It’s often necessary to configure Azure virtual machines to use a consistent outbound IP address, to connect to another resource with an IP based whitelist. In a classic cloud service based deployment this was easy, all of the VM’s in the cloud service used the cloud services IP for outbound traffic and all was well.
In an Azure Resource Manager (ARM) deployment things are different. There’s no concept of cloud services and public IP’s are assigned to VM’s or load balencers.
On Tuesday at Ignite Microsoft announced a number of new Azure services, one of which was Azure DNS. The ability to host your DNS zones has been a feature of cloud providers like AWS for some time now, so it’s good to see Microsoft adding in this essential component for providing web services.
Before venturing into using Azure DNS there are a few things to be aware of, firstly it’s not (yet) available in the management portal, you can use it via PowerShell, .
This is a re-publish of a post from my old blog, but was being requested by a number of people.
A class in my current project is accessed multiple times in a session, and stores error messages that need to be read by multiple classes, so I wanted to make this class a singleton.
However a singleton in asp.net is then available to the whole application, not something I want, as error messages are per user.
Microsoft recently announced a preview of SQL Azure Elastic Database Pools. This new service allows you to create a pool of database that share the same underlying resource. This is likely to be especially useful for SaaS providers where clients are often separated by database, but don’t require all of the throughput and storage provided by a single Azure database. Using elastic database pools you can create a pool of specified resource and place your databases into it.
Picking the right Azure data centre to host your application in is critical to getting decent levels of latency. In some cases it’s very clear which data centre to use based on your audience location, but what about when things aren’t so clear? If your in Europe, which of the two locations is best? If your in the Middle East, where there are no Azure data centres, how do you find out which is the best to use?
