NoSQL

We're running Mongo and PHP on the same server. Everytime a request is done and it's a pretty heavy one (lots of queries and a few heavy ones) I can clearly see that on the machine httpd (PHP) and mongod together take up 100% CPU (lets say, httpd takes 60% and mongo takes 40%). We run on 8 cores, but for some reason it's not using different cores. I would expect

2013/05/22 -- Igor

2013/05/22 -- Christopher Wirt

2013/05/22 -- Alain RODRIGUEZ

Hi! Until recently we used a single replicaset (two mongodbs and one arbiter, each on a different server). As the data volume grew we ran into performance problems (mainly io related) so we decided to switch to a sharded setup. We have now four dedicated servers with the following setup:

I want to expire data from sharded cluster by setting TTL. However , I set expireAfterSeconds is 1000,but the data is expired less than one minute(60 seconds)? I start one cluster like this: start config server : ./mongod --configsvr --port 10000 --dbpath ../data/config (ip is 192.168.111.211)

Hello, I have a cluster in sharding with 6 servers, one mongos, one mongosvr and 4 shards. I want to convert each shard to replicat shard... I stopped mongos I stopped for each shard the mongod and I start it. After I started the mongos... I did this following command : db.getSiblingDB("config").shar ds.save({_id:"", host:"/member1,member2 ,..."})

Hello, I have a cluster in sharding with 6 servers, one mongos, one mongosvr and 4 shards. I want to convert each shard to replicat shard... I stopped mongos I stopped for each shard the mongod and I start it. After I started the mongos... I did this following command : db.getSiblingDB("config").shar ds.save({_id:"", host:"/member1,member2 ,..."})

Hello, i'm building a chat server application using node.js and now i need to save chat transcripts on mongodb. If i was in classic relational databases, i would append every new message to a messages table but is there a "better" way to do it in nosql database? Maybe it would be better to have a single json structure that is updated

2013/05/22 -- Brian Tarbox