Questions tagged [virtual-machine]

A virtual machine is an emulation layer between a program and the OS that presents to the application a specialized environment to run in, than the raw environment that the OS provides.

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One vagrant file (/var/www/VagrantFile) for multiple apps

I manage multiple apps in my dev: /var/www/ qa jt auth We have a QA vagrant which runs QA app in its own vagrant. My understanding was that each app would run its own VM but this would ...
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how to combine logs coming from multiple virtual machines for processing?

Scenario: Two virtual machines produce logs. I want these logs to be sent to a central server for processing (as soon as a line of these logs is generated-->streaming ). The condition here is that I ...
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How is memory modeled in projects like Apache Spark or Druid?

In the past couple of months I've worked with both Apache Spark and Druid for some projects. As I've gone through the process of learning how to use these tools, I've spent some time reading through ...
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How do VMs and GCs treat objects which wrap yet active resources, but that are unreachable from user code?

I am building an interpreter in C for a simple programming language. The interpreter is fitted with a built in garbage collector. The GC simply marks all objects which are linked from some root (the ...