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es is developed based on java, Use the new version of es Minimum requirement jdk1 8， Client, interface tools, Official website: https://www.elastic.co/cn/ ES is document oriented and everything is json Documents are pieces of data, The type is the same as that of relational database (int, double,...) An index, similar to a database, is a ve ...

definition In addition to retrieval, ES also provides statistical analysis of data, with high real-time performance Bucket aggregation Filter out documents that meet specific criteria: GET kibana_sample_data_flights/_search { "size": 0, "aggs": { "dest": { "terms": { "field": "DestCountry" } } } } The ...

Combined query bool (Boolean Query) Many times, we may want to search through multiple conditions. For example, Douban searches a movie. We may limit the query according to multiple conditions such as the type, year and Douban score of the movie. In fact, this scenario is a scenario in which multiple search conditions and multiple words match ...

This article was first published in the official account of the geek barracks. Original addressThe best way to learn elastic search (hereinafter referred to as ES) is to practice more. In this series of tutorials, I will use the small project "online bookstore" throughout each chapter. The background of this project is very simple. Ea ...

ELK - log collection system 1. What logs do you want to collect? ① System log – prepare for monitoring ② Service log – database – MySQL – slow query log, error log and normal log ③ Business log – log4j (business log must be collected) Note: log4j - data business log of Java class (1) To be targeted to collect ...

1, Introduction With the help of the official website Introduction to Elasticsearch You know, for search (and analysis) Elasticsearch is the core distributed search and analysis engine of Elastic Stack. Logstash and Beats help collect, aggregate and enrich your data and store it in elasticsearch. With Kibana, you can interactively explore, ...

Anti shake and throttling Anti shake The same function is triggered multiple times in a short time, and only the first / last time is executed. For example: a kitten is shivering with cold. Press it hard and it won't tremble. You can press and hold it before it shakes, or after it shakes for a long time Common anti shake /** * Common implemen ...

In the first two articles, we introduced some commands commonly used in daily cluster operation and maintenance from the cluster and node layers. Next, we will continue to introduce several commonly used cluster operation and maintenance API s from the index level.Index related commands1. View basic information of cluster indexGET _cat/indices ...

1, ik remote Thesaurus The previous article explained ik as a whole, including the remote dynamic thesaurus. However, the previous article is based on nginx + static txt file. After modifying the file with nginx, the last modified attribute is automatically added. This method is also officially recommended: Officials recommend using another t ...

1, ElasticsearchRestTemplate Previously, I learned how the es rest interface operates es, and also learned the fragmentation and capacity expansion of ES. I explained several common word splitters. If you like, you can see other articles in this column. This article will mainly use ElasticsearchRestTemplate to operate es in SpringBoot. I wrot ...