
health check (CLI) - workflow health command reports healthy endpoints
pathsAliasWorkflow - TypeScript path aliases resolve correctly | wrun_01KNX26T5QDKBEGS9NEW93H8PX
Calculator.calculate - static workflow method using static step methods from another class | wrun_01KNX270DSFNCHGJGTBBDTGJAB
AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01KNX277M418ME0KJZS6S5DXEP
ChainableService.processWithThis - static step methods using this to reference the class | wrun_01KNX27F52NYV2J7HSVVBHWFNT
thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01KNX27NJKGAYVNC7R3W9Z6BCV
customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01KNX27XNW1M50VKEXQZSN2VHT
instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01KNX284YZ1M3E43E13BC6V1E7
crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01KNX28GT4A5YJ3XZBHA3FKKAT
stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01KNX28RZB7122R7KEWHKPK263
cancelRun - cancelling a running workflow | wrun_01KNX29032EGWR5ADB9KANMXH6
cancelRun via CLI - cancelling a running workflow | wrun_01KNX299VG2STTZNV9SYKFCWR1
pages router addTenWorkflow via pages router
pages router promiseAllWorkflow via pages router
pages router sleepingWorkflow via pages router
hookWithSleepWorkflow - hook payloads delivered correctly with concurrent sleep | wrun_01KNX29PD4RDPRDR8Z9E45PWNE
sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01KNX2ABZZYFZHV08JRNSAR41N
sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01KNX2AQHYSEJQSMBKFNYRT1R8
importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01KNX2AYJ3RDECB5FHKPY4VCTW
metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01KNX2B0VN9S4P6004YCJ0DMR3
resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KNX2B3AV28Y5X8B3766V9YRQ
getterStepWorkflow - getter functions with "use step" directive | wrun_01KNX2B6WPY03XMAGRDK6Z4XXZ

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	83	7
✅ example	83	7
✅ express	83	7
✅ fastify	83	7
✅ hono	83	7
✅ nextjs-turbopack	88	2
✅ nextjs-webpack	88	2
✅ nitro	83	7
✅ nuxt	83	7
✅ sveltekit	83	7
✅ vite	83	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	76	14
✅ express-stable	76	14
✅ fastify-stable	76	14
✅ hono-stable	76	14
✅ nextjs-turbopack-canary	63	27
✅ nextjs-turbopack-stable	82	8
✅ nextjs-webpack-canary	63	27
✅ nextjs-webpack-stable	82	8
✅ nuxt-stable	76	14
✅ sveltekit-stable	76	14
✅ vite-stable	76	14

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	76	14
✅ express-stable	76	14
✅ fastify-stable	76	14
✅ hono-stable	76	14
✅ nextjs-turbopack-canary	63	27
✅ nextjs-turbopack-stable	82	8
✅ nextjs-webpack-canary	63	27
✅ nextjs-webpack-stable	82	8
✅ nitro-stable	76	14
✅ nuxt-stable	76	14
✅ sveltekit-stable	76	14
✅ vite-stable	76	14

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	76	14
✅ express-stable	76	14
✅ fastify-stable	76	14
✅ hono-stable	76	14
✅ nextjs-turbopack-canary	63	27
✅ nextjs-turbopack-stable	82	8
✅ nextjs-webpack-canary	63	27
✅ nextjs-webpack-stable	82	8
✅ nitro-stable	76	14
✅ nuxt-stable	76	14
✅ sveltekit-stable	76	14
✅ vite-stable	76	14

❌ 🌍 Community Worlds

App	Passed	Failed	Skipped
✅ mongodb-dev	6	0	0
❌ mongodb	56	7	8
✅ redis-dev	6	0	0
❌ redis	56	7	8
✅ turso-dev	6	0	0
❌ turso	3	60	8

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	76	14
✅ e2e-local-postgres-nest-stable	76	14
✅ e2e-local-prod-nest-stable	76	14

