However, the most significant limitation I see for the Single Server service is the fact you’re not able to co-locate your Azure application tier in the same physical location (called an Availability Zone-think ‘data center’) as the database tier. Because this gateway service is additional work in establishing the connection to the database service, this can slow down some connections. One big issue is connections coming to Single Server are established through a gateway responsible for the routing to the physical location of the database service. The reason for this is because of the present limitations of the Single Server product. I believe Single Server will eventually be discontinued in lieu of Azure Database for PostgreSQL Flexible Server (discussed below). The main difference between the General Purpose and Memory Optimized tiers are the resources available to each SKU. Also better asuited for production workloads. Memory Optimized – The Memory Optimized tier is on a faster set of VMs with more virtual cores available and more memory per virtual core.General Purpose – Better suited for production workloads.It’s unlikely you’ll use this tier for a production-level application unless the application generates little activity. Basic - Basic is great for getting a feel for using the service and developing applications.There are three pricing tiers to choose when configuring your Single Server: The underlying OS (Windows for Single Server) is administered for you, and as an administrator, you have no access to it. For example, backups are automatic, with the ability to restore the database to a point in time if needed. With Single Server, most of the regular administration of the database and underlying OS is taken care of for you. This provides a high degree of availability, as much throughput as your system requires, and security and redundancy.Īzure Database for PostgreSQL–Single ServerAzure Database for PostgreSQL Single Server (which I’ll refer to as Single Server) is Azure’s first PostgreSQL offering on the PaaS platform. High availability for the VM can be provided by Azure, and you also have access to Azure’s underlying storage system. You’re responsible for not only the administration of the PostgreSQL database engine but also any required patching for the underlying OS (which will most likely be Linux since we’re discussing PostgreSQL). The benefit of this Infrastructure as a service (IaaS) approach is you still have the highest degree of control over how the machine and database service is administered. In Azure, you also have the option to install the PostgreSQL engine on an Azure VM and handle the administration and daily needs as though you were managing the server in your own data center. This can be incredibly useful if your application has cyclical usage patterns, such as needing more processing resources to complete work during the holiday shopping season. Because PaaS takes care of most of the day-to-day administration needs, DBAs and developers have more time to focus on providing business value instead of mundane tasks.Īnother advantage of a PaaS service is you can scale up and scale back resources as necessary. For example, PaaS services for RDBMSes typically take care of the backups and provide some form of high availability, security, maintenance, and logging. One of the biggest advantages of a PaaS offering is the fact most of the hard work of administration is done for you by the cloud provider. The PostgreSQL product running on the Microsoft PaaS platform gives OSS developers almost complete feature parity (with fewer available extensions) with the on-premises version of PostgreSQL while automating a large proportion of the daily tasks associated with administering a relational database. What is Azure Database for PostgreSQL?Azure Database for PostgreSQL is the Microsoft platform as a service (PaaS) implementation of the PostgreSQL relational database, hosted on the Azure cloud platform. It’s worth noting these products are large with many detailed aspects, so consider this article a cursory, high-level overview of each offering. In this article, I’ll discuss one of the most popular OSS relational databases, PostgreSQL, and the options you have for this database in the Microsoft Azure cloud. Open-source software (OSS) relational database management systems (RDBMSes) are becoming incredibly popular in the cloud computing world.
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