title: ÐÐµÑÐµÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ Ð¼Ð¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ¸ÑÑÐµÐ¼Ñ ÐºÐ¾Ð¼Ð¼ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð·Ð°Ð¿Ð¸ÑÐµÐ¹ Ð² ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÐµÑÐ¸ Â«ÐÐ´Ð½Ð¾ÐºÐ»Ð°ÑÑÐ½Ð¸ÐºÐ¸Â»
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The refactoring and modernization of post commenting system in Russian social network ok.ru
Creators: name: ÐÐ¾ÑÐ½Ð¸ÑÐºÐ¸Ð¹, ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: Java
Ð±ÑÐºÐµÐ½Ð´
Ð²ÑÑÐ¾ÐºÐ¾Ð½Ð°Ð³ÑÑÐ¶ÐµÐ½Ð½ÑÐµ ÑÐ¸ÑÑÐµÐ¼Ñ
Ð¼Ð¸ÐºÑÐ¾ÑÐµÑÐ²Ð¸ÑÑ
Ð½ÐµÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÐµ NoSQL Ð±Ð°Ð·Ñ Ð´Ð°Ð½Ð½ÑÑ
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Ð¼Ð¸Ð³ÑÐ°ÑÐ¸Ñ Ð´Ð°Ð½Ð½ÑÑ
ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½ÑÐµ ÑÐµÑÐ¸
ÐÐ´Ð½Ð¾ÐºÐ»Ð°ÑÑÐ½Ð¸ÐºÐ¸
VK Group
backend
highload systems
microservices
NoSQL data bases
Cassandra
data migration
social networks
OK.RU

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description: The given work is devoted to the research and development of tree-like comment display system based on current linear system used in ok.ru, as well as a transition from an old system to a new one. During this thesis different comment display approaches used in other social networks are going to be evaluated, highlighting pros and cons of those approaches. Based on this information, the desired comment display approach for ok.ru is going to be formed, which leads to the next step of development and evaluation of different possible architectural structures. Then, the software-level implementation, based on the chosen architectural approach, is going to be described. Finally, the step-based process of enabling the system on production environment is going to be addressed as well as the evaluation of said changes. During the comparison of relevant metrics before and after the change, it becomes apparent, that transition from linear to tree-like structure has an overall positive effect on user activity, increasing the number of posted comments significantly. Thus, the research value of this work is demonstrated by showing the apparent effectiveness of the tree-like structure usage comparing to the simple linear one in the context of social networks.