Apache SolrMetricsolr_filter_cache_hit
The number of cache hits per second.Dimensions:None
Available on:
Datadog (1)
Datadog (1)Interface Metrics (1)
Knowledge Base (9 documents, 0 chunks)
referenceMonitoring Solr | Apache Solr Reference Guide 8.11126 wordsscore: 0.85This is an index/navigation page from the official Apache Solr Reference Guide that provides an overview of monitoring and administration capabilities. It links to detailed documentation on metrics reporting, logging, JMX integration, Prometheus/Grafana monitoring, and distributed tracing for Solr.
documentationCaches and Query Warming :: Apache Solr Reference Guide2732 wordsscore: 0.85Official Apache Solr documentation covering cache management and query warming mechanisms. Details the three main cache types (filter cache, query result cache, document cache), their configuration parameters, and performance implications for Solr implementations.
other[SOLR-15859] Add handler to dump filter cache - ASF Jira426 wordsscore: 0.72This is a Jira feature request (SOLR-15859) proposing a new handler to inspect and dump the contents of Apache Solr's filterCache. The issue discusses various metrics and diagnostics that would be valuable for understanding cache performance, including hit rates, evictions, memory usage, and timestamp information for cache entries.
referenceSolr | OpsRamp Documentation933 wordsscore: 0.95This OpsRamp documentation page provides comprehensive reference documentation for Apache Solr monitoring templates covering cache metrics (document cache, filter cache, query result cache) and JVM metrics (buffers, garbage collector, memory, operating system). It lists supported metrics with detailed descriptions, units, and display names for monitoring Solr 7.5.3.
best practicesSearch index filtering best practices | DataStax Enterprise | DataStax Docs605 wordsscore: 0.72This page provides best practices for search query optimization in DataStax Enterprise Search (DSE Search), which is built on Apache Solr. It focuses on query filtering strategies, cache optimization, and performance tuning techniques for Solr-based search indexes.
referenceQuery Settings in SolrConfig | Apache Solr Reference Guide 8.9-DRAFT2253 wordsscore: 0.85Official Apache Solr documentation covering cache configuration in solrconfig.xml, including filterCache, queryResultCache, and documentCache. Explains cache implementations (CaffeineCache, LRUCache, FastLRUCache, LFUCache), their sizing parameters, eviction policies, and performance monitoring through the Solr Admin UI Statistics page.
troubleshootingWhat is Solr query result cache working mechanism? - Stack Overflow577 wordsscore: 0.72This Stack Overflow Q&A discusses the Solr query result cache mechanism, specifically clarifying whether it stores full query results or filtered results. The answer explains that queryResultCache stores only queryResultWindowSize document IDs (not entire result sets) and distinguishes this from filterCache behavior, providing operational context for understanding cache performance.
best practicesSolrPerformanceFactors - Solr - Apache Software Foundation2049 wordsscore: 0.75This page covers Apache Solr performance optimization factors including schema design, configuration tuning, caching strategies, and indexing considerations. It provides detailed guidance on mergeFactor settings, cache autowarming, optimization timing, and commit frequency tradeoffs that directly impact system performance.
blog postMonitoring Apache Solr and Lucidworks with Zabbix - Lucidworks860 wordsscore: 0.85This blog post provides practical guidance on monitoring Apache Solr and Lucidworks in production using Zabbix monitoring software. It covers how to use JMX interfaces to collect metrics and provides specific examples of important graphs and monitoring configurations including cache statistics, search performance, document operations, and system health checks.
Related Insights (2)
Cache Configuration Mismatch Causing Memory Pressurewarning
Oversized or undersized caches (filterCache, queryResultCache, documentCache) waste memory or reduce hit rates, leading to OOM errors or degraded query performance. Low cache hit ratios indicate wasted memory allocation.
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Cache Hit Ratio Drop as Leading Indicatorwarning
Sudden drops in cache hit ratios (filterCache, queryResultCache, documentCache) precede query performance degradation. This indicates cache invalidation events, configuration changes, or query pattern shifts that require investigation.
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