Hybrid Web Cluster: Difference between revisions
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'''Hybrid Web Cluster''' is a software product developed by Hybrid Logic Ltd., a [[London]], [[ | '''Hybrid Web Cluster''' is a software product developed by Hybrid Logic Ltd., a [[London]], [[United Kingdom]] based company. The software is designed to provide commodity web hosting in a distributed and fault-tolerant manner <ref>[http://www.youtube.com/watch?v=kauUyb63Sak Hybrid Web Cluster video demo]</ref> on a [[Computer_cluster|cluster]] of either real physical servers or virtual [[Cloud_computing#Infrastructure|cloud computing infrastructure]] server instances. | ||
==Features== | ==Features== | ||
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* Works on real hardware and [[Virtualization|virtualized]] [[Cloud_computing#Infrastructure|cloud computing infrastructure]]. | * Works on real hardware and [[Virtualization|virtualized]] [[Cloud_computing#Infrastructure|cloud computing infrastructure]]. | ||
* Has a configurable level of replication redundancy. | * Has a configurable level of replication redundancy. | ||
* Enables instant and automatic [[ | * Enables instant and automatic [[scalability]]. | ||
==Technology== | ==Technology== | ||
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==Scalability== | ==Scalability== | ||
The upper bound on the [[ | The upper bound on the [[scalability]] of this system is that no single website can ever utilise more than two servers at once - under this condition all standard LAMP applications will run unmodified. However, it is possible to scale beyond this limit via the use of [[Multi-master_replication|multi-master database replication]] - this requires that applications store all [[State_variable|variable state information]] within a database - the database can then be live on many servers, the web application itself must remain static and can be served from as many nodes in the cluster as required. | ||
==Redundancy== | ==Redundancy== | ||