📋 View full workflow run

❌ Some E2E test jobs failed:

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

Check the workflow run for details.

github-actions · 2026-04-10T23:44:53Z

📊 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	0.043s (+3.8%)	1.005s (~)	0.962s	10	1.00x
🐘 Postgres	Express	0.060s (+5.0% 🔺)	1.011s (~)	0.950s	10	1.39x
🐘 Postgres	Nitro	0.062s (-6.9% 🟢)	1.024s (+1.3%)	0.962s	10	1.44x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.201s (-22.3% 🟢)	2.355s (+30.8% 🔺)	2.154s	10	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.108s (-3.7%)	2.010s (~)	0.901s	10	1.00x
💻 Local	Nitro	1.131s (~)	2.006s (~)	0.875s	10	1.02x
🐘 Postgres	Express	1.153s (~)	2.009s (~)	0.856s	10	1.04x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.794s (-9.5% 🟢)	3.419s (-11.5% 🟢)	1.625s	10	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	10.700s (-2.0%)	11.023s (~)	0.323s	3	1.00x
🐘 Postgres	Express	10.932s (+0.5%)	11.023s (~)	0.091s	3	1.02x
💻 Local	Nitro	10.945s (~)	11.023s (~)	0.078s	3	1.02x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	16.538s (-6.6% 🟢)	18.237s (-9.8% 🟢)	1.698s	2	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	13.912s (-4.5%)	14.023s (-6.7% 🟢)	0.111s	5	1.00x
🐘 Postgres	Express	14.545s (~)	15.027s (~)	0.483s	4	1.05x
💻 Local	Nitro	15.002s (~)	15.029s (~)	0.027s	4	1.08x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	30.773s (-13.9% 🟢)	32.243s (-14.8% 🟢)	1.470s	2	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	12.822s (-9.2% 🟢)	13.023s (-11.6% 🟢)	0.201s	7	1.00x
🐘 Postgres	Express	13.833s (-0.8%)	14.022s (-2.0%)	0.189s	7	1.08x
💻 Local	Nitro	16.783s (~)	17.030s (~)	0.247s	6	1.31x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	53.633s (-1.5%)	55.058s (-2.4%)	1.424s	2	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.191s (-7.1% 🟢)	2.008s (~)	0.817s	15	1.00x
🐘 Postgres	Express	1.264s (-0.9%)	2.009s (~)	0.744s	15	1.06x
💻 Local	Nitro	1.507s (-1.0%)	2.005s (~)	0.498s	15	1.27x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.660s (-1.1%)	4.064s (-8.8% 🟢)	1.404s	8	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.315s (-1.8%)	3.009s (~)	0.694s	10	1.00x
🐘 Postgres	Express	2.354s (~)	3.009s (~)	0.656s	10	1.02x
💻 Local	Nitro	3.091s (+4.3%)	3.885s (+3.3%)	0.795s	8	1.34x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.744s (+4.1%)	3.908s (-11.1% 🟢)	1.165s	8	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.373s (-3.3%)	4.010s (~)	0.636s	8	1.00x
🐘 Postgres	Express	3.460s (-1.0%)	4.011s (~)	0.551s	8	1.03x
💻 Local	Nitro	8.270s (-1.2%)	9.026s (~)	0.756s	4	2.45x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.603s (-16.8% 🟢)	3.837s (-22.2% 🟢)	1.234s	8	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.183s (-6.7% 🟢)	2.007s (~)	0.824s	15	1.00x
