title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½ÑÑ , Ð²ÑÑÐ¾ÐºÐ¾Ð½Ð°Ð³ÑÑÐ¶ÐµÐ½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼
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: Development of distributed, highly loaded systems
Creators: name: ÐÐ¾Ð½Ð¾Ð¼Ð°ÑÐµÐ², Ð¡ÑÐµÐ¿Ð°Ð½
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: 2022
Subjects: ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½ÑÐµ ÑÐµÑÐ¸
ÑÐ°ÑÐ´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð¼Ð°ÑÑÑÐ°Ð±Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð½Ð°Ð³ÑÑÐ·ÐºÐ°
social networks
sharding
scaling
load

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description: Topic of the final qualification work: "Development of a high-load application". This work is devoted to the process of developing a service for a highly loaded system in conditions with an increased risk of interruptions. We will understand the development of the service on the Bookmarks service for the large social network Odnoklassniki. In the process of doing the work, we encountered a number of difficulties that include a composite system, including a composite NoSQL database.Â The development of the service took place on the basis of the existing infrastructure using the approaches already established in the code base. First, the design and technical requirements for the service were determined. Then a data schema was developed to be applied. Further, it was necessary to fulfill a number of conditions for the fulfillment of the guarantees imposed on the service. The service allows the user to save various kinds of content and return to it later, as needed.Â Due to the requirements imposed by high loads, a number of conditions had to be met. As the reliability of data storage, the speed of access to them, support for monitoring the status of the service. After successful development, an A/B experiment was conducted. The impact on the business of metrics and correction based on user feedback are considered.