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=== Monitoring and debugging ===
Diagnosing performance or excessive resource usage problems with serverless code may be more challenging than with traditional server code, because although entire functions can be timed,<ref name='lambda-api-gateway'>{{cite web|url=http://www.forbes.com/sites/janakirammsv/2015/07/16/paas-vendors-watch-out-amazon-is-all-set-to-disrupt-the-market/|title=PaaS Vendors, Watch Out! Amazon Is All Set To Disrupt the Market|last=MSV|first=Janakiram|date=16 July 2015|accessdate=10 July 2016}}</ref> there is typically no ability to dig into more detail and attach [[profiling (computer programming)|profilers]], [[debugger]]s or [[Application Performance Management|APM]] tools - and the environment in which the code runs is typically not [[open source]], so its performance characteristics cannot be precisely replicated in a [[Deployment environment#Development|local environment]].
== See also ==
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