Jedis remote connection to redis server error resolution
An error was reported when using jedis to remotely connect to redis today: redis.clients.jedis.exceptions.JedisConnectionException: Failed connecting to host xxx.xxx.xxx.xxx:6379 The connection failed. It is found on the Internet that it is related to a configuration in the configuration file, UTF-8...
Posted by rsanc on Sat, 25 Sep 2021 12:50:01 +0530
Redisson principle - Redis distributed lock - scheme / mechanism - renewal / release / mutual exclusion / reentry
Original website: Redisson principle - Redis distributed lock - scheme / mechanism - renewal / release / mutual exclusion / reentry_ CSDN blog Other web sites Principle analysis of Redisson's implementation of distributed lock - Zhihu Distributed locks - this is a full understanding (Redis's peUTF-8...
Posted by chwebdesigns on Sat, 25 Sep 2021 15:25:07 +0530
Machine learning 3: - Pandas - 3: File reading and storage
1. File reading and storage Learning Objectives target Understanding several file read and store operations for PandasReading and Storing Files by CSV and HDF application Implement read and storage of stock data Our data is mostly in files, so pandas supports complex IO operations, and pandas AUTF-8...
Posted by beckjoh on Sat, 25 Sep 2021 21:53:12 +0530
In September, datawhale formed a team to learn task06 SQL autumn trick
In September, datawhale formed a team to learn task 06 autumn recruit questions I was too busy, so I chose some topics to do, Woo woo Autumn move script A Supplementary learning: CREATE DATABASE in DataGrid, etc As shown in the figure next step It seems that database is similar to schema in MySUTF-8...
Posted by rajns on Sat, 25 Sep 2021 23:31:32 +0530
From getting started to mastering the use of Mybatis framework -- configuration analysis of Mybatis
Official documentation for Mybatis3 configuration(Configuration) properties(Properties) settings(Settings) typeAliases(Type alias) typeHandlers(Type (processor) objectFactory(Object factory) plugins(Plug in) environments(Environment configuration) environment(Environment variables) transactionUTF-8...
Posted by NoMansLand on Sat, 25 Sep 2021 23:49:33 +0530
ORACLE 11g Centos7 installation details agent nmhs error handling
ORACLE 11g Centos7 installation details 1, Preparatory work (1) Version environment Centos7 : CentOS Linux release 7.2.1511 (Core) Oracle11g: p13390677_112040_Linux-x86-64_1of7.zip p13390677_112040_Linux-x86-64_2of7.zip (2) Close selinux To view selinux status: getenforce sestatus -v TemporarilUTF-8...
Posted by Sravan on Sun, 26 Sep 2021 14:14:58 +0530
Deployment and implementation of MySQL
Deployment and implementation of MySQL 1, MySQL version selection For versions after MySQL 5.6, the official version is recommended.Percon a: after version 5.6, MySQL integrates Percona optimization into the official version.MariaDB: version 10.3 is very different from the official MySQL InnoDUTF-8...
Posted by KFC on Sun, 26 Sep 2021 14:14:52 +0530
Data table operation
1, Create table create table Table name( Field name type constraint, Field name type constraint ... ) #example create table students( id int unsigned primary key auto_increment, name varchar(20), age int unsigned, height decimal(5,2) ) 2, Delete table #Format 1. It is not judged whether the taUTF-8...
Posted by marketboy on Mon, 27 Sep 2021 01:12:50 +0530
Complete Oracle database statements
1, Oracle database operations 1. Create database create database databasename; 2. Delete database drop database dbname; 3. Backup database Full backup exp demo/demo@orcl buffer=1024 file=d: \back.dmp full=y; demo: user name and password buffer: cache size File: specific backup file address fullUTF-8...
Posted by sava on Mon, 27 Sep 2021 05:59:45 +0530
Elasticsearch: use Path Hierarchy Tokenizer to search the hierarchy
This article describes how to solve a common problem, which is usually called by using Elasticsearch Path hierarchy tokenizer To view different solutions through parent / child relationships or recursive relationships. What use cases can you solve with this override? Before we delve into it, leUTF-8...
Posted by VTS on Mon, 27 Sep 2021 08:04:30 +0530