Redis vs MongoDB

[baris]

Redis stores all data in RAM, MongoDB uses disk.

If you are not worried about running out of ram use Redis as it is faster.

http://stackoverflow.com/questions/5252577/how-much-faster-is-redis-than-mongodb

Some comparisons :
http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis

http://en.wikipedia.org/wiki/Redis
http://en.wikipedia.org/wiki/Mongodb

[kamov]

@baris

Many thanks!!

[meetdilip]

So am I to understand that MongoDB is good if we have lesser RAM ?

[a_5mith]

@meetdilip Yes, but page loads will be slower.

[dibu]

@baris What about LevelDB? Which is better for NoddeBB Redis or LevelDB?

[baris]

Redis is better supported than LevelDB right now, some of the LevelDB functionality isn't implemented so I wouldn't use LevelDB yet.

[Ken OKABE]

How much RAM do we need for Redis of nodeBB, say, for instance, a very active forum such as this nodeBB community forum?

[julian]

@Ken-OKABE Keep in mind memory usage goes up the longer the forum is around, since post data is kept in-memory as well.

This forum's been around for about a year -- we're using 40mb.

[Ken OKABE]

@julian said:

we're using 40mb

For this scale and period, the memory size seems very reasonable. Thanks for this great project @julian

[fr3em1nd]

sorry for necroposting, i've done my research, i would prefer mongoDB since it's just on the disk side, and not taking much memory like Redis. Memory issues are hard to deal with and messes up your whole server