As part of “MySQL Sunday” at this year’s Oracle Open World, Mat Keep and I presented on the MySQL Cluster architecture and the latest features. If you weren’t able to attend then you can watch/listen to the replay here.
MySQL Cluster in iBooks
MySQL documentation has now been made available in ePub format (fetch the MySQL Cluster versions from http://dev.mysql.com/doc/index-cluster.html ). This format is intended for various book readers.
I’ve tried it on 2 iPhone applications; Apple’s iBooks and the iPhone version of Stanza. The documents render well in both applications but as with most reference books you get the best results if you reduce the font size so that you get more on the screen at once.
With both applications, you can add the books through iTunes but Stanza also has the advantage that if you browse to the document in Opera on the iPhone then it gives you the option of opening it in Stanza – cutting out the need to use iTunes. I also …[Read more]
On Wednesday 25 August, Johan Anderson and Mat keep will be presenting a free webinar on the best practices for deploying MySQL Cluster. If you’d like to attend then just register here.
Johan has years of MySQL Cluster professional services experience – and so if you’re interested in deploying a product ready MySQL Cluster database then this is a must-view session. Even if you can’t make it live, register anyway and you’ll be sent a link to the recording and charts afterwards.
An invaluable session for those who are about to, or who already have, deployed MySQL Cluster. Delivered by the lead MySQL Cluster professional services consultant in Oracle, this session will present best practices on deploying MySQL Cluster in order to accelerate time to service with the highest levels of availability …[Read more]
There is often confusion as to how it can be claimed that MySQL Cluster delivers in-memory performance while also providing durability (the “D” in ACID). This post explains how that can be achieved as well as how to mix and match scalability, High Availability and Durability.
MySQL Cluster deployment options
As an aside, the user can specify specific MySQL Cluster tables or columns to be stored on disk rather than in memory – this is a solution for extra capacity but you don’t need to take this performance hit just to have the data persisted to disk. This post focuses on the in-memory approach.
There is a great deal of flexibility in how you deploy MySQL Cluster with in-memory data – allowing the user to decide which features they want to make use of.
The simplest (and least common) topology …[Read more]
The MEMORY storage engine has been widely adopted by MySQL users to provide near-instant responsiveness with use cases such as caching and web session management. As these services evolve to support more users, so the scalability and availability demands can start to exceed the capabilities of the MEMORY storage engine.
The MySQL Cluster database, which itself can be implemented as a MySQL storage engine, is a viable alternative to address these evolving web service demands. MySQL Cluster can be configured and run in the same way as the MEMORY storage engine (ie on a single host with no replication and no persistence). As web services evolve, any of these attributes can then be added in any combination to deliver higher levels of scalability, …[Read more]
Configure MySQL Server nodes for MySQL Cluster
The new version of MySQL Workbench (5.2.25) has just gone GA – see the Workbench BLOG for details.
So what’s the relevance to MySQL Cluster? If you have a Cluster that uses MySQL Servers to provide SQL access then you can now use MySQL Workbench to manage those nodes:
- Start & stop the mysqld processes
- Configure the per-mysqld configuration data held in my.cnf or my.ini
The reason that I describe the support as ‘partial’ is that these MySQL Servers are treated as independent entities (no concept of them being part of a Cluster) and there is currently no way to use it to configure or manage the other Cluster processes (data and management nodes). Having said that, what …[Read more]
By default, MySQL Cluster sends log data to a file but you can also send it to the console or to Syslog; this article explains how to send it to Syslog. The example given here is for LINUX.
In this example, I’ll use the “user” syslog facility name and so the first step is to make sure that syslog is configured to route those messages. If this hasn’t already been configured then add the following lines to /etc/rsyslog.conf:
# Log user messages to local files user.* /var/log/user
For the changes to take effect, restart the syslog service:
[root@ws1 etc]# service rsyslog restart Shutting down system logger: [ OK ] Starting system logger: [ OK ]
Note that you should make those changes as root.
Still as root, start up a stream of any additions to the new log file:
[root@ws1 etc]# tail -f /var/log/user…[Read more]
As part of “MySQL Sunday” at this year’s Oracle Open World, Mat Keep and I will be presenting on the latest MySQL Cluster features. We’ll be presenting at 15:30 (Pacific Time) on 19th September (the event starts with a key note at 12:30).
If you’re attending Oracle Open World then please indicate that you’d like to attend the MySQL Sunday when you register. If you aren’t planning to go to Oracle Open World but will be in the San Francisco area then buying a Discover pass (only $50 if you register by 16 July) will get you into the MySQL Sunday sessions. Register here.
Join us for an Oracle MySQL Breakfast Seminar to better
understand Oracle’s MySQL strategy and what’s new with
09:00 a.m. Welcome Coffee/Tea
09:30 a.m. Oracle’s MySQL Strategy
10:00 a.m. What’s New – The MySQL Server & MySQL Cluster
10.45 a.m. Coffee/Tea Break
11:00 a.m. What’s New – MySQL Enterprise & MySQL Workbench
11:45 a.m. Q&A
12:00 noon End of the Breakfast Seminar
None, it’s a free event! But places are limited and the seminar is held on a first come first served basis, so …
A new white paper is available from http://www.mysql.com/why-mysql/white-papers/mysql_wp_cluster_ScalingWebServices.php
MySQL and memcached has become, and will remain, the foundation for many dynamic web services with proven deployments in some of the largest and most prolific names on the web.
There are classes of web services however that are highly transactional and update-intensive, demanding real-time responsiveness and continuous availability. In these cases, MySQL Cluster provides the familiarity and ease-of-use of the regular MySQL Server, while delivering significantly higher levels of write performance with less complexity, lower latency and 99.999% availability.
This whitepaper will discuss the use-cases for both approaches, and provides an insight into how MySQL Cluster is enabling users to scale …[Read more]