Cluster Hosting
By using multiple servers with our cluster technology we keep your application fast and scalable online.
A cluster is usually used when a single server does not offer sufficient capacity or speed, when extremely high availability is required — or a combination of these.
High-Availablility (HA) Cluster
By setting up each component of a web server or application server at least twice, a higher degree of availability is created than with a single server. Often web, caching and database components are installed on one server.
We replace the database and other components with separate servers that take over the same functions.
A database cluster has at least three servers. An HA cluster also gives a performance boost by separating the components, but the emphasis is on the availability of the application.
We like to use Galera for the HA setup of a database cluster.
HAProxy is used by a number of high-profile websites including GoDaddy, GitHub, Bitbucket, Stack Overflow, Reddit, Speedtest.net, Tumblr, Twitter and Tuenti and is used in the OpsWorks product from Amazon Web Services.
High Performance (HP) Cluster
In a high performance cluster the emphasis is on speed and less on availability. Like the HA cluster, this variant is based on the presence of at least three database servers. For an HP cluster, we use a MySQL multi-mastersetup.
A high performance cluster is usually also high available, but its emphasis is not on availability. Such clusters are often created with a single load balancer.
Scalability
One of the biggest advantages of a cluster is that it gives the possibility to scale up. Because we have separated all components, we can add servers to the cluster in case of bottlenecks to distribute the load better.
Web- or database servers can be added without much effort to keep performance up to standard. Autoscaling even makes it possible to automatically increase or decrease the number of servers as required.
If you expect large peaks in traffic due to a television broadcast or marketing campaign, for example, we will ensure that your site or shop continues to function optimally!
Varnish is used by websites including Wikipedia, online newspaper sites such as The New York Times, The Guardian, Gulf News, The Hindu, Corriere della Sera, social media and content sites such as Facebook, Twitter, Reddit, Spotify, Vimeo, Tumblr and Pinterest. In 2012, 5% of the top 10,000 sites in the web used the software.
nginx is free and open-source software, released under the terms of the 2-clause BSD license. A large fraction of web servers use NGINX, often as a load balancer.
In March 2019, the nginx company was acquired by F5 Networks for $670 million.
As of February 2020, Netcraft estimated nginx served 36.48 percent of all active websites ranked, ranking it first, above Apache at 24.51 percent, while according to W3Techs, Apache is ranked first at 40.1 percent and nginx 2nd at 31.8 percent.
Varnish is used by websites including Wikipedia, online newspaper sites such as The New York Times, The Guardian, Gulf News, The Hindu, Corriere della Sera, social media and content sites such as Facebook, Twitter, Reddit, Spotify, Vimeo, Tumblr and Pinterest. In 2012, 5% of the top 10,000 sites in the web used the software.
HAProxy is used by a number of high-profile websites including GoDaddy, GitHub, Bitbucket, Stack Overflow, Reddit, Speedtest.net, Tumblr, Twitter and Tuenti and is used in the OpsWorks product from Amazon Web Services.
It implements several APIs for controlling resources, but its preferred API for this purpose is the Open Cluster Framework resource agent API.
Pacemaker achieves maximum availability for cluster services (a.k.a. resources) by detecting and recovering from node- and resource-level failures by making use of the messaging and membership capabilities provided by Corosync.
It can do this for clusters of practically any size and comes with a powerful dependency model that allows the administrator to accurately express the relationships (both ordering and location) between the cluster resources.
Virtually anything that can be scripted can be managed as part of a Pacemaker cluster.
A hosting partner that grows with you?
We build and trust on cooperation. Jeroen is happy to listen to your challenges and will work with you to see if Cobytes is a good partner.
