Docker
Virtualization Virtualization is the illusion of private resources, provided by the software. We have virtual memory, virtual machine (hardware), virtual machine (languages), virtual operating system (container). Each process using a virtual address space is not aware of other processes using memory (illusion of private memory). Virtualized resources include CPU, RAM, disks, network devices, etc. VMs rarely use all their allocated resources, so overbooking is possible. If each program is deployed to a different VM, operating system overheads dominate. JVM or PVM runs Java Bytecode and Python Bytecode. Programs written in Java and Python are compiled to their corresponding byte code instead of a specific machine code. Virtual operating systems, or a containers, are run on a some flavor of Linux. You can have a container of Ubuntu and a container on Debian (but not Windows, since they are running on top of Linux). Containers are more efficient than virtual machines, but less flexible. Containers and Virtual Machines are Sandboxes.
Read note →