Redis or MongoDB?

[Programulya]

Hi all,
Could someone please explain why author use Redis as default database storage?
Is it reliably?
I'm going to use NodeBB and try to decide Redis/MongoDB or mix case.

[a_5mith]

@Programulya Redis is quicker, but relies on the amount of RAM you have available. Mongo uses diskspace, so is slower. With redis set up correctly, it's just as stable as any other, it depends how often redis saves your DB. I've had no issues with it.

[Programulya]

So, for forum using NodeBB it will be okey? How many RAM memory I should setup for forum like this?

[a_5mith]

@Programulya 512mb of RAM will be fine. Someone like Digital Ocean offer hosting from $5USD per month.

[Programulya]

@a_5mith yes, I have account, but I'm still not sure about using Redis, because I will have a lot of images Thanks for your answers!

[a_5mith]

@Programulya Images go on the hard drive, so neither redis or mongo will help there.

[Programulya]

Oh, yeah. You're absolutely right

[gurayc]

@a_5mith

I chose Digital Ocean server with redis db. There is no problem when 60 users are online.