Statement: JDK1.8! ElasticSearch client, interface tool!
Based on Java development, the version of ElasticSearch corresponds to the core jar package of java!
Official website: https://www.elastic.co/cn/
Download address: https://www.elastic.co/cn/downloads/elasticsearch
Here is t ...
Posted by programmingjeff on Sat, 04 Dec 2021 02:21:30 +0100
Recently, I studied Sudoku and other issues (in fact, there are only two). To sum up:
Sudoku is regarded as a kind of mental work because of its complex relationship. If we want to solve this problem with computers, it is regarded as a violent problem.
For these relationships, we can use several two-dimensional arrays to store them.
For example ...
Posted by sw45acp on Fri, 03 Dec 2021 14:51:16 +0100
Title Link: https://www.luogu.com.cn/problem/P7516
General idea of the topic
Lazy, just copy the meaning of the question
For a directed graph \ (G \) with \ (n \) points \ (m \) edges (vertices are numbered from \ (1 \sim n \), define the function \ (f(u, G) \):
Initialization return value \ (cnt = 0 \), figure \ (G'= G \).
Enumerate th ...
Posted by youropensource on Wed, 24 Nov 2021 20:37:56 +0100
Server dynamic online and offline monitoring cases
In a distributed system, there can be multiple master nodes, which can dynamically go online and offline. Any client can sense the online and offline of the master node server in real time. As shown in the figure above, we hope that the client can monitor the node changes of the server in rea ...
Posted by russian_god on Fri, 19 Nov 2021 16:01:28 +0100
Elastic search -- Rest style operation index, mapping and document
ElasticSearch provides a REST API that can be accessed through HTTP and JSON.
1. Index operation
1. Basic operations of index:
PUT /Index name Create index
DELETE /Index name delete index
DELETE /* Delete all indexes
GET /Index name View specified index i ...
Posted by MikeUK on Mon, 08 Nov 2021 12:32:41 +0100
1, What is a reptile?
The essence of a crawler is an application that sends a request to a website or URL, obtains resources, analyzes and extracts useful data. Can be used to obtain text data, can also be used to download pictures or music. Crawlers can verify hyperlinks and HTML code for web crawling. Web search engines and other sites updat ...
Posted by kumschick on Fri, 22 Oct 2021 15:42:17 +0200
Blog direct in the last section!
After obtaining the web page, the next step is to analyze the data. We need to be familiar with the basic operation of regular expressions. Here is a tutorial entrance. Students without knowledge reserve can go to this channel first
You can only look at the simplest "grammar" sec ...
Posted by evilmonkey on Wed, 20 Oct 2021 09:26:00 +0200