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Displaying posts with tag: scaling (reset)
Webinar June 7, 2017: MySQL In the Cloud – Migration, Best Practices, High Availability, Scaling

Join Percona’s CEO and Founder Peter Zaitsev as he presents MySQL In the Cloud: Migration, Best Practices, High Availability, Scaling on Wednesday, June 7, 2017, at 10 am PDT / 1:00 pm EDT (UTC-7).

Register Now

Businesses are moving many of the systems and processes they once owned to offsite “service” models: Platform as a Service (PaaS), Software as a Service (SaaS), Infrastructure as a Service (IaaS), etc. These services are usually referred to as being “in the cloud” – meaning that the infrastructure and management of the service in …

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Better Than Linear Scaling

In this blog, we’ll look at how to achieve better-than-linear scaling.

Scalability is the capability of a system, network or process to handle a growing amount of work, or its potential to be enlarged to accommodate that growth. For example, we consider a system scalable if it is capable of increasing its total output under an increased load when resources (typically hardware) are added: https://en.wikipedia.org/wiki/Scalability.

It is often accepted as a fact that systems (in particular databases) can’t scale better than linearly. By this I mean when you double resources, the expected performance doubles, at best (and often is less than doubled).  

We can attribute this assumption to Amdahl’s law (https://en.wikipedia.org/wiki/Amdahl%27s_law), and later …

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Contributing to popular frameworks for scalability

Right now we’re volunteering some engineering time to assisting the WordPress and WooCommerce people with scalability issues. In the past we’ve put similar efforts into Drupal.

There are many opinions on these systems out there, most of them sadly negative. We take a different view. Each of these frameworks obviously has their advantages and disadvantages, but the key question is why people use them. When we understand that, we can assess that reasoning, and assist further.

Obviously writing your own code all the way is going to potentially create the most optimal result for your site. A custom tool is going to be less code and more optimal for your situation. However, it also requires you to put in quite a bit of development effort both to create and to maintain that system, including security issues. When you’re big enough (as a site/company) this can be worthwhile, but more and more organisations …

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On Open Source and Business Choices

Open Source is a whole-of-process approach to development that can produce high-quality products better tailored to users’ real world needs.  A key reason for this is the early feedback cycle built into that complete process.

Simply publishing something under an Open Source license (while not applying Open Source development processes) does not yield the same quality and other benefits.  So, not all Open Source is the same.

Publishing source of a product “later” (for instance when the monetary benefit has diminished for the company) is meaningless.  In this scenario, there is no “Open Source benefit” to users whatsoever, it’s simply a proprietary product. There is no opportunity for the client to make custom modifications or improvements, or ask a third party to work on such matters – neither is there any third party opportunity to verify and validate either code …

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WebScaleSQL RPMs available at PSCE repository

Driven by popularity of previous post about Debian/Ubuntu builds of WebScaleSQL and long discussions during FOSDEM conference this weekend, PSCE engineering team decided to put even more effort into.

We would like to introduce:

  • RPM packages available for download
  • RedHat/CentOS repository

Architectures covered:

  • x86 (32-bit)
  • x86_64 (64-bit)

Please note that “WebScaleSQL does not currently maintain compatibility for anything except GNU/Linux x86_64.” (WebScaleSQL FAQ)”

RedHat/CentOS releases:

  • CentOS 6
  • CentOS 7

Packages can be downloaded from …

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How to setup High Availability PrestaShop on multiple servers with MariaDB Galera Cluster

November 7, 2014 By Severalnines

PrestaShop is a popular open source e-commerce software powering over 200,000 online stores, according to the company. We’ve seen a bit of interest into high availability PrestaShop setups, so this post will show you how to achieve that on multiple servers. Note that this setup not only caters for failures, but by load balancing traffic across multiple servers, it also allows the system to scale and handle more users.

This post is similar to our previous posts on web application scalability and high availability:

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Data Warehouse in the Cloud - How to Upload MySQL data into Amazon Redshift for reporting and analytics

October 27, 2014 By Severalnines

The term data warehousing often brings to mind things like large complex projects, big businesses, proprietary hardware and expensive software licenses. With Hadoop came open source data analysis software that ran on commodity hardware, this helped address at least some of the cost aspects. We had previously blogged about MongoDB and MySQL to Hadoop. But setting up and maintaining a Hadoop infrastructure might still be out of reach for small businesses or small projects with limited budgets. Well, perhaps then you might want to have a look at Redshift.

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How to change AWS instance sizes for your Galera Cluster and optimize performance

September 3, 2014 By Severalnines

Running your database cluster on AWS is a great way to adapt to changing workloads by adding/removing instances, or by scaling up/down each instance. At Severalnines, we talk much more about scale-out than scale up, but there are cases where you might want to scale up an instance instead of scaling out. 

In this post, we’ll show you how to change instance sizes with respect to RAM, CPU and IOPS, and how to tune your Galera nodes accordingly. Moreover, this post assumes that instances are launched using Amazon VPC.

 

When do we need to upgrade an instance?

 

You typically need to upgrade an instance when you run out of server resources. This includes CPU, RAM, storage capacity, disk throughput and bandwidth. You must allow enough headroom for …

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How to Scale Joomla on Multiple Servers

July 2, 2013 By Severalnines

Joomla! is estimated to be the second most used CMS on the internet after WordPress, with users like eBay, IKEA, Sony, McDonald’s and Pizza Hut. In this post, we will describe how to scale Joomla on multiple servers. This architecture not only allows the CMS to handle more users, by load-balancing traffic across multiple servers. It also brings high availability by providing fail-over between servers.

 

This post is similar to our previous posts on web application scalability and high availability:

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Scaling Wordpress and MySQL on Multiple Servers for Performance

June 11, 2013 By Severalnines

Over the years, WordPress has evolved from a simple blogging platform to a CMS. Over seven million sites use it today, including the likes of CNN, Forbes, The New York Times and eBay. So, how do you scale Wordpress on multiple servers for high performance? 

 

This post is similar to our previous post on Drupal, Scaling Drupal on Multiple Servers with Galera Cluster for MySQL but we will focus on Wordpress, Percona XtraDB Cluster and GlusterFS using Debian Squeeze 64bit.

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