Top "Replication" questions

The use of redundant resources to improve reliability, fault-tolerance, or performance.

synchronize two pg databases

I have a postgresql server process each running in my desktop and the laptop. Both servers have a database called …

postgresql replication
How to track which data block is in which data node in hadoop?

If a data block is replicated, in which data node will it be replicated to? Is there any tool to …

hadoop replication
Mongodb replica set status showing "RECOVERING"

I have setup the replica set over 3 mongo server and imported the 5 GB data. now status of secondary server showing "…

mongodb replication
Why do we need an 'arbiter' in MongoDB replication?

Assume we setup a MongoDB replication without arbiter, If the primary is unavailable, the replica set will elect a secondary …

mongodb replication
Starting over with replica configuration in mongodb

I did a mistake when configuring replica sets in mongodb. I think that what I did wrong is that I …

mongodb replication
Replication from one SQL Server Express to another

I have one SQL Server Express instance with a pretty normal well formed database. I need to have the data …

sql-server replication sql-server-express
Database Mirroring / Postgres Streaming Replication

I am not a DBA; I'm the primary developer of an enterprise database based application. I'm currently specing out some …

postgresql streaming replication database-backups
How can "set timestamp" be a slow query?

My slow query log is full of entries like the following: # Query_time: 1.016361 Lock_time: 0.000000 Rows_sent: 0 Rows_examined: 0 SET …

mysql performance replication
What's the difference between peer-to-peer and merge replication with SQL Server?

What's the difference between peer-to-peer replication and merge replication using SQL Server?

sql-server replication
Adding a replica in MongoDB throws an error

I'm trying to add a node to a replica set using rs.add("developer-ViratualBox:30103") and I'm getting the following error …

mongodb replication database-replication