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Note: please correct any mistakes. This blog is for learning reference only. Come on! 1, First acquaintance with electricsearch 1.1 INTRODUCTION   elasticsearch is a Lucene based search server. It provides a distributed multi-user full-text search engine based on RESTful web interface. Elasticsearch is developed in the Java lan ...

Premise: This article is written based on elasticsearch 6.4.2. There may be slight differences between the two versions Document, index, type attributeexplaindocumentThe data information to be stored, such as employee data. An employee data can represent a documentindexThe behavior of storing documents in elastic search is called Indexing; An ...

IK word splitter is a word splitter about Chinese. If there is IK word splitter, naturally there are other word splitters. For example, pinyin word splitter is for pinyin word segmentation, and letter word segmentation is for letter word segmentation. A good way for ES is to expand these functions in the form of plug-ins. Download and installa ...

ES Module The blogger will continue to update various front-end technologies. If you like, you can pay attention to, collect and praise the blogger's articles. Basic characteristics of ES Module ESM automatically adopts strict mode and ignores' use strict 'Each ES Module runs in a separate private scopeESM requests external JS modules throug ...

Background: ElasticSearch Java client connection ElasticSearch Based on this blog ElasticSearch: brief introduction and deployment of ElasticSearch and Kibana using Docker This blog simply deploys ElasticSearch Brief introduction to index concept Generally speaking, the index has two parts of speech, name and verb. Verb indexing, indexing a ...

1. How to synchronize database with ES We all know that ES is a search engine. Its search speed is much faster than that of the database. How to synchronize the contents of the database to es? The middleware Logstash is needed at this time. Logstash is an open source data collection engine with real-time pipeline function. Logstash can ...

1. Load external profile 1.1 Input config filebeat.config.inputs: enabled: true path: inputs.d/*.yml inputs. Example of configuration file in D Directory: - type: log paths: - /var/log/mysql.log scan_frequency: 10s - type: log paths: - /var/log/apache.log scan_frequency: 5s 1.2 Module config filebeat.config.modu ...

1, Background When we use logstash to read data from the outside, the values read by default are of string type. Suppose we need to modify the type of field value at this time. If we change from string to integer, or delete the field, modify the name of the field, give a default value to the field, we can use mutate filter at this time. 2 ...

Inverted index At present, the mainstream index technology of full-text search engine is the way of inverted index. The traditional way to save data is: record → word. The way of storing data in inverted index is: word → record. The inverted index is constructed based on word segmentation technology. When each record saves data, it w ...

1. Premise preparation 1.1 online installation jdk 1.1.1 is jdk installed The operation of Elasticsearch requires a JDK environment, but the version above Elasticsearch 7 will bring its own JDK (the installation package has changed from tens of megabytes to hundreds of megabytes, which is why), and the version above Elasticsearch 7 needs jdk ...