Programmer Think

1 effect achieved using ES Chinese character completion Spelling correction 2 product search and automatic completion Term Advisor: term advisor. Word segmentation is performed for the input text, and word item suggestions are provided for each word segmentation Phrase suggester: phrase suggester. Based on terms, it will consider th ...

1, Thermal renewal principle elasticsearch will refresh the dictionary every 60s after the function of loading external dictionary is enabled. The specific principle code is as follows: public void loadDic(HttpServletRequest req,HttpServletResponse response){ String eTag =req.getParameter("If-None-Match"); try { OutputStream o ...

In my previous article“ Elasticsearch: Cluster backup Snapshot and Restore API ”, I will describe in detail how to backup and restore the desired index or cluster state using the snapshot and restore API interfaces officially provided by Elastic. In today's article, we will use another method to backup and restore an index in an el ...

0. Introduction The last issue introduced mac pro M1(ARM) installation: VMWare Fusion and linux(centos7/ubantu) In this issue, let's see how to install elasticsearch and kibana on m1 1. Install es and kibana based on centos How to install centos virtual machine on m1 can refer to the above blog 1.1 download This is based on the demonstrati ...

Official website documents: https://www.elastic.co/guide/en/elasticsearch/reference/7.13/cluster-health.html#cluster-health-api-request command curl -XGET 'http://ip:9200/_cluster/health?pretty' Return example: {   "cluster_name" : "xwliu07-application",   "status" : "green",   "timed_out" : false,   "number_of_nodes" : 2,   "number_of_da ...

0. Introduction The official java clients of elasticsearch include tranport client and rest high level client, but the operation of index addition, deletion, modification and query is not simple enough. Therefore, we introduce spring data elasticsearch to implement CRUD of index 1. Version correspondence Before introducing spring data, we sh ...

Recently, I have been working on the file search function (ElasticSearch for search). After searching the document at the front end, I need to preview the document in the browser and highlight and locate the search keywords. Kkfileview, an open source project selected for document preview, can preview documents well, but it does not have the fu ...

preface Note: ElasticSearch version is 5.4. Some system indexes are required in our log system. These system indexes will be added to ElasticSearch during application initialization. When there is no index data, these system indexes in ElasticSearch only have index name and some configuration information, but no mapping information. When ...

1, Elasticsearch installation 1.1 Linux Installation Download address https://www.elastic.co/cn/elastic-stackhttps://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.8.0-linux-x86_64.tar.gz Other software download pages https://www.elastic.co/cn/downloads/ Note that the java environment must be installed first (es7 requi ...

Sometimes you may have some crazy ideas and want to test your trading strategy. By using historical market data for backtesting, you can assess risk, profit and measure performance, so as to gain confidence in using this trading strategy. Of course, if you are a skilled programmer, you have no problem writing complex and heavily loaded programs ...