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[expand - 1 more] - Solr performing Calculations vs. Pulling data Values Directly From DB Question - Solr - [mail # user]
...Right.An HTTP cache will save the last calculated value. You can set an retention limit, like only cache an answer for 4 hours. If a request comes in and the cached value is older than that ...
   Author: Walter Underwood , 2018-10-18, 22:57
CMS GC - Old Generation collection never finishes (due to GC Allocation Failure?) - Solr - [mail # user]
...We run a big cluster with 8 GB heap on the JVMs. When we used CMS, I gave 2 GB tothe new generation. Solr queries make a ton of short-lived allocations. You want all of thatto come from the ...
   Author: Walter Underwood , 2018-10-04, 03:22
Multiple Queries per request - Solr - [mail # user]
...Have a middle tier that does all the queries and returns combined results. Or do all the queries simultaneously, like AJAX.I think it is still true with SolrJ that async, parallel queries to...
   Author: Walter Underwood , 2018-10-02, 15:44
Opinions on index optimization... - Solr - [mail # user]
...Don’t optimize. The first article isn’t as clear as it should be. The important sentence is "Unless you are running into resource problems, it’s best to leave merging alone.”I’ve been runnin...
   Author: Walter Underwood , 2018-10-02, 14:28
Telegraf monitoring for Solr Cluster - Solr - [mail # user]
...I’m still learning Telegraf/InfluxDB, but I like it so far. Does anybody have experience adding simple URL-based probes? For example, I’d like to graph this for each collection.http://myclus...
   Author: Walter Underwood , 2018-09-26, 17:10
SOLR Index Time Running Optimization - Solr - [mail # user]
...How long does the query take when it is run directly, without Solr?For our DIH queries, Solr was not the slow part. It took 90 minutesdirectly or with DIH. With our big cluster, I’ve seen in...
   Author: Walter Underwood , 2018-09-26, 16:54
to cloud or not to cloud - Solr - [mail # user]
...Cloud is very useful if you shard or need near real-time indexing.For non-sharded,  non real time collections, I really like master/slave.The loose coupling between master and slave mak...
   Author: Walter Underwood , 2018-09-26, 15:50
Java version 11 for solr 7.5? - Solr - [mail # user]
...We’ve been running G1 in prod for at least 18 months. Our biggest clusteris 48 machines, each with 36 CPUs, running 6.6.2. We also run it on our4.10.4 master/slave cluster.wunderWalter Under...
   Author: Walter Underwood , 2018-09-26, 15:08
Solr 7.2.1 Collection Backup Performance issue - Solr - [mail # user]
...I don’t know how well it worked, but for a while, I did this to warm up the file buffers.It should be OK if RAM is bigger than data. Though “cat” probably opens the files withthe hint that i...
   Author: Walter Underwood , 2018-09-21, 19:59
Query with exact number of tokens - Solr - [mail # user]
...How about sorting the tokens in alphabetical order both for indexing and query,then using the sentinel trick.Source text: CENTURY BANCORP, INCSolr text: SENTINEL bancorp century inc SENTINEL...
   Author: Walter Underwood , 2018-09-21, 15:34