simplivity replication

can see a change in traditional replication, observed through Binlog:#171116 19:16:57 Server ID 2 end_log_pos 16188 CRC32 0x75584212 anonymous_gtidlast_committed=50 sequence_number=51#171116 19:17:03 Server ID 2 end_log_pos 16522 CRC32 0x3b42637e anonymous_gtidlast_committed=51 sequence_number=52#171116 19:19:54 Server ID 2 end_log_pos 16851 CRC32 0x08383e43 anonymous_gtidlast_committed=52 sequence_number=53#171116 19:19:59 Server ID 2

Tags: mysql replication gtid1, must master the library two data is consistent, that is, the current from the library no data delay situation. And the main library can no longer have data updates. Standby stop slave thread: stop slave;Main Library: Show master status;Prepare library: show slave status;The relay_master_log_file of the repository is the same as the main library's file, and the Exec_master_log_pos of the repository is the same as the posi

script will be executed at each restart point. So what is the beginning of the heavy? Each time PostgreSQL transitions from file-based replay to stream-based replay, you are facing a heavy starting point. In fact, starting a stream copy again is considered to be a boot point.Once the start point arrives, you can have PostgreSQL perform some cleanup (or anything else). It is easy to clean out old xlog or trigger some notifications.The following script shows how you can clean up any xlog of the d

| 359 |TABLE_ID: -Flags:stmt_end_f| |Host2-Bin.000001 | 359 |Xid| 1 | 390 | COMMIT /*xid=423*/ | |Host2-Bin.000001 | 390 |Stop| 2 | 413 | | +------------------+-----+----------------+-----------+-------------+----------------------------------------- --------------------------+ 8Rowsinch Set(0.00Sec The following are some of the deletions are bin

-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

Androidannotations simple replication and click event (1), mui Click Event Replication Now, the most popular android development framework briefly describes how to find controls and use events. 1. This method does not need to write setconteview. @ EActivity (R. layout. activity_main)Public class MainActivity extends Activity { 2. There are basically three methods to search for controls /*** Assignment* 1. S

Oracle replication table structure and data, oracle replication Structure 1. Copy the table structure and data: Create table table_name_new as select * from table_name_old 2. copy only the table structure: Create table table_name_new as select * from table_name_old where 1 = 2; Or: Create table table_name_new like table_name_old 3. Copy table data only: if the two tables have the same structure: Ins

This article is consideredPrevious Articlethe follow-up,Java Web application, it is unavoidable to useSession, in a clustered environmentApacheWill behttpRequest Intelligent Forwarding to one of theJBoss Server. Suppose there are two ofJBoss Server:Server A,Server B,Sessionvalue inServer Aon. A user accesses a dependentSessionThe first time you access the page, theServer A, which can be properly takenSessionvalue, refresh it, if this is forwarded to theServer B,SessionIf the value is not taken,

() also has an overloaded method. The value true and false after the parameter indicates whether to append or overwrite data.Bpw = new OutputStreamWriter (fo );Bw = new BufferedWriter (bpw );// Start copyingString temp;While (temp = br. readLine ())! = Null ){System. out. println (temp );/*** Note that a line is written to the file. By default, no line breaks are generated at the end of a line. You need to manually add "\ r \ n ";* \ R indicates the carriage return, that is, moving th

updatedThen when I click on the parent button again, I find that the parental scope is updated, but the child scope is not changing.This is because the inheritance between parent-child scopes is achieved by a string number or Boolean value , which is the value of JS copy .Then run the following code:Html {{somemodel.somevalue}} {{somemodel.somevalue}} JsAngular.module (' myApp ', []). Controller (function($scope) { $scope. Somemodel ='　　　　Hello computer 'function= ' Hello Human, from parent ';

You can find that more than the original binary log content last_committed and sequence_number,last_committed represent the time the transaction commits, The number of the last transaction commit, if the transaction has the same last_committed, indicating that the transactions are within a group and can be played back in parallel. #170623 22:27:43 server ID end_log_pos 2781491 CRC32 0x1dcd41fa GTID last_committed=816 sequence_ number=817 #170623 22:27:43 server ID end_log_pos 2785

Label:mysql> stop slave; mysql> change Master to master_delay=10; #单位是秒 mysql> start slave; Mysql> show Slave status\g *************************** 1. Row *************************** slave_io_state: Waiting for Master to send event ... Sql_delay:10 sql_remaining_delay:null slave_sql_running_state:slave have read all relay logs; waiting for the SLA ve I/O thread to update it master_retry_count:86400 master_bind:

will wait for a file/tmp/start_me_up.txt to make the condition set. The content of this file is completely irrelevant; PostgreSQL simply checks to see if the file exists and, if so, stops the recovery and converts itself to master.Creating an empty file is fairly straightforward work:imac:slavehs$ Touch/tmp/start_me_up.txtThe database system will respond to the new file Start_me_up.txtFatal:terminating Walreceiver proced Fire up:Log:trigger file found:/tmp/start_ss due toAdministrator commandLo

Oracle 10g Advanced Replication instances (multi-agent replication)Objective:Configured three times, two is one way. The last time is finally two-way. Also a little bit of success in the joy. Joy? Joy does not. It's such a simple thing that I feel ashamed for so long. A lot of data on the network. But they seem to have a bit of a casual writing. Sometimes a little bit of error can make you only have to redo

Tags: mysql master and slave replicationMySQL master-slave replication and semi-synchronous replication principle1, master-slave replication is mainly based on the binary log (binlog), the binary logging is a complete event. 2. Take the binary log of the primary server and run it again from the server. 3. Copy process: 1，slave端的IO线程连上master端，请求 2，master端返回给sla

Memory Copy-marshal.copy: Copy the current incoming data byte[] pcm_src = new Byte[len]; Copy data to binary array marshal.copy (PCM, PCM_SRC, 0, Len); Array replication-array.copy: Copy the current incoming data byte[] pcm_src = new Byte[len]; Copy data to binary array marshal.copy (PCM, PCM_SRC, 0, Len); Copy the new incoming data to the new array structure array.copy (pcm_src, 0, Pcm_dest, Bts_left. Length, Len) Test Example: Sample

/** * Definition for singly-linked list with a random pointer. * struct Randomlistnode {* int label; * Randomlistnode *next, *random; * Randomlistnode (int x): label (x), Next (null), random (null) {} *}; */class Solution {//In order to be able to quickly locate a node, using deterministic mapping, the node of the replicated list is the next node of the original linked list Public:randomlistnode *copyrandomlist ( Randomlistnode *head) {//each node points to its corresponding node of t

Master and Slave server time to synchronize, the database version is best consistent, so as to avoid the function of processing, log read, log parsing and other anomalies. The following three master-slave replication settings are independent. Notice the impact of firewalls and selinux. 1, simple master-slave replication implementation (1) configuration of the primary server 1) Installation Mariadb-serv

MysqlMaster-Slave Architecture Technical DescriptionMysql's built -in replication capabilities are the foundation for building large, high-performance applications. the distribution of MySQL data to multiple systems is done by copying the data from one of MySQL 's hosts (master) to other hosts (slaves). and re-run it again to achieve it. One server acts as the primary server during replication, while one or