Load Balancing for Different Tier

Sir, My boss is asking to deployment Presentation Tier On one server, Business layer on second server, Data Access Layer on third server for the same application and we want to use load balancing for that application. Is is possible and will I get advantage of this concept. If it is possible, Kindly help me the method and also suggest me load balancing for the application in different servers.

Regards,

Shankar Chaurasia

HiShankar Chaurasia,

Basically, your Boss's concern is to improve the performance of the application. There are multiple options.

Option1: Scale-out individual application components to multiple servers
Option2: Scale-out the entire application to multiple servers

If you want to go with Option1, then your application architecture should support this. So, all your Business Logic and Data access logic should be in some Web API / Web Services so that you can deploy those webservices in different server and the same can be consumed in your Presentation Layer. If your current architecture doesn;t support this, you might have to make log of changes to all of your components.

Alternatively, the option2 will let you create a Virtual Network with Network Load Balancer where it uses some algorithm to server the requests by the Servers which are free. We would have to use multiple WebServers that serve the requests. NLB will decide to which server the traffic has to be diverted.

For this, the only code change (rather configruation change) is to set your Session use "SQL Server" instead of "In Proc". Basically, all your user sessions are stored in SQL Server. And, you would need to deploy all your codes in all the Web Servers.

Also, Configuring the Option2 is not a Developer's Cup of cake. You should contact your IT Guys to configure the NLB

Hope you got a high level understanding of the options available.

Thanks,

Prawin

1 Reply

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Praveen Sreeram10y ago
Accepted answer
HiShankar Chaurasia,
Basically, your Boss's concern is to improve the performance of the application. There are multiple options.
Option1: Scale-out individual application components to multiple servers
Option2: Scale-out the entire application to multiple servers
If you want to go with Option1, then your application architecture should support this. So, all your Business Logic and Data access logic should be in some Web API / Web Services so that you can deploy those webservices in different server and the same can be consumed in your Presentation Layer. If your current architecture doesn;t support this, you might have to make log of changes to all of your components.
Alternatively, the option2 will let you create a Virtual Network with Network Load Balancer where it uses some algorithm to server the requests by the Servers which are free. We would have to use multiple WebServers that serve the requests. NLB will decide to which server the traffic has to be diverted.
For this, the only code change (rather configruation change) is to set your Session use "SQL Server" instead of "In Proc". Basically, all your user sessions are stored in SQL Server. And, you would need to deploy all your codes in all the Web Servers.
Also, Configuring the Option2 is not a Developer's Cup of cake. You should contact your IT Guys to configure the NLB

Hope you got a high level understanding of the options available.
Thanks,
Prawin