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Elastic Search

Java Client to write data to Elastic Search BoolQueryBuilder --> similar to SQL joins or advanced queries

Auto Complete

-- Elastic Has Bulk API which does bulk inserts/ store proceudre

Mapping

-- Dynamic mapping how it is used -- Manual Data Mapping - When insrting try to do this. --- Do the data tyoe For each document what is the data type -- Data Strucutr - try

*** Learn Ngram Concept is a so

Analyzers

-- Multiple analyzers ngram -- BKD Trees

Boost

-- Improve boosting fo name. Eg: google ads show up in first results instead of actual results. -- Java code : QueryBuilders.multiMAtchQuery(q).field("fulltext").field(field:"name",boost:3.0f);

Aggregation

-- Calcuating metrics on data , similar group by , applying percentiles Eg: How many orders placed, How many people placed orders, How many people bought this item, most selling item. --- Java Code : AggregationBuilders. : QueryBuilders.termQuery(name:"address.country.aggs",f_county));

Facetting

-- Eg: Find all iphones , similar to solr facets

Fuzzy Search

-- Java code : QueryBuilders.multiMAtchQuery(q).field("fulltext").field(field:"name",boost:3.0f).fuzziness(1); -- one letter corrections eg:

Kibana

-- Elastic Search - Data Source -- Window into Data - kibana

Beats

-- Push Model . Specific to a requirement. Eg FileBeats, winlogbeats, metricsbeats

Log Stash

-- Pull models, similar to ETL , configure data from

Questions :

Lucene Revolution BM25

What is Dynamic Mapping ?

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