ElasticSearch Notes

gistfile1.txt

== VM for local dev ==		
https://github.com/mmcachran/vagrant-elasticsearch-cluster

Add to WP config or in EP settings:		
define( 'EP_HOST', 'http://10.0.0.11:9200' );

Indexing your local
wp elasticpress index --setup --network-wide

== To index large multinetwork sites ==
1. Create the mapping - `wp elasticpress put-mapping --network-wide`
2. Create the network alias - `wp elasticpress recreate-network-alias`
3. Index the sites you want - `wp elasticpress index --posts-per-page=100 --url=<url to the site>

Enable Dynamic Scripting
# Enable dynamic scripting.
script.inline: true
script.indexed: true
script.disable_dynamic: false

2016 Ignite talk
https://docs.google.com/presentation/d/1KfprlUW11e6YLBpew4kl-XNa7Ry1AZsQYPn-cHpQox4/edit#slide=id.g17947aba4b_0_89

== Bash loop to reindex a list of sites ==
for i in $(cat ~/sitelist); do echo "Entering site ""$i"; wp elasticpress index --posts-per-page=10 --url="ax.help.int.dynamics.com/""$i"; done

== Commands ==
/_settings?pretty=true            Gets defined filters and analyzers
/_mapping?pretty=true             Gets current mapping
/_analyze/?text=<some text>       Analyzes text and shows tokens
/_flush                           Clear ES cache
/_search?pretty&q=_id:<post_id>   Search for posts with a certain ID.
/_cat/indices                     See all indices
/_stats                           See all and per index stats
/_search/?explain                 Explain scores for the query

== Helpful WP Plugins ==
https://github.com/10up/ElasticPress
https://wordpress.org/plugins/debug-bar/
https://wordpress.org/plugins/debug-bar-elasticpress/

== Decay Functions ==
https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-function-score-query.html#function-decay

== Scripting ==
https://qbox.io/blog/introduction-to-elasticsearch-scripting

== Aggregations ==
https://qbox.io/blog/elasticsearch-aggregations

== Combining Filters ==
https://www.elastic.co/guide/en/elasticsearch/guide/current/combining-filters.html

== Sorting ==
https://www.elastic.co/guide/en/elasticsearch/guide/current/_sorting.html

== Constant Score (featured posts query) ==
http://www.fullscale.co/blog/2013/01/24/Implementing_Featured_Results_With_ElasticSearch.html

== Word Deliminator (special characters) ==
http://www.fullscale.co/blog/2013/03/04/preserving_specific_characters_during_tokenizing_in_elasticsearch.html

== Boosting and narrowing search results ==
https://www.elastic.co/guide/en/elasticsearch/guide/current/_boosting_query_clauses.html
https://www.elastic.co/guide/en/elasticsearch/guide/current/scoring-theory.html

Boosting with a caret: https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-multi-match-query.html

== Advanced Scoring ==
http://jontai.me/blog/2013/01/advanced-scoring-in-elasticsearch/
http://www.waitingforcode.com/elasticsearch/scoring-and-boosting-in-elasticsearch/read
http://blog.tryolabs.com/2015/03/04/optimizing-elasticsearch-rescoring-queries-with-multi-type-fields/

== Stopwords ==
https://www.elastic.co/blog/stop-stopping-stop-words-a-look-at-common-terms-query

== Shingles ==
https://www.elastic.co/blog/searching-with-shingles

== Interesting Articles ==
http://gibrown.com/2013/01/24/elasticsearch-five-things-i-was-doing-wrong/

== Gists ==
https://gist.github.com/jenwachter/30fe30d6714781a3d0ed

== Pagination with custom sorting ==
https://www.elastic.co/guide/en/elasticsearch/reference/2.0/search-request-preference.html

== Cheat Sheet ==
http://elasticsearch-cheatsheet.jolicode.com/