ASTALAVISTA! Why Is Elasticsearch So Fast
Why is Elasticsearch so fast. On the shard level a red status indicates that the specific shard is not allocated in the cluster yellow means that the primary shard is allocated but replicas are not and green means that all shards are allocated. How Elasticsearch Search So Fast By Chestermo Analytics Vidhya Medium First for background I understand that Lucene relies upon a compressed bit array data structure akin to CONCISE. Why is elasticsearch so fast . In general you should make sure that at least half the available memory goes to the filesystem cache so that Elasticsearch can keep hot regions of the index in physical memory. Phrase queries are really fast when all the terms are uncommon - almost as fast as just AND ing the terms together. For more details on it you will have to go in depth on the implementation of Lucene and inverted index. Disclaimer I work for a solution in Elasticsearchs addressable market Id like to draw the analogy of Iaas vs PaaS to fully answer t...