定制Solr以进行优化

Question

I am newbie to java but an expert in lamp. I am using solr for my search requirement.

However i need to perform a real time search for online user + some criteria.

Current implementation: I am sending all online user ids (+ offcourse other search criteria) in post request which is very slow.

To overcome this i must do some internal code changes.

Can someone guide me how to go about this change and is there any tutorial available

Answer 1

Optimizing Solr is very easy. In fact Solr guys have themselves come up with a wiki page for boosting performance of Solr .

You can tune Solr in several ways. The basic tuning you should be looking at are as below:

• Optimize Java params passed to Solr eg: -Xmx2048m -Xms512m”(2G/512M)
• Tune the hardware which matches the requirement.
• Configure enough SolrCache which is required.
• Move Zookeeper , if using, to another disk. If the index is huge then number of I/O call from Solr to - Zookeeper will degrade the assembly performance.
• Increase the Zookeeper timeout period.
• Log GC times, I found out pauses of upto 20s on Zookeeper boxes.
• Optimize Solr search Queries.
• Use the recommendations to tune the heap from http://wiki.apache.org/solr/ShawnHeisey#GC_Tuning

Also, Have a look at the guide to Solr performance tuning .

But, in the end, do remember that Solr is not intended for real time search.