In this blog post, we talk about the basic function and features of the Tungsten Connector.

The Tungsten Connector is an intelligent MySQL proxy that provides key high-availability and read-scaling features. This includes the ability to route MySQL queries by inspecting them in-flight.

The most important function of the Connector is failover handling. When the cluster detects a failed master because the MySQL server port is no longer reachable, the Connectors are signaled and traffic is re-routed to the newly-elected Master node.

Next is the ability to route MySQL queries based on various factors. In the default Bridge mode, traffic is routed at the TCP layer, and read-only queries must be directed to a different port (normally 3306 for writes and 3307 for reads).

There are additional modes, Proxy/Direct and …

In a previous post, we discussed how you can take control of the failover process in ClusterControl by utilizing whitelists and blacklists. In this post, we are going to discuss a similar concept. But this time we will focus on integrations with external scripts and applications through numerous hooks made available by ClusterControl.

Infrastructure environments can be built in different ways, as oftentimes there are many options to choose from for a given piece of the puzzle. How do we define which database node to write to? Do you use virtual IP? Do you use some sort of service discovery? Maybe you go with DNS entries and change the A records when needed? What about the proxy layer? Do you rely on ‘read_only’ value for your proxies to decide on the writer, or maybe you make the required changes directly in the configuration of …

We are glad to announce the release of dotConnect for MySQL 8.12 — a powerful ADO.NET provider for MySQL with advanced support for Entity Framework, Entity Framework Core, and LinqConnect ORMs. The new version of dotConnect for MySQL features MySQL 8.0 support. We have supported the new default MySQL authentication plugin – caching_sha2_password. The list […]

Introduction

What is the X-DevApi? From insidemysql.com there is a definition of the X-DevAPI and its features in the following paragraphs:

The X DevAPI is the common client-side API used by all connectors to abstract the details of the X Protocol. It specifies the common set of CRUD-style functions/methods used by all the official connectors to work with both document store collections and relational tables, a common expression language to establish query properties such as criteria, projections, aliases, and a standard set of additional database management features for handling things like transactions, indexes, etc.

The fact that most of these features share the same format and API between connectors, makes the X DevAPI a perfect fit for modern polyglot development environments such as microservices, and the fact that they are based on a …

Please join Percona’s Chief Evangelist, Colin Charles as he presents as he presents MariaDB 10.3 vs. MySQL 8.0 on Wednesday, July 18th, 2018, at 9:00 AM PDT (UTC-7) / 12:00 PM EDT (UTC-4).

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Technical considerations

Are they syntactically similar? Where do these two databases differ? Why would I use one over the other?

MariaDB 10.3 is on the path of gradually diverging from MySQL 8.0. One obvious example is the internal data dictionary currently under development for MySQL 8.0. This is a major change to the way metadata is stored and used within the server, and MariaDB doesn’t have an equivalent feature. Implementing this feature could mark the end of datafile-level compatibility between …

If you’re reading consumer SSD reviews and using them to estimate SSD performance under database workloads, you’d better stop. Databases are not your typical consumer applications and they do not use IO in the same way.

Let’s look, for example, at this excellent AnandTech review of Samsung 960 Pro –  a consumer NVMe device that I happen to have in my test lab.

The summary table is actually great, showing the performance both at Queue Depth 1 (single threaded) as well as Queue Depth 32 – a pretty heavy concurrent load.

Even at QD1 we see 50K (4K) writes per second, which should be enough for pretty serious database workloads.

In reality, though, you might be in for some disappointing surprises. While “normal” buffered IO is indeed quite fast, this drive really hates fsync() calls, with a single thread …

In this blog post, we talk about how query connections are handled by the Tungsten Connector, especially read-only connections.

There are multiple ways to configure session handling in the Connector. The three main modes are Bridge, Proxy/Direct and Proxy/SmartScale.

In Bridge mode, the data source to connect to is chosen ONCE for the lifetime of the connection, which means that the selection of a different node will only happen if a NEW connection is opened through the Connector.

So if your application reuses its connections, all traffic sent through that session will continue to land on the selected read slave, i.e., when using connection pooling.

http://docs.continuent.com/tungsten-clustering-6.0/connector-bridgemode.html

The key difference is in how the slave latency checking is handled: …

Recently one of our prospective customers asked this question, “We use Amazon RDS for MySQL, Do we still need a MySQL Database Architect / DBA / Engineer? ”  The quick answer is – Yes,  you still need a MySQL DBA to solve problems which Amazon RDS or Amazon Aurora for MySQL cannot solve, We spend almost 6 hours in meeting, helping the customer to understand how cloud Database Infrastructure and Database as a Service (DBaaS) simplifies Database Infrastructure provisioning and rolling-out scalability and high availability solutions faster across multiple locations, This post is about how we think the corporations can benefit from Amazon RDS / Aurora and build highly responsive web-scale database infrastructure, we have also included the solutions which simplifies maximum ROI for the customers from their cloud database infrastructure, We as an full-service database infrastructure solutions provider strongly believe, Amazon …

We are excited to announce the 1.6.2 release of ClusterControl - the all-inclusive database management system that lets you easily automate and manage highly available open source databases in any environment: on-premise or in the cloud.

ClusterControl 1.6.2 introduces new exciting Backup Management as well as Security & Compliance features for MySQL & PostgreSQL, support for MongoDB v 3.6 … and more!

Release Highlights

Related resources

 ClusterControl ChangeLog

 Download ClusterControl

 Learn More About …

This tutorial shows the steps to install an Ubuntu 18.04 (Bionic Beaver) server with Nginx, PHP, MariaDB, Postfix, pure-ftpd, BIND, Dovecot and ISPConfig 3.1. ISPConfig is a web hosting control panel that allows you to configure the installed services through a web browser. This setup provides a full hosting server with web, email (inc. spam and antivirus filter), Database, FTP and DNS services.