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16.8. Using High-Speed Interconnects with MySQL Cluster

Even before design of NDB Cluster began in 1996, it was evident that one of the major problems to be encountered in building parallel databases would be communication between the nodes in the network. For this reason, NDB Cluster was designed from the very beginning to allow for the use of a number of different data transport mechanisms. In this Manual, we use the term transporter for these.

Currently, the MySQL Cluster codebase includes support for four different transporters. Most users today employ TCP/IP over Ethernet because it is ubiquitous. TCP/IP is also by far the best-tested transporter in MySQL Cluster.

We are working to make sure that communication with the ndbd process is made in “chunks” that are as large as possible because this benefits all types of data transmission.

For users who desire it, it is also possible to use cluster interconnects to enhance performance even further. There are two ways to achieve this: Either a custom transporter can be designed to handle this case, or you can use socket implementations that bypass the TCP/IP stack to one extent or another. We have experimented with both of these techniques using the SCI (Scalable Coherent Interface) technology developed by Dolphin.


 
 
  Published under the terms of the GNU General Public License Design by Interspire