Ask yourself this very simple set of questions. How many applications does your company have that warrant management on an availability, response time, and integrity of service basis? For how many of those applications do you have a functional Application Performance Management (APM) Â solution in place that actually allows you to measure and guarantee availability, response time and integrity of service?
If you are like most enterprises you might have 500 or 1000 applications that meet the above criteria, but you probably only have 25 or 50 of your most important applications under management. Why is this:
- Many enterprises have confused (with vendor help) the notion of monitoring the resources that an application uses with its performance. Users of an application do not call up and say, “the application is using too much memory and my quality of service isÂ awful”. They call up and say, “it is slow”. Slow means response time is awful.
- If you have deployed APM tools from first generation APM vendors like CA (Wily), HP (HP Diagnostics), IBM (Tivoli ITCAM) what you have likely found is that these products are infinitely complex to install, configure and make work and that they require large amounts of vendor provided professional services in order to make them be able to monitor an application in production.
- These products are completely out of step with how applications are deployed today. Years ago applications got deployed on a few high end Weblogic or WebSphere applications servers and you were happy to pay $20,000 per server to monitor these applications. Today applications are deployed on scaled out commodity hardware and middleware, and you are not going to pay 4X what it cost to deploy the entire applications server (hardware and software) just to monitor it.
- These products are completely out of step with how applications are developed today. Today many organizations use Agile methodologies to roll changes into production in a monthly or even weekly basis. Legacy APM products require manual actions every time that the application changes. This renders them irrelevant in rapidly changing environments.
- Legacy APM products are clueless when it comes to distributed data center deployments and the cloud. Their communications model assumes that the management system can poll the agents inside of the JVM’s or .NET CLR over a subnet. That means you cannot deploy a management system inside of your data canter and manage agents that happen to be running in an outsourced data center or a cloud.
- There is tremendous innovation in applications platforms, but APM products have for the most part not kept up. Developers are under constant pressure to produce more business functionality in code, but have less time and less money to do it. This means that new platforms like Ruby, and PHP may be as important to you as Java and the .NET languages.
- APM vendors have largely focused upon selling to the people who develop and have to support custom developed applications in house. This leaves out the question of how to support all of the purchased applications that underlie custom developed code. For example it is not at all unusual to see custom developed applications layered on top of purchased applications like SAP, Oracle Applications or PeopleSoft.
- Legacy APM tools are completely inappropriate for monitoring applications that run on dynamic platforms like VMware, or other virtualization stacks. The reason for this is that they either rely upon resource utilization metrics as a proxy for performance, or they cannot automatically adapt to changes in the environment that supports the application.
- The APM solution(s) that you purchase should be able to address ALL of the business and performance critical applications in your enterprise. Now this may require more than one product, but you should start the process with a list of all of your important applications, whether they are purchased or custom developed, and how they are architected.
- You should clearly define what the objective of the APM solution is for you. Are you trying to more rapidly fix bugs in production for a custom developed application, or are you trying to support a purchased application in production (with no access to the underlying code).
- Points #1 and #2 above demand aÂ trade-offÂ between depth and breadth. You can easily get a first class APM solution that supports Java and .NET and that gives Â you deep dive analysis into the application stack and the database calls. You cannot get this for every application that you own, since not every application that you own is written to Java and or .NET.
- Consider the architectural nature of your application. If your application is deployed across multiple tiers of dynamically scaled out servers, then you need something that can discover transaction flows across that mesh network of servers, and trace load and response time in the process. First generation APM tools cannot and will not be able to do this for you.
- Consider your development process if you are building the most important applications for yourself. If you are rapidly changing code in production, then you need an APM tool Â that can automatically keep up and not one that requires any manual configuration any time you add a new transaction, object or method.
- Consider where every part of your application is going to be running. It used to be everything ran in the four walls of your data center. Now parts of it might be outsourced, and parts of it might run on a scale up or scale down basis in a public cloud.
- Think about the price and the long term cost of ownership of the solution. It is easy to buy something that has a consultant in the box. If it does, send it back. If you are deploying your application on commodity hardware and commodity (open source) applications stacks like Tomcat, VMware vFabric, Red Hat JBoss applications Server, and a free version of Linux, you should not pay more per server to manage the application running on it than you paid for the hardware and software platform to begin with.