AppDynamics vs SQL Sentry

• Giving a network map of our application that shows where slowdowns are occurring and where network traffic is running into a bottleneck.
• We are able to gather node-specific information that shows the number of sessions a web server or even Redis session statistics.
• We use AppDynamics to give a holistic view of our application allowing us to quickly narrow in on problems.

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• Provides a fantastic review capability for historic data, collating data in a far more efficient, presentable way than you can with default tools. You know that if a customer experienced even the slightest performance dip overnight, you can review that to the finest detail later.
• A highly customisable monitoring system, providing rock solid information which you can drill down to the smallest detail.
• An outstanding Support Team, which continues to go above and beyond any expectations.
• The perfect SQL Server monitoring platform.

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• Price of the AppDynamics is high. But it has many valuable features. This makes it difficult for small businesses to enter.
• Functionality is overkill for most small to midsize businesses (SMBs). When stacking up product units, it can get pricey for enterprises as well.
• With fine granular configs and customizations available, it will also mean that it is very complicated and requires a certain amount of knowledge before we can make full use of all features in the product. Much careful thought and planning is required to get the most of it. Set-up will be longer. One recommendation is for features to be better documented.

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• The presentation of SQL server waits needs work. A large value on a throw away wait like cxpacket will change the scale such that an important wait like sos_schedular _yield is not readable. I have been told this is being addressed in the next release.
• Installation of the client requires sysadmin access on the repository server for the initial install. Once the install is complete sysadmin can be removed.
• There is a web interface but this does not have much of the functionality yet.
• I have not found a way to view page splits over time.

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• AppDynamics isn't cheap, but it definitely helps to ensure our applications and APIs are up and running without issue. The alerting is usually good but occasionally mixed, for example sometimes flagging a single error as a critical issue since the API is usually completely error free.
• The cost saving in terms of trouble shooting and analyzing issues in production is fantastic - to know about issues before they are reported by customers enables you to be proactive in resolving them and ensuring maximum up time for our applications.

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• Better customer service as it alerts me automatically to loss of service issues so I can react and either get things fixed before it impacts the customers or to let my management know as soon as possible
• It helps me find expensive SQL so our customers get better performance and we make better use of our resources

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