Docker is a two part shell/management layer for building and running virtual linux containers. Therefore, it gives the advantages to both dev as well as ops teams who want to build something productive by resolving more problems. And Container is an execution environment to run application that shared the same underlying Operating System (OS) of the host. Examples of container include: Docker Containers, Linux Containers (LXC), Microsoft Windows Containers etc. Containers allow developers to bundle up an application with all of the parts it needs, such as libraries and other dependencies, and ship it as one package. The great thing about Docker is that it is light-weight because it relies on shared-kernel linux containers which easily allowing the running and management of applications with different requirements side by side in isolated containers. It also makes it easy to run multiple versions or instances of the same program without configuration headaches and port collisions. Docker uses a client-server architecture. Developers can focus on writing code without worrying about the system on which their code will run with docker.

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In PHALCON, as default, directory structure, and the way one write classes dictates  routes. Phalcon is blazing fast. Phalcon is different, as it is delivered as a php extension, which will be injected into the php core while running. So, we can just download the extension on Windows, or rebuild it, enable it in php.ini, and after that we got a high performance framework working. It is not easy extendable at all. Phalcon  is a completely different framework as its core files are compiled as a php extension. Its fastest PHP framework but because of the dependency on many core api’s the documentation becomes the limiting factor. Phalcon is compiled framework hence changing some core functionality would be difficult.  When one’s own code hooks into a class/method of Phalcon, that method will be executed directly as C, which is already compiled to machine code, which is basically as fast as one can get. Unlike most PHP frameworks, Phalcon is implemented as a web server extension  and aiming to boost execution speed, reduce resource usage, and handle more HTTP requests  per second than comparable frameworks written primarily in PHP.

Pros

• Extremely  fast
• The team seems really dedicated so much so they have a fundraising page to make the lead developer full time

Cons

• We’d be relying on a framework we can’t just jump in and fix if there is a bug until an official patch is out.
• It doesn’t work with HHVM

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