The latest articles on DEV Community by Anatoly (@trofimovdev). https://dev.to/trofimovdev https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F389976%2F6ec63a83-e3af-4ac1-b6bf-868e6a96d0c3.jpeg https://dev.to/trofimovdev en Anatoly Wed, 20 May 2020 06:37:23 +0000 https://dev.to/trofimovdev/vk-education-3gc7 https://dev.to/trofimovdev/vk-education-3gc7 <p>During the VK Education codecamp a main tasks were code refactoring and adding new functions for special projects.<br> Different companies needed different API methods and functions for their goals. Moreover, it was necessary to flexibly manage access rights. I transfered all the methods used by special projects to a new section of API and rewrote unified rights management system for them. Also, I added some functions &amp; changed Callback API methods for new projects.<br> Another key issue was ads targeting on mobile devices. A lot of Android devices could't be defined in their price category and targeting worked much worse for them. I increased the accuracy of ads targeting in several times by distributing thousands of unique devices by price category.<br> Unfortunately, due to the NDA, I cannot show the code, but it's pretty good because of 3+ reviews every Pull Request :)</p> <h2> How I built it </h2> <p>VK uses its own PHP — kPHP. It compiles to C++ and works very fast and also has static typing.<br> Moreover, I have worked with Python &amp; MySQL and a lot of servers.</p> <h2> Additional Stories </h2> <p>One day I made a mistake in the name of variable and almost broke everything 😅</p> octograd2020 githubsdp