Features of containers in Doker

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In the case of containers, a fundamentally different approach is used. The isolation level is similar to virtual machines, but the load on the hardware is reduced many times over. This is achieved by competent use of low-level mechanisms of the main OS.

The main feature of containers is their relatively short life cycle. Each of the "sandboxes" can be stopped, restarted and, if necessary, destroyed along with all the data inside it. In this regard, there is a special rule of application design known as Stateless. It recommends avoiding storing important data in containers.
Containers are used to pack only those processes and dependencies that are russia rcs data required to execute the code. Thanks to this, the launch is carried out quite quickly. The lightweight nature of containers, in turn, allows you to save space on the carrier.
Each process is assigned its own container for launch, which can be safely disabled, for example, for debugging and updating. This will not affect the operation of the entire program.
As a result of containerization, processes are reliably isolated from each other. This increases the overall security of the entire system. Applications running inside the container do not affect the functioning of the main operating system in any way, since they do not have access to it.