### What I’ve Tried: * Restarted and redeployed the service * Cleared all queued executions * No major changes were made to the project before this started happening ### Details: * **Project**: `optimistic-prosperity` * **Service**: Primary (n8n) * **Environment**: Production * **Platform**: Railway Free Tier * **Tool**: n8n (workflow automation) ### Ask: * Has anyone faced this `-1 concurrency` issue? * Is this a bug or a platform limitation? * Any way to fix or work around it on the free plan? Thanks in advance for the help

n8n Workflow Executions Queued — Showing “-1 Concurrent Executions” Limit

sxnitin

FREEOP

10 months ago

What I’ve Tried:

Restarted and redeployed the service
Cleared all queued executions
No major changes were made to the project before this started happening

Details:

Project: optimistic-prosperity
Service: Primary (n8n)
Environment: Production
Platform: Railway Free Tier
Tool: n8n (workflow automation)

Ask:

Has anyone faced this -1 concurrency issue?
Is this a bug or a platform limitation?
Any way to fix or work around it on the free plan?

Thanks in advance for the help

$10 Bounty

3 Replies

Railway

BOT

10 months ago

Hey there! We've found the following might help you get unblocked faster:

If you find the answer from one of these, please let us know by solving the thread!

phoenixauro

HOBBY

10 months ago

'-1 Concurrent Executions' means there is no configured upper limit. Which means unlimited concurrent executions for n8n.

I think your jobs are queuing because you are on the free plan and there are limited amount of cpu threads to execute jobs concurrently.

idiegea21

HOBBY

10 months ago

you need to add Redis and at least one worker to enable queue mode and control execution concurrency—or switch to a hosting environment (or plan) that supports these features.

Welcome!