mysql synchronous replication

Troubleshooting of mysql semi-synchronous replication and mysql Synchronization 1. BackgroundBy default, online mysql replication is asynchronous. In extreme cases, when switching between the master and slave databases, there is a

1. Semi-synchronous replication: by default, replication is asynchronous, that is, the client submits the transaction to the master database, after the master database writes the transaction to the storage engine and binlog, it immediately returns the transaction to the client to indicate that the transaction is successfully executed. If the transaction has not b

slaveMaster:dumpSlave:io_thread,sql_threadCan be started individuallymysql> start slave io_threadmysql> start slave sql_thread650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/83/A2/wKioL1d5GneiMxnOAACG0zBjF84685.jpg "border=" 0 " Name= "" "637" height= "209" >5 semi-synchronous replication should specify a synchronization time-out and, once timed out, downgrade to asynchronous replicationMySQL ma

Tags: completing the Generate Plugins Status tool parameters MySQL database size1 OverviewSemi-synchronous replication refers to a subset of host synchronous replication, and another part of the host asynchronous replicationThe logic of synchronization is that the user write

...) mysql>grantreplicationslave,replicationclienton *.*to ' copy ' @ ' 192.168.0.50 ' identifiedby ' 123.com '; mysql>changemastErtomaster_host= ' 192.168.0.50 ', master_user= ' copy ', master_password= ' 123.com ', master_log_file= ' master-bin.000001 ', master_log_pos=106; mysql>startslave; mysql>shows

The last article on MySQL replication focuses on the design points and constraints of the two-way synchronous replication architecture. The dual-master, dual-write, and bidirectional synchronization scenarios of databases are restricted, mainly considering data integrity, consistency, and conflict avoidance. For the la

, it will automatically turn over to the semi-synchronous mode for data transfer![] (Http://i2.51cto.com/images/blog/201805/02/7687411e99cbec08048536a5589ece39.png?x-oss-process=image/watermark, size_16,text_qduxq1rp5y2a5a6i,color_ffffff,t_100,g_se,x_10,y_10,shadow_90,type_zmfuz3pozw5nagvpdgk=) Close IO thread A transaction on Master waits for 10s to become asynchronous from the semi-synchronous state. [] (

In the previous article "mud: learning the principles of mysql database master-slave synchronous replication", we introduced the basic principles of mysql master-slave replication. In this article, we will test the master-slave synchrono