global transaction

MySQL High Availability Scenario MHA Introduction Overview MHA is a Japanese MySQL Daniel written in Perl a set of MySQL failover scheme to ensure the high availability of the database system. In the time of downtime (typically 10-30 seconds),

First, Mysql 5.6 new features....Improvements to replication features⒈ supports multi-threaded replication, (slave-parallel-workers=0 0: Disables multithreading;) it actually turns on the corresponding independent thread for each database. That is,

Function Introduction POSTGRES-XC/XL/X2 is an open source project. It provides a multiple-master synchronous, transparent, PostgreSQL cluster solution. Unlike other cluster tools, it has a strong scalability when writing data, and introduces the

With the large number of high-concurrency access, massive data processing and other scenarios more and more, how to achieve the high availability of web sites, scalability, scalability, security and other goals are becoming more and more

Gtid is a global transaction ID that has been successfully executed based on the original MySQL server, combined with the server ID and transaction ID. This global transaction ID is unique not only on the original server, but also on all MySQL

Go from:http://www.2cto.com/database/201306/221329.html  overview  mha is a Japanese MySQL Daniel written in Perl a set of MySQL failover scheme, To ensure high availability of the database system. In the time of downtime (usually within 10-30

One: Concept understanding:1.tid:transaction ID, which is the transaction ID number of the MySQL server. 2.gtid:global Transaction ID, global transaction ID, no two thing IDs are the same in the entire master-slave replication schema.3. The global

There are three types of Java transactions: JDBC Transaction, JTA (Java Transaction API) transaction, container transaction.A transaction is a uniform commit or rollback operation for a series of database operations (such as inserting multiple data),

The previous article introduced the JDBC transaction, JDBC can handle the transaction of a single data source, satisfies most transaction processing requirements, but the JDBC transaction does not solve the problem of multi-data source and

For more information, see mysqldump data export. 1. An error (1064) is reported when mysqldump is used. This is because the version of mysqldump is too low and is inconsistent with the current database version. Mysqldump: Couldn't execute 'set

This article mainly explains the mysql commands in centoslinux (redhatlinux). If your mysql is installed in source code, I add the "mysql installation directory bin" to the path environment variable, mysql startup script has been copied to etcinit.

1 The session created by Getcurrentsession is bound to the current thread, and Opensession does not.2 the thread created by Getcurrentsession automatically shuts down after a transaction is rolled back or the thing commits, and opensession must be

This text connection: http://blog.csdn.net/bluishglc/article/details/7612811, reprint please indicate the source!1.XAXA is a specification of distributed transactions presented by the X/open organization. The XA specification primarily defines the

Preface Application ScenarioTransactions must meet the characteristics of traditional transactions, namely atomicity, consistency, separation, and persistence. But in the distributed transaction process,Some venues such as in the e-commerce system,

PHP declarative transaction processing 1. database transactions Transaction is the basic unit of concurrency control. A transaction is a sequence of operations. these operations are either executed or not executed. it is an inseparable unit of work.

Q. What does XL stand? XL is short for extensible lattice. It also connotes an extra large version of postgresql, in this case when SS multiple systems. Q. Is this a "nosql" solution? No, ipvs-XL supports traditional SQL, stronugly conforms to

Go to the mysql homepage and cover all the articles about how good mysql 5.6 is. Later, I browsed the 5.6 update description, saying that replication was enhanced, and some people tested to enable replication, which had little impact on performance.

MariaDB's GTID replication and multi-source replication, mariadbgtid Replication What is GTID? GTID is the global transaction ID (global transaction identifier). It was initially implemented by google and officially added to MySQL in MySQL 5.6. GTID

What is JPAThe JPA (Java Persistence API) is Sun's official Java Persistence specification, which provides Java developers with an object/relational mapping tool to manage relational data in Java applications. Its appearance is mainly to simplify

1. The session created by getcurrentsession is bound to the current thread, and the opensession creates a new session each time. 2. The thread created by getcurrentsession will be automatically closed after transaction rollback or transaction commit,