Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
We have a production system that uses MongoDB as it’s data storage and writes a lot of the actions it completes there.
I’d like to run some reports to see what is going on and if this was a MSSQL DB I’d have a replicated server setup so I didn’t cause any locks that might effect the live system.
Is this necessary in MongoDB?
I was considering adding a Hidden server that could be used to run queries from, but I haven’t investigated that in any detail.
Obviously any queries you run for reporting are going to add load to the server. Depending on what types of queries your reports are running will affect how big of an impact this will have. It is definitely possible to set up a dedicated secondary for the sole purpose of reporting. You could then make a direct connection to that secondary and do slaveOk queries to run your reports. This page has information on how to set up a hidden replica set member: http://www.mongodb.org/display/DOCS/Replica+Set+Configuration#ReplicaSetConfiguration-Memberoptions.