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If you can’t measure it, you can’t fix it.

David Henke, SVP Engineering/Operations at LinkedIn

Building your code and deploying it into production is not enough. You also have to make sure it continues working after it gets there. This is where monitoring comes in. By monitoring, I mean all the tools and technologies you use to gain visibility into what your code and users are actually doing, such as logfiles, Google Analytics, and Nagios. In some ways, monitoring is the ying to the unit testing yang.

Usually, testing checks a ...


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