Does everyone hate MongoDB?

Just as a data point, I installed MongoDB on 32-bit Ubuntu 12.04 from the Ubuntu repo. At no point during install or service startup does it say anything.

Installing from source may be different.

It seems to me that there are three camps of people when it comes to dbs - (1) The "I hate anything new" camp, (2) The "I hate anything old" camp, and finally (3) The "I will pick the best tool suited to my needs"

Those from camp (1) are the ones who hate anything that IS NOT relational or sql. The mongodb bashers would fall in this camp.

Those from camp (2) are those who hate that IS relational or sql. The "web-scale" people would flal in this camp.

Those from camp (3) are the silent majority who do their independent research, pick the right type of DB for their job, and live life happily.

For my startup (Semantics3), we deal primarily with JSON strings (which have no fixed structure). We use MongoDB because a really good use case for it is to just store JSON documents with a unique id. We only run simple queries on it - basically existential (does an id exist) or count.

We are aware that it's query performance is not as fast as that of a relational db. So we then index that data to ElasticSearch and run our advanced queries through that. We are really happy with our current system and it has been working great.

If we had some sort of "relational" data with a fixed structure I sure has hell would have picked MySQL or PostgreSQL and used Sphinx on it for indexing.

Peace.

Yes with 2.2, write locks have improved drastically. However, I'm still waiting until you can get to the point of not having to lock down whole collections (the near equivalent to a table - with caveats) as opposed to a document within the collection (the closest thing that you can call a record in db terms - with tons of caveats).

This being said, Mongodb does have really really awesome documentation and it is the right way to go for many applications and developers.

The 2GB 32-bit limit of MongoDB seems like a complete non-issue to me.

  Wed Sep 19 17:29:21 [initandlisten] MongoDB starting : pid=3765 port=27017 dbpath=/var/lib/mongodb 32-bit host=deepthought
  Wed Sep 19 17:29:21 [initandlisten] 
  Wed Sep 19 17:29:21 [initandlisten] ** NOTE: when using MongoDB 32 bit, you are limited to about 2 gigabytes of data
  Wed Sep 19 17:29:21 [initandlisten] **       see http://blog.mongodb.org/post/137788967/32-bit-limitations
  Wed Sep 19 17:29:21 [initandlisten] **       with --journal, the limit is lower
  Wed Sep 19 17:29:21 [initandlisten] 
  Wed Sep 19 17:29:21 [initandlisten] db version v2.2.0, pdfile version 4.5
  Wed Sep 19 17:29:21 [initandlisten] git version: f5e83eae9cfbec7fb7a071321928f00d1b0c5207
  Wed Sep 19 17:29:21 [initandlisten] build info: Linux domU-12-31-39-01-70-B4 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_49
  Wed Sep 19 17:29:21 [initandlisten] options: { config: "/etc/  mongodb.conf", dbpath: "/var/lib/mongodb", journal: "true", logappend: "true", logpath: "/var/log/mongodb/mongodb.log" }
  Wed Sep 19 17:29:21 [initandlisten] journal dir=/var/lib/mongodb/journal
  Wed Sep 19 17:29:21 [initandlisten] recover : no journal files present, no recovery needed
  Wed Sep 19 17:29:21 [initandlisten] waiting for connections on port 27017
  Wed Sep 19 17:29:21 [websvr] admin web console waiting for connections on port 28017