Morning Cat

白茶清欢无别事我在等风也等你

LearningDocs

学习资料与文档

LearningDocs 学习资料与文档 JCP（Java Community Process ，Java社区进程） https://www.jcp.org/en/home/index JSR（Java Specification Requests，Java规范请求） J2EE patterns http://www.corej2eepatterns.com/ J...

Posted by BY morningcat on March 20, 2022

books-jvm

搜集的JVM资源

JVM资料 github-> books gitee-> Raindrop-Document-Java gitcode-> books-jvm

Posted by BY morningcat on March 15, 2022

网址书签

搜集的网址资源

代码平台 github github-mengzhang6 github-LovelyKoala gitee-mengzhang6 gitee-morningcat csdn-gitcode gitlab coding 学习平台慕课网慕课专栏掘金小册极客时间 segmentfault 知乎牛客网 leetc...

Posted by BY morningcat on March 4, 2022

Java elasticsearch-rest-high-level-client 学习笔记2

聚合的使用

准备数据来自elasticsearch系统学习笔记9-聚合分析 Aggregations（补充1）基本流程 RestHighLevelClient restHighLevelClient = getRestHighLevelClient(); try { // 索引名 String indexName = "cars_transactions"; // 构建聚...

Posted by BY morningcat on February 25, 2022

Java elasticsearch-rest-high-level-client 学习笔记1

查询

maven GVA  <dependency> <groupId>org.elasticsearch.client</groupId...

Posted by BY morningcat on February 25, 2022

elasticsearch系统学习笔记10

Scroll API 和 Bulk API 使用简介

Scroll API Search APIs->Request Body Search->Scroll While a search request returns a single “page” of results, the scroll API can be used to retrieve large numbers of results (or even all ...

Posted by BY morningcat on February 24, 2022

elasticsearch系统学习笔记9

聚合分析 Aggregations

概念桶（Buckets）满足特定条件的文档的集合；（类似 SQL 中的 group by）指标（Metrics）对桶内的文档进行统计计算；（类似 SQL 中的统计函数 COUNT() 、 SUM() 、 MAX() 等等）分类聚合分析的功能主要有：指标聚合桶聚合管道聚...

Posted by BY morningcat on February 24, 2022

elasticsearch系统学习笔记9-补充1

聚合分析 Aggregations

资料来源 1. 准备数据 PUT /cars_transactions { "mappings": { "_doc": { "properties": { "color": { "type": "keyword" }, ...

Posted by BY morningcat on February 24, 2022

elasticsearch系统学习笔记8

脚本语言的简单认识

字段设置成 fielddata 为 true PUT /test { "mappings": { "_doc": { "properties": { "age": { "type": "integer" }, "name": { "type": "text", ...

Posted by BY morningcat on February 24, 2022

elasticsearch系统学习笔记7

理解 term 与 match 的使用区别

数据准备 POST /blog/_doc/_bulk {"index":{"_id":1}} {"title":"安徽合肥"} {"index":{"_id":2}} {"title":"安徽宣城"} {"index":{"_id":3}} {"title":"江苏南京"} {"index":{"_id":4}} {"title":"山东肥城"} {"index":{"_id":5}} {...

Posted by BY morningcat on February 24, 2022