Express.js-compatible Web Server with Native Kernel for Unix Family Operating Systems

All the currently existing integrable web server frameworks for Node.js runtime are written in JavaScript, a key language in the ecosystem of this software platform, for accordance and easier maintenance. Preference to this approach is definitely reasonable and sufficient for using isomorphic software components of web applications, i.e. template engines which execute on prepared data. However, performance of large transformation operations suffers due to the interpreter overhead, which casts doubt on the widespread use of this approach. The interpreter overhead is negligible for small web applications, yet significant for large-scale web applications. Therefore, a different concept of Node.js web server applications is required for dealing with slow execution of heavy business logic. This can be solved by moving some parts of them to native dynamically linked libraries. This work describes implementation details, the principles and features of logical domains interaction of the integrable web server with native kernel for Node.js platform, which is compatible in the interface with the basic components and mechanics of Express.js server framework, the most popular frameworks for developing HTTP servers running on Node.js platform. The advantages of this product over the main competing software products, their features and differences are also considered. This paper consists of 42 pages, 3 chapters, 4 illustrations, 13 sources, 4 applications. Keywords — web; server; http; middleware; Express.js; Node.js; native addons; C++; JavaScript; libuv; V8; Event Loop.