Top "Sharding" questions

Sharding is a technique of partitioning database tables by row ("horizontally"); typically this technique requires a key to be selected that determines how the rows are to be partitioned.

Why NoSQL say traditional RDBMS is not good at scalable

I've read some article say that RDBMS such as MySQL is not good at scalable,but NoSQL such as MongoDB …

nosql rdbms sharding scalable
Database sharding and Rails

What's the best way to deal with a sharded database in Rails? Should the sharding be handled at the application …

ruby-on-rails database activerecord sharding
Does RabbitMQ call the callback function for a consumer when it has some message for it?

Does RabbitMQ call the callback function for a consumer when it has some message for it, or does the consumer …

php messaging rabbitmq sharding
Making sharding simple with Django

I have a Django project based on multiple PostgreSQL servers. I want users to be sharded across those database servers …

django postgresql sharding instagram
When to use horizontal partitioning and when to use database sharding?

I'm reading this article on Wikipedia: http://en.wikipedia.org/wiki/Shard_(database_architecture) trying to find the major difference …

database-design database-performance sharding database-partitioning
How to change the shard key

I Know that impossible to change shard key. But, when I set incorrect shard key, How to change that?

mongodb sharding
Clustering, Sharding or simple Partition / Replication

I need some advice from you experts on this subject. The thing is that we have created a Facebook application …

mysql database-design partitioning cluster-computing sharding
MongoDB: Sharding on single machine. Does it make sense?

created a collection in MongoDB consisting of 11446615 documents. Each document has the following form: { "_id" : ObjectId("4e03dec7c3c365…

mongodb sharding
mongodb reconfigure shard ports

I have restarted 2 shards on non standard ports, by chaning their .conf files. Now when I connect via mongo and …

mongodb sharding
Unable to launch mongos

I am attempting a simple sharding set up (on a single host without any replica set). However I am unable …

mongodb sharding