mysql high availability

... "/var/run/mysqld/mysqld1.sock"); $NODE[] = array("localhost", 3308, "/var/run/mysqld/mysqld2.sock"); $NODE[] = array("localhost", 3309, "/var/run/mysqld/mysqld3.sock"); 176 ... sec) Conclusion High availability is a nontrivial concept to implement in practice. In this chapter, we presented a look into high availability and how you ca...

Ngày tải lên: 17/10/2013, 22:15

... shard_to_node WHERE shard = %d"; mysql_ select_db("common", $common); $result = mysql_ query(sprintf($query, $shardNo), $common); $row = mysql_ fetch_row($result); $db_server = ... ? ":{$row[2]}" : "{$row[0]}:{$row[1]}"; $conn = mysql_ connect($db_server, 'query_user'); mysql_ select_db("shard_$shardNo", $conn); return array($...

Ngày tải lên: 20/10/2013, 17:15

... is relatively high (it is time-consuming compared to accessing main memory directly), modern operating systems can do it so quickly that the penalty isn’t normally an issue unless it reaches such a high ... swapping at a high level periodically to reclaim memory. Be sure to measure memory usage over a period of time to ensure you are not observing a normal cleanup operation. When period...

Ngày tải lên: 20/10/2013, 17:15

... sub- layer in MySQL an area not well understood or covered by other reference sources. How MySQL Communicates Performance There are two mechanisms you can use to govern and monitor behavior in the MySQL server. ... performance in MySQL, there is no (free) advanced profiling tool available. While the basic MySQL installation does not include formal tools for monitoring da- tabase impro...

Ngày tải lên: 24/10/2013, 15:15

... key cache and the MyISAM stor- age engine, see the online MySQL Reference Manual. MySQL, Replication, and High Availability There is a higher probability of corruption of MyISAM data than InnoDB ... EXPLAIN, there is no single tool in a standard MySQL distribution that you can use to profile a query in MySQL. The “Optimization” chapter in the online MySQL Reference Manual has a ho...

Ngày tải lên: 24/10/2013, 15:15

... critical data in your basement or in a public place may not be safe enough. High availability As mentioned earlier, high availability options form the first layer of defense in a disaster recovery ... online MySQL Reference Man ual. The following shows a configuration file with typical settings for the first file, cov- ering the data you want to back up: [mysqld] datadir = /usr/loca...

Ngày tải lên: 28/10/2013, 22:15

... chapter introduces the MySQL Enterprise suite of tools and shows you how they will save you time while keeping your MySQL servers running at the highest levels of performance and availability. We also ... stdout=PIPE) mysql_ command = [" ;mysql& quot;, " host=%s" % (server.host), " user=%s" % (server.sql_user.name), " password=%s" % (server.sql_user...

Ngày tải lên: 28/10/2013, 22:15

... similar perform- ance problems. Use MySQL replication You have seen in previous chapters how important MySQL replication is for scale- out, load balancing, and high availability. The cloud makes these ... makes these features easier to use because you can create as many MySQL instances as you need to implement almost any MySQL high availability solution. Use standard AMIs The c...

Ngày tải lên: 07/11/2013, 19:15

... will be well on your way to making MySQL Cluster the best high- performance, high- availability solution for your organization. For more information about optimizing MySQL Cluster, see the white paper ... paper “Optimizing Performance of the MySQL Cluster Database” at http://www .mysql. com/why -mysql/ white-papers /mysql_ wp_cluster_perfomance.php. 560 | Chapter 15: MySQL Cluster...

Ngày tải lên: 07/11/2013, 20:15

... 457, 463 Query Analyzer, 458 MySQL Enterprise Server, 456 MySQL Forge, 155 MySQL Migration Toolkit, 302 MySQL monitor, 294 MySQL Monitor and Advisor (MONyog) tool, 317 MySQL Proxy data sharding ... promotion, 135–141 MySQL Query Browser, 312–313 MySQL servers benchmark suite, 318–319 communicating performance, 293 GUI tools, 302 MySQL Administrator, 302–312 MySQL Query Bro...

Ngày tải lên: 07/11/2013, 20:15