How to use redis in n8n

[nennogabriel]

Is there any way to create a redis instance for n8n ?
I need to use redis to create a fast cache solution for some workflows. but I did not found any way to how can I install or add a redis instance to connect in the n8n instance.

[nebulon]

This is currently only possible on Cloudron if we add the redis addon to the n8n package in the CloudronManifest.json.

Given that this is a separate docker container, can you give more background for what it is used there and with which extension, so we can discuss if its worth it or if we should seek some other custom solution.

[nennogabriel]

@nebulon but in that way i should update n8n manualy? there are not a way to make it run with a enviroment variable?

[nennogabriel]

@nebulon nice... i follow the docs and get it working

I will lost automatic updates, but ok. I have redis now

[robi]

couldn't one simply use any existing redis service from another container?

[girish]

@nennogabriel we will look into adding "optional redis" in the coming releases.

[nennogabriel]

@robi yes. I didnt thing about this. simple and good.

[zonzonzon]

@nennogabriel How do you do that? Can you share with everyone how to do it? Thank you.

[Nico]

Hi !
I'm looking at your services, and wonder if Posgresql and Redis are integrated into your instances of n8n ?
Thanks !

[nebulon]

The main database for the n8n package is Postgres on Cloudron and that is integrated. Redis is not at the moment.

[Nico]

@nebulon thanks for your reply ! If I do have an external Redis, on the same hoster, but as you said, not integrate within Cloudron, should I use Redis with n8n ?

[nebulon]

You should be able to integrate your external redis via env variables https://docs.cloudron.io/apps/n8n/#custom-env

upstream docs for this are at https://docs.n8n.io/hosting/configuration/environment-variables/queue-mode/

[ikka]

hi,
i installed n8n via cloudron and need to install redis for queue, is there any way to install it with cloudron?
R

[james]

Hello @ikka
Redis needs to be added from the Cloudron staff.
I have created an internal ticket to review this.

[james]

And this seems to be a duplicate of https://forum.cloudron.io/topic/8677/how-to-use-redis-in-n8n
Merging your topic.

[robi]

Could an adjacent Redis be used by n8n since many other apps have it pre bundled?

LAMP for instance.

[girish]

I have published a new package which has optional Redis support . To get the redis credentials, open web terminal and run env | grep CLOUDRON_REDIS

[zonzonzon]

Has anyone successfully configured Redis in n8n using the information above? Could you share the environment variables needed to set it up? Thank you very much.

[umnz]

Yeah I'd also be keen to know if anyone has got Redis working and what it looks like with a n8n instance. I don't know what's going on but n8n is getting slower and slower with each release (on Cloudron) and I can't figure out why. I think it has to do with queueing and/or workers.

[zonzonzon]

@umnz The updates and n8n are still running very well. If it’s slow, you may need to check the RAM. Running many heavy tasks consumes a lot of RAM. Also, as I understand it, Redis is used for scaling when the current n8n server hits its limits and keeps freezing when receiving information from webhooks and running many heavy tasks at the same time.