🐘 Postgres	Express	1.285s (+1.5%)	2.008s (~)	0.723s	15	1.09x
💻 Local	Nitro	1.548s (+1.5%)	2.007s (~)	0.459s	15	1.31x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.288s (-0.6%)	3.665s (-15.2% 🟢)	1.378s	9	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.265s (-4.2%)	3.008s (~)	0.743s	10	1.00x
🐘 Postgres	Express	2.354s (~)	3.009s (~)	0.655s	10	1.04x
💻 Local	Nitro	3.072s (-0.8%)	3.884s (-3.1%)	0.812s	8	1.36x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.213s (-18.1% 🟢)	3.621s (-17.5% 🟢)	1.408s	9	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.380s (-3.4%)	4.009s (~)	0.629s	8	1.00x
🐘 Postgres	Express	3.489s (-0.6%)	4.010s (~)	0.521s	8	1.03x
💻 Local	Nitro	8.912s (-4.6%)	9.275s (-7.5% 🟢)	0.364s	4	2.64x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.953s (-8.2% 🟢)	4.305s (-15.9% 🟢)	1.352s	7	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.567s (-32.3% 🟢)	1.006s (~)	0.439s	60	1.00x
🐘 Postgres	Express	0.828s (-0.7%)	1.041s (+3.4%)	0.212s	58	1.46x
💻 Local	Nitro	0.997s (+0.8%)	1.281s (+2.1%)	0.284s	47	1.76x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	8.623s (-10.8% 🟢)	10.027s (-13.2% 🟢)	1.404s	6	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.359s (-29.9% 🟢)	2.007s (-10.9% 🟢)	0.648s	45	1.00x
🐘 Postgres	Express	1.892s (-3.7%)	2.029s (-8.9% 🟢)	0.138s	45	1.39x
💻 Local	Nitro	3.076s (+1.9%)	3.924s (+9.4% 🔺)	0.848s	23	2.26x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	27.511s (-1.5%)	29.177s (-3.5%)	1.667s	4	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.794s (-28.2% 🟢)	3.008s (-27.5% 🟢)	0.213s	40	1.00x
🐘 Postgres	Express	3.929s (-2.3%)	4.217s (-5.4% 🟢)	0.288s	29	1.41x
💻 Local	Nitro	9.218s (~)	10.019s (~)	0.801s	12	3.30x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	71.396s (+0.6%)	72.692s (-1.3%)	1.296s	2	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.219s (-20.5% 🟢)	1.006s (~)	0.787s	60	1.00x
🐘 Postgres	Express	0.289s (+2.4%)	1.007s (~)	0.718s	60	1.32x
💻 Local	Nitro	0.565s (-2.7%)	1.005s (~)	0.439s	60	2.58x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.076s (+43.9% 🔺)	3.612s (+12.3% 🔺)	1.537s	17	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.346s (-30.8% 🟢)	1.005s (~)	0.660s	90	1.00x
🐘 Postgres	Express	0.495s (-1.6%)	1.007s (~)	0.512s	90	1.43x
💻 Local	Nitro	2.603s (+5.2% 🔺)	3.009s (~)	0.406s	30	7.53x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.637s (+0.6%)	4.042s (-9.8% 🟢)	1.405s	23	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.552s (-29.4% 🟢)	1.006s (~)	0.454s	120	1.00x
🐘 Postgres	Express	0.800s (+1.3%)	1.008s (~)	0.207s	120	1.45x
💻 Local	Nitro	11.299s (+1.7%)	12.028s (+1.5%)	0.729s	10	20.46x
💻 Local	Express	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.658s (+1.0%)	7.929s (-8.0% 🟢)	1.271s	16	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-

