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Help with url rewrite rule abyss web server series#

consider an example where you have a redirect status set and in the response location tag is set to in web server in respect to the request forwarded from ARR server and this has to be notified to the end client. Imagine the internet exposed url is and you have the backend servers contoso1 and contoso2. Reverse rewrite host in response headers: This option might not be of much value over here but its a very important setting while having reverse proxy. I forgot to include explanation for Reverse rewrite host in response headers in the image while creating it. For example, if the server variable is QUERY_STRING, the hashed value is based on the names in the request query string.

Request hash – Distributes traffic based on the hashed value of the configured server variable or URL.

When more than one query string name is specified, the concatenated string of the corresponding query string value is used for the hash.

Query string hash – Distributes traffic based on the hashed value of the query string value.

Server variable hash – Distributes traffic based on a hashed value of a server variable.

Least response time – Distributes traffic based on the fastest response time from the servers, which enables the server to respond most quickly.

Requests are routed to the server with the least number of current HTTP requests.

Least current request – Distributes traffic based on the current number of HTTP requests between ARR and each of the application servers.

In an even distribution, the server with the least amount of data will receive the next request. Requests are routed so that the amount of data is load balanced.

Weighted total traffic – Distributes traffic based on the size of the requests and responses in bytes.

Each server can receive the same distribution of requests or a custom distribution.

Weighted round robin – Distributes traffic based on the number of incoming requests and their normalized weight.

Below are the available algorithm options about load balancing and a brief introduction about them. The options present are all standard algorithms and you can find info about these algorithms over internet about how they work. Over here you can specify the algorithm you want to use to perform load balancing and based on what criteria the incoming requests should be split between your web servers. Select how you want to handle query string values from the following options: Enabling request consolidation reduces the number of requests when streaming live content. Select this check box to configure the request consolidation feature.

By default, ARR caches content to the primary disk cache after it is configured. Select this check box to use your configured disk cache locations. This option will help you in caching content received from the backend server when the content has not been changed.Įnter the length of time, in seconds, that you want cached content to be stored. This is similar to your IIS caching where you have the above mentioned options. Let’s get familiarized with the options present in the ARR server farms UI which will help us during our discussion.īelow are the important options which we need to familiarize ourselves with when we want to use server farms or ARR as a load balancer. First we will concentrate on how we can use ARR as a load balancer.īefore going ahead and using ARR as a load balancer.

Help with url rewrite rule abyss web server series#

In this series we will discuss 1) and 2). WFF is not tested completely from IIS 8 and onwards. In the next series of upcoming blogs I will be discussing how we can leverage ARR and URL rewrite with ARR.ĪRR is an out of band module available for IIS 7.x and onwards.ġ) As a load balancer when you want to load balance requests between multiple servers.Ģ) As a reverse proxy where your web servers are hidden from the internet world.ģ) It can also be used for platform provisioning and application provisioning(by this I mean keeping configuration and features installed on top of IIS in sync between multiple servers) with the help of web deploy(which is famously know as web farm framework WFF).

In my previous blogs I had mentioned how we can use URL rewrite without ARR in picture.