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Displaying posts with tag: Fault-tolerance (reset)

Writing a Fault-tolerant Database Application using MySQL Fabric - MySQL Fabric 1.4.2 Release Candidate
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If we want to run the application presented in "Writing a Fault-tolerant Database Application using MySQL Fabric" with MySQL Fabric 1.4.2 Release Candidate, some changes to the application are required. In the previous post, we used MySQL Fabric 1.4.0 Alpha and many changes have been made since this version. We can find an updated version of the application here:


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Tips to Build a Fault-tolerant Database Application
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Applications should be written taking into account that errors will eventually happen and, in particular, database application developers usually consider this while writing their applications.

Although the concepts required to write such applications are commonly taught in database courses and to some extent are widely spread, building a reliable and fault-tolerant database application is still not an easy task and hides some pitfalls that we intend to highlight in this post with a set of suggestions or tips.

In what follows, we consider that the execution flow in a database application is characterized by …



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Writing a Fault-tolerant Database Application using MySQL Fabric
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In this post, we are going to show how to develop fault-tolerant applications using MySQL Fabric, or simply Fabric, which is an approach to building high availability sharding solutions for MySQL and that has recently become available for download as a labs release (http://labs.mysql.com/). We are going to focus on Fabric's high availability aspects but to find out more on sharding readers may check out the following blog post:


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Failover Techniques for MySQL
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The occurrence of failures and crashes can compromise the high availability of your database system affecting your revenue and reputation. Therefore, it is fundamental to minimize downtime and have an efficient strategy for crash recovery.

Replication and failover are commonly applied to deal with those situations. However, other types of failures can also affect the recovery process. In fact, the occurrence of unanticipated faults can really be an headache! Thus, it is better to be prepared and implement a good fault-tolerant failover strategy.

Performing failover is not trivial. It requires the execution of several steps in …



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