🔍 Observability: Express

Stream Benchmarks (includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.146s (-31.7% 🟢)	0.999s (~)	0.001s (~)	1.010s (~)	0.864s	10	1.00x
🐘 Postgres	Express	0.201s (-2.9%)	0.995s (~)	0.001s (~)	1.010s (~)	0.810s	10	1.38x
💻 Local	Nitro	0.202s (~)	1.004s (~)	0.012s (+2.5%)	1.018s (~)	0.816s	10	1.39x
💻 Local	Express	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.427s (-7.0% 🟢)	2.859s (+3.3%)	0.350s (-50.5% 🟢)	3.545s (-10.7% 🟢)	2.118s	10	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.480s (-21.8% 🟢)	1.005s (~)	0.003s (-12.3% 🟢)	1.019s (~)	0.539s	59	1.00x
🐘 Postgres	Express	0.614s (+1.0%)	1.003s (~)	0.004s (-19.2% 🟢)	1.022s (~)	0.408s	59	1.28x
💻 Local	Nitro	0.825s (+13.6% 🔺)	1.012s (~)	0.010s (-2.8%)	1.116s (+9.1% 🔺)	0.291s	54	1.72x
💻 Local	Express	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.192s (+1.0%)	5.808s (-1.9%)	0.234s (-14.5% 🟢)	6.459s (-2.9%)	2.268s	10	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.859s (-12.3% 🟢)	1.016s (-14.8% 🟢)	0.000s (-100.0% 🟢)	1.036s (-14.9% 🟢)	0.177s	58	1.00x
🐘 Postgres	Express	0.970s (+2.6%)	1.263s (+8.0% 🔺)	0.000s (-100.0% 🟢)	1.279s (+8.0% 🔺)	0.309s	48	1.13x
💻 Local	Nitro	1.245s (+0.5%)	2.022s (~)	0.001s (+87.5% 🔺)	2.024s (~)	0.779s	30	1.45x
💻 Local	Express	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.484s (-5.2% 🟢)	3.626s (-5.4% 🟢)	0.000s (-100.0% 🟢)	3.997s (-7.5% 🟢)	1.514s	16	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.621s (-8.0% 🟢)	2.069s (-1.5%)	0.000s (-100.0% 🟢)	2.092s (-1.0%)	0.470s	29	1.00x
🐘 Postgres	Express	1.773s (~)	2.068s (-3.2%)	0.000s (NaN%)	2.081s (-3.1%)	0.307s	29	1.09x
💻 Local	Nitro	3.581s (+2.2%)	4.165s (+1.6%)	0.000s (-71.4% 🟢)	4.168s (+1.6%)	0.587s	15	2.21x
💻 Local	Express	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.534s (-16.5% 🟢)	4.757s (-15.8% 🟢)	0.000s (-58.3% 🟢)	5.200s (-17.5% 🟢)	1.666s	12	1.00x
▲ Vercel	Nitro	⚠️ missing	-	-	-	-	-

🔍 Observability: Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	21/21
🐘 Postgres	Nitro	20/21
▲ Vercel	Express	21/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Nitro	🐘 Postgres	20/21

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)

📋 View full workflow run

❌ Some benchmark jobs failed:

Local: cancelled
Postgres: success
Vercel: failure

Check the workflow run for details.

Signed-off-by: Nathan Rajlich <n@n8.io>

Copilot

Pull request overview

This PR enhances the backport-stable automation to distinguish clean cherry-picks from conflicted ones, and—when conflicts occur—attempt AI-assisted resolution via the opencode CLI before falling back to the existing manual-resolution guidance.

Changes:

Update the backport workflow to detect clean vs conflicted cherry-picks and push directly only on clean outcomes.
On conflicts, install/configure opencode and attempt AI-based conflict resolution; if successful, push a branch and open a PR to stable for human review.
Document the new AI-assisted backport behavior in AGENTS.md.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 6 comments.

File	Description
`AGENTS.md`	Documents the new AI-assisted conflict-resolution step for backports to `stable`.
`.github/workflows/backport.yml`	Adds conflict detection, opencode-based auto-resolution, PR creation on success, and updated failure messaging on unresolved conflicts.

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.github/workflows/backport.yml

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Signed-off-by: Nathan Rajlich <n@n8.io>

Add AI-powered conflict resolution to backport workflow

a6f425b

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Use anthropic/claude-opus-4.6 model identifier

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Update .github/workflows/backport.yml

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Fix script injection in gh pr create --title

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Conversation

TooTallNate commented Apr 10, 2026

Summary

Flow

Changes

Setup required

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🧪 E2E Test Results

Summary

❌ Failed Tests

Details by Category

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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)

💻 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)

Summary

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