Which features discussed in the chapter 38 are most important to you in selecting a monitoring system for a site and why? Note: to answer this question, you are required to read Chapter 38: Service Monitoring, page 671 of this ebook “The Practice of System and Network Administration -3ed”.
Which features discussed in the chapter 38 are most important to you in selecting a monitoring system for a site and why?
Note: to answer this question, you are required to read Chapter 38: Service Monitoring, page 671 of this ebook “The Practice of System and Network Administration -3ed”.
To detect and prevent failures, it is very convenient to have a good monitoring tool, that is why you need a monitoring system. Monitoring systems are responsible for controlling the technology used by a company (hardware, networks and communications, operating systems or applications, among others) in order to analyse their operation and performance and to detect and alert about possible errors. A good monitoring system is able to monitor devices, infrastructures, applications, services, and even business processes.
When monitoring websites or web-applications you want to be able to monitor a complete navigational path, just as a user would navigate. The data you want to look at includes each "step" in the path and the response times for each call. This could be just one page, or many pages.
- DOM Load: The time it took to complete parsing the page's documents. Note: referenced style-sheets, images and sub-frames may not have completed loading.
- Page Load: The time it took for the page's documents (all referenced objects and scripts, style-sheets, images) to be fully loaded into the browser. Note: This does not account for load time of dynamic content such as AJAX.
- Perceived User Experience (PUX): First Paint The time it takes for the page to start rendering then the time it takes for all visible content rendered on the page to "stabilize" above the fold
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