postgresql master master replication

replication: (1) Master changes the record to binary log (these are called binary log events, binary logs event);(2) Slave copies the binary log events of master to its trunk logs (relay log);(3) Slave redo the event in the trunk log and change the data to reflect its own. Describes the process of replication: The fi

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 synchronous

Master-slave replication configuration for redisI. Principles Redis's master-slave replication function is very powerful. One master can have multiple slave instances, and one slave can have multiple slave instances. In this way, a powerful multi-level server cluster archite

1. What is GTIDGTID (GlobalTransactionID) is the ID of a committed transaction and a globally unique ID. GTID is actually composed of UUID + TID. UUID is a MySQL 1. What is GTIDGTID (GlobalTransactionID) is the ID of a committed transaction and a globally unique ID. GTID is actually composed of UUID + TID. UUID is a MySQL Master database viewing semi-sync Replication View semi-s

====================================================================================Three, master and slave configuration1.postgresql Adding a replication userSu-postgres users under[Email protected] ~]$ PsqlPsql (9.2.10)Type ' help ' for help.postgres= #create role repl password ' 123456 ' login superuser replication;

-UML class diagrams are often used to describe the static structure between classes when describing the design mode. The purpose of this article is to allow the readers to understand the UML class diagrams and to figure out several relationships in the UML class diagrams. -In the subsequent design model learning process, only these two points are adequate. More advanced is beyond the scope of this article. Johnconnor design pattern note series directory Johnconnor design patterns Note (I) Wha

Mysql master ReplicationThe master-slave replication structure of MySQL is different from the master-slave replication structure. In the master-master

In the previous articles, the high-availability scheme for MySQL databases, master-slave replication, latency generation of master-slave replication, latency Detection and latency solutions (not fundamentally addressed), this master-slave

In Redis, users can have one server replicate (replicate) another server by executing the slaveof command or setting the slaveof option, which we call the replicated server as the primary server (master), The server that replicates the primary server is referred to as the slave server (slave).Suppose you now have two Redis servers with addresses 127.0.0.1:6379 and 127.0.0.1:12345, if we send the following command to the server 127.0.0.1:12345:127.0.0.

Tags: LIS sdn recover detail standby database Pat out premaster:10.0.1.114 slaver:10.0.1.116 One, yum installation 80310285 Second, the master-slave configuration 1. Master data Configuration (10.0.1.114) 1.1 Initialization /usr/pgsql-9.6/bin/postgresql96-setup Initdb 　　 1.2 Starting PostgreSQL Systemctl Start postgresql