Blog

In this blog, we discuss Galera Cluster and synchronous versus asynchronous replication. We also discuss some of the differences between Galera Cluster and Tungsten Cluster rooted in this difference in foundation. And how Tungsten has served a critical niche - mission-critical, geo-distributed, highly-performant MySQL applications - for a long time.

In this blog we take a look at how you can use Tungsten Replicator to replicate data from multiple sources, and merge into a single target using 3 simple yet effective filters.

Migrating to the cloud with zero downtime is a problem that companies running mission-critical applications have to solve, but not on their own. If you’re running a MySQL or MariaDB database it can be easy. Many of our customers have done this successfully, simplifying their overall Cloud migration process by making the database layer easy to move. It’s one less thing to worry about.

In this blog, we cover tprovision. tprovision is a complete rewrite of the provisioning tool “tungsten_provision_slave,” included with Tungsten Cluster. It is streamlined and allows easy provisioning of replica databases.

Tungsten Clustering is a powerful tool with many moving parts, including the Tungsten Connectors which may be installed on any application server. During a troubleshooting event, it is helpful to understand what to look for and where, in addition to understanding how the logs work together to provide a clear picture of the situation. In Tungsten version 7, we introduced a number of features designed to make troubleshooting easier, and this blog will cover some of that too.

This blog post will walk you through configuring HA Proxy for the Tungsten Dashboard, along with the new command `tpm generate-haproxy-for-api` which helps automate the process by translating existing INI files into haproxy.cfg config file format. The Tungsten Dashboard is a browser-based GUI, designed to make using a Tungsten Cluster as easy as possible.

Transaction History Log (THL) files are the core of Tungsten Replication, containing the actual MySQL write events that are replicated to the replicas. These files can take up considerable amounts of disk space, making them of interest for housekeeping operations to limit the consumption and ultimately, the cost. This blog post will walk you through THL management, along with the new command `tpm purge-thl` which helps automate the process when THL needs to be removed prior to the automatic rotation window.

Thinking transparent reconnects of applications is the grail of HA? It is! But Active/Active setups make them risky.

We are pleased to announce that Tungsten Clustering and Tungsten Replicator GA versions 7.0.1 are now available. This new minor release includes 52 new features and improvements, including two critical bug fixes. Read this blog to learn about the new v7.0.1 release!

Performance tuning any system provides more speed for the same hardware spend, gives the end-user a better, faster experience and typically reduces the stress on staff all around. Security tuning locks down critical data to prevent unauthorized access. Today we will explore both the security and performance enhancements available for the Tungsten Replicator THL sub-system as of version 7.x.

Sometimes you really, really want to know what a MySQL client is asking of the MySQL server. As of Tungsten Clustering v7.0.0, you may now enable Connector Audit Logging, which captures data transferred between client applications and MySQL servers to a file, database or socket. This blog post will walk you through the feature and how to enable, configure and disable Tungsten Connector Audit Logging.

Deploying Composite Active/Active clusters gives end-users the best experience no matter where they are located. Tungsten Cluster makes this possible with the deployment of MySQL clusters at geo-scale, allowing the enterprise to host clusters close to the users. How can we avoid write-conflicts with asynchronous replication and multiple primary databases?