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Displaying posts with tag: ha (reset)

Q&A: High availability when using MySQL in the cloud
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Last week I hosted a webinar on using MySQL in the cloud for High Availability (HA) alongside 451 Research analyst Jason Stamper. You can watch the recording and also download the slides (free) here. Just click the “Register” button at the end of that page.

We had several excellent questions and we didn’t have time to get to several of them in the allotted time. I’m …

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MaxScale: A new tool to solve your MySQL scalability problems
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Ever since MySQL replication has existed, people have dreamed of a good solution to automatically split read from write operations, sending the writes to the MySQL master and load balancing the reads over a set of MySQL slaves. While if at first it seems easy to solve, the reality is far more complex.

First, the tool needs to make sure it parses and analyses correctly all the forms of SQL MySQL supports in order to sort writes from reads, something that is not as easy as it seems. Second, it needs to take into account if a session is in a transaction or not.

While in a transaction, the default transaction …

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MySQL High Available with MHA
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Providing a suitable High Availability (HA) solution for each database system is one of the challenging tasks for a DBA and here we have to answer some questions like the following ones:

  1. What is the cost for that HA solution?
  2. Is it required to change the system structure or the DB design to use that HA solution?
  3. Is it complicate to understand, use or maintain ?

Choosing the suitable HA solution for each system will depend on the answers of such questions …
In this post, I’m going to write about MySQL Master High Availability …

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Self-Critic and Slides of my PLMCE Talks
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The link to the slides of my talks can be found at the end of this post but first, let me share some thoughts about PLMCE.

Talking with people, I was surprised to be criticized of presenting only the good sides of my solution without giving credit to the good side of the alternative solutions.  More than surprised, I was also a little shocked as I want to be perceived as objective as possible.  Let me try to fix that:

  • I am not a GTID and log-slaves detractor, I am a simplicity lover.
  • I actually like GTIDs and I …



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MySQL Cluster 7.4 New Features Webinar Replay
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I recently hosted a webinar introducing MySQL Cluster and then looking into what’s new in the latest version (MySQL Cluster 7.4) in some more detail. The replay of the MySQL Cluster 7.4 webinar is now available here. Alternatively if just want to skim through the charts then scroll down.

Abstract

MySQL Cluster powers the subscriber databases of major communication services providers as well as next …

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MaxScale Binlog Server HOWTO: POC for Master Promotion without Touching any Slave
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Note: DO NOT use this procedure in production, this is a proof of concept (POC).  MaxScale 1.1.0 does not yet fully support that procedure and things could go wrong in some situations (see at the end of the post for the details).

In my talk at PLMCE 2015, I presented an architecture to promote a slave as a new master without touching any other slave and I claimed that I tested it.  This HOWTO

Even Easier Master Promotion (and High Availability) for MySQL (no need to touch any slave)
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Dealing with the failure of a MySQL master is not simple.  The most common solution is to promote a slave as the new master but in an environment where you have many slaves, the asynchronous implementation of replication gets in your way.  The problem is that each slave might be in a different state:

some could be very close to the dead master, some could be missing the latest transactions, and

Choosing the right MySQL High Availability Solution – webinar replay
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Earlier this week, I presented a webinar on MySQL High Availability options for MySQL – what they are and how to choose the most appropriate one for your application.

The replay of this webinar can now be viewed here or if you just want to look at the charts then scroll down. At the end of this post, I include a summary of …

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FOSDEM 2015 – SQL & NoSQL Presentation
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Last weekend I got to present to the MySQL Developers Room at FOSDEM in Brussels.

The subject of my presentation was NoSQL and SQL the best of both worlds

There’s a lot of excitement around NoSQL Data Stores with the promise of simple access patterns, flexible schemas, scalability and High Availability. The downside comes in the form of losing ACID transactions, consistency, flexible queries and data integrity checks. What if you could have the best of both worlds? This session shows how MySQL Cluster provides …



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Severalnines News & Tools: New DevOps Guide Webinar, Load Balancing for MySQL Replay and More..
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February 4, 2015 By Severalnines Check Out Our Latest Technical Resources for MySQL, MariaDB & MongoDB Clusters

 

Like every month, we have created new content and tools for you; here is a summary of what we’ve published. Please do check it out and let us know if you have any comments or feedback.

 

New Live Technical Webinars

 

A …

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