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Katrien1
New Participant
October 16, 2015
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AEM reading from Mongo secondaries

  • October 16, 2015
  • 2 replies
  • 1072 views

Since SP1 AEM now allows reading from MongoDB secondaries. I have a question around the configuration of this. Do I need to explicitely state in the Mongo Config to allow reading from secondaries or is this in the AEM configuration ?

Thanks in advance.

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Best answer by Katrien1

For those interested. By default your driver will set Read Preference to Primary only. To change that you need to specify this on the connection string. I am currently experimenting with adding this to my start script "-Doak.mongo.uri.readPreference:secondaryPreferred" 

2 replies

shariq_Feeroz
shariq_Feeroz
New Participant
August 3, 2016

Hi Katrien,

Is this setting -Doak.mongo.uri.readPreference:secondaryPreferred is working for you ?.

Is there any alternative way to give this setting with MongoDB connection string. We are using this below connection string in our MongoDB cluster :

mongouri="mongodb://stg_aemauthor:nPfqYMkj9mHKvghZYiZe@mongodbus2.illumina.com:27017,mongodbus:27017,mongodbapac:27017,mongodbemea:27017/$external?authMechanism\=PLAIN&replicaSet\=envrepl"

I want to read from particular mongodb. Is it configurable?

 

Thanks,

Shariq

K
Katrien1AuthorAccepted solution
New Participant
October 16, 2015

For those interested. By default your driver will set Read Preference to Primary only. To change that you need to specify this on the connection string. I am currently experimenting with adding this to my start script "-Doak.mongo.uri.readPreference:secondaryPreferred" 

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