What does a load balancer do?
A load balancer is a device that acts as a reverse proxy and distributes network or application traffic across a number of servers. Load balancers are used to increase capacity (concurrent users) and reliability of applications.
What happens if a load balancer goes down?
If one load balancer fails, the secondary picks up the failure and becomes active. They have a heartbeat link between them that monitors status. If all load balancers fail (or are accidentally misconfigured), servers down-stream are knocked offline until the problem is resolved, or you manually route around them.
How is load balancer used in SharePoint 2013?
SharePoint Foundation Web Application Service of SharePoint 2013 handles and responds to all incoming requests through IIS. Load Balancer is used to distribute incoming traffic across all the web front end servers. It is not necessary that all the web front end servers should be serving the incoming requests.
Which is request management feature in SharePoint 2013?
Request Management in SharePoint 2013. Request Management feature in SharePoint 2013 manages incoming requests by evaluating logic rules against the user requests in order to determine what/which action to take, and which machine or machines (Targets) in the farm should handle the requests.
How does health weighted routing work in SharePoint?
In health-weighted routing, front-end web servers that have health scores closer to zero will be favored, and fewer requests will be sent to front-end web servers that have a higher health score values. The health weights run from 0 to 10, where 0 is the healthiest and therefore will get the most requests.
Where do SharePoint HLBs send their requests to?
The HLBs send all requests to the Request Manager front-end web servers. Request Manager that runs on these front-end web servers decides to which SharePoint front-end web servers it will send the requests and then routes the requests.