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Revised 2.7.1

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Jonatan Pålsson 2011-05-12 12:41:55 +02:00
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@ -2536,12 +2536,11 @@ Load balancing
\begin_layout Standard \begin_layout Standard
The need for load balancing varies among different kind of systems. The need for load balancing varies among different kind of systems.
Small systems that only use one or a couple of servers can cope with a Small systems that only use one or a couple of servers can cope with a
simple implementation of it, while in large systems it is critical to have simple implementation of load balancing, while in large systems it is useful
extensive and well working load balancing. to have extensive and well working load balancing.
The need also depends on what kind of server structure that the system The need also depends on what kind of server structure the system works
works on. on, a static structure where the number of servers are predefined or a
A static structure where the number of servers are predefined or a dynamic dynamic structure where the number varies.
structure where the number varies.
\begin_inset ERT \begin_inset ERT
status open status open
@ -2560,7 +2559,7 @@ textbf{Amazon EC2}}{A cloud computation service}
\end_layout \end_layout
\begin_layout Standard \begin_layout Standard
Load balancing and scaling is difficult in different scenarios. Load balancing and scaling are difficult in different scenarios.
When running in a separate server park, there are a set number of servers When running in a separate server park, there are a set number of servers
available, this means that an even distribution on all servers is preferable. available, this means that an even distribution on all servers is preferable.
When running the GGS in a cloud, such as Amazon EC2, it is possible to When running the GGS in a cloud, such as Amazon EC2, it is possible to
@ -2592,7 +2591,7 @@ How do we distribute load on these new servers?
\begin_layout Standard \begin_layout Standard
Load balancing is a key component to achieve scalability in network systems. Load balancing is a key component to achieve scalability in network systems.
The GGS is a good example of a system that needs to be scalable, to attain The GGS is a good example of a system that needs to be scalable, to attain
this load balancing is necessary. this, load balancing is necessary.
Optimization of the load balancing for a system is an important task to Optimization of the load balancing for a system is an important task to
provide a stable and fast load balancer. provide a stable and fast load balancer.
There are certain persistence problems that can occur with load balancing, There are certain persistence problems that can occur with load balancing,