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  Java rewriting redis server

  Background recently, we have studied the protocol, persistence strategy and single-threaded model of redis, and suddenly found that it matches java very well. Please poke hard at the source code here in view of the fact that redis is written in c, and java students are more laborious to read, so write the java version. Let more developers understand high sex.

  2022-06-01 16:36:57 Views: 255
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  Linux installation and configuration Redis

  First, Redis introduces that Redis is an in-memory cache database developed by Italian Salvatore Sanfilippo (net name: antirez). Redis full name is: Remote Dictionary Server

  2022-06-01 16:36:57 Views: 249
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  How to reset password in mysql database

  System version: Welcome to the MySQL monitor. Commands end with; or\ g.Your MySQL connection id is 2Server ver

  2022-06-01 16:36:57 Views: 291
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  MySQL5.7.21 enables Gtid configuration master-slave replication

  Mysql5.7.21 enables Gtid configuration master-slave replication 1. Environment: mysql master library master:10.0.0.101 172.168.1.101mysql slave library slave:10.0.0.103 172.168.

  2022-06-01 16:36:57 Views: 221
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  How to configure MariaDB password and remote access permissions for MySQL

  The term MySQL:MySQL is a relational database management system, originally an open source relational database management system, originally developed by Sweden's MySQL AB, which was adopted by Shenyang Microsystems (Sun Microsystems) in 2008.

  2022-06-01 16:36:55 Views: 224
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  Query each table size

  SELECT CONCAT (table_schema,'.',table_name) AS 'Table Name', CONCAT (ROUND (table_rows/1000000,4),' M')

  2022-06-01 16:36:55 Views: 273
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  How to maintain the server in the computer room

  Maintenance purpose: with the increase of customers' dependence on IT system, the quality of data center work will directly affect customers' business, market and even company image. The operation and maintenance management team of   data center has evolved from a former computer room manager to an IT service provider. Establish a level of service with customers

  2022-06-01 16:36:55 Views: 246
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  Save Oracle as ~

  In many application scenarios, in order to prevent the occurrence of disasters and the loss of important data, remote disaster recovery solutions are at various levels. Then the database has undoubtedly become the key protection object of the manufacturer, so let's learn the backup mechanism of Oracle. Oracle backup can be divided into logical export / import

  2022-06-01 16:36:55 Views: 225
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  Use python to operate mysql database (its "update" operation)

  #! / usr/bin/env python#-*-coding: utf-8-*-import MySQLdb# establish a connection conn = MySQLdb.connect (host='127.0.0.

  2022-06-01 16:36:55 Views: 214
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  Powershell query SQL database data

  Douzi is not familiar with the sqlps module that comes with SQL Server. It was found yesterday that a SQL module provided by Don Jones theoretically supports any ODBC Driver-compatible database (MySQL, MSSQL, Oracle, etc.)

  2022-06-01 16:36:45 Views: 204
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  Oracle function-group function

  Function classification one-line function: one input corresponds to one output,input and there is an one-to-one correspondence between output and lower group function: multiple input, but only one output. For example, sum ()-

  2022-06-01 16:36:42 Views: 230
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  Database Operation of python Learning

  Basic database operation: view storage engine: show engines; view database: show databases; or show create database oldboy\ G create database: cre

  2022-06-01 16:36:41 Views: 222
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  How to configure MongoDB replica set

  MongoDB has become the best-known NoSQL database on the market. MongoDB is document-oriented, and its schemaless design makes it popular in a variety of WEB applications. One of my favorite features is its Replica Se

  2022-06-01 16:36:41 Views: 284
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  Oracle 11g sets up automatic memory management

  Oracle 11g sets automatic memory management: ALTER SYSTEM SET MEMORY_TARGET = 1024m SCOPE=SPFILE;ALTER SYSTEM SET memory_max_t

  2022-06-01 16:36:41 Views: 280
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  Detailed introduction of SQL Server

  1. SQL Server's data storage structure SQL Server is a relational database management system developed by Microsoft Company. It has the advantages of easy to use, good scalability and high degree of integration with related software, and can span from running Microsoft Wi

  2022-06-01 16:36:41 Views: 246
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  Jdbc:mysql and oracle insert a piece of data to return the primary key

  Package org.sin.common.dao;import java.sql.CallableStatement;import java.sql.Connection;import java.

  2022-06-01 16:36:40 Views: 260
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  MySQL Learning Notes-data types and operational datasheets

  MySQL Learning Notes-data type and operation data table data type: 1. Character type 2. Integer 3. Floating point type 4. Date and time data table operation: 1. Insert record 2. Find record operation: 1. Create data Table 2. The use of constraints 1. Data type [1]

  2022-06-01 16:36:40 Views: 232
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  OGG operation and maintenance optimization script (18)-process operation class-whole process start and stop

  File: allstop.sh allstart.sh path $HOME/ggscript/ggoperatl Operation and maintenance staff encountered a situation where non-data synchronization operation and maintenance colleagues need to cooperate with database DBA maintenance to start and stop all data synchronization links during the OGG process.

  2022-06-01 16:36:40 Views: 225
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  Oracle linux 5.8install grid installation for oracle 11g rac environment

  Installation environment: operating system: oracle linux 5.864-bit cluster software: linux.x64_11gR2_grid.zip database: linux.x64_11gR2_database_1of1.zip,lin

  2022-06-01 16:36:29 Views: 242
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  Database migration in postgresql production environment

  Because the load of the existing pg environment is too high, it is necessary to migrate the current database to the new environment. If the amount of data is small, you can use method one: pgsql migrates the database to a new library in different network segments, and the new database environment master and slave high availability environment has been configured. First back up the old library $pg

  2022-06-01 16:36:29 Views: 285