A good website monitoring service is going to do much more than simply send a reminder when a ocado. The best services will break down the response period of a web request into important categories that will enable the system administrator or webmaster to optimize the server or application to provide the best possible overall response time.
Listed below are 5 key components of response time for an HTTP request:
1.DNS Lookup Time: Enough time it takes to get the authoritative name server for that domain and for that server to eliminate the hostname provided and return the right IP address. If this time is just too long the DNS server should be optimized in order to provide a faster response.
2.Connect Time: The time has come required for the net server to answer an incoming (TCP) socket connection and ask for and to respond by setting up the connection. If this sounds like slow it usually indicates the os is trying to respond to more requests laptop or computer can handle.
3.SSL Handshake: For pages secured by SSL, this is the time required for either side to negotiate the handshake process and set up the secure connection.
4.Time and energy to First Byte (TTFB): This is the time it takes for that web server to respond with the first byte of content following the request is shipped. Slow times here more often than not mean the internet application is inefficient. Possible reasons include inadequate server resources, slow database queries and other inefficiencies associated with application development.
5.Time and energy to Last Byte (TTLB): This is the time needed to return all the content, following your request has been processed. If this sounds like taking a long time it usually indicates that the Internet connection is simply too slow or possibly overloaded. Increasing bandwidth or acquiring dedicated bandwidth should resolve this problem.
It is extremely hard to diagnose slow HTTP response times without all this information. Minus the important response data, administrators are still to guess about where the problem lies. Considerable time and money may be wasted trying to improve different aspects of the web application with the hope that something will continue to work. It's possible to completely overhaul an online server and application only to find out the whole problem was really slow DNS responses; an issue which exists on the different server altogether.
Make use of a website monitoring service that will a lot more than provide simple outage alerts. The most effective services will break the response time into meaningful parts that can allow the administrator in order to identify and correct performance problems efficiently.