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Information × Registration Number 0226U002723, (0117U004913) , R & D reports Title Optimizing of Web-oriented systems with a big data popup.stage_title Оптимізація роботи веб-орієнтованих систем з великим об'ємом даних Head Krilov Yevhen O., к.т.н. Registration Date 04-03-2026 Organization National Technscal University of Ukraine "Kiev Polytechnic Institute". popup.description1 popup.description2 A method of ensuring data consistency in distributed NoSQL document-oriented databases using a transactional clock has been developed. It receives transactions from client applications and stores them in appropriate queues. Queues are processed depending on the priority of the transaction. With the highest priority, the queue is processed earlier, compared to those with a lower priority. This allows you to figure out critical data (for example, transmitting financial transactions) that should be processed first. When the queue is processed, the transaction clock merges the transactions into a resulting transaction. To do this, it uses the creation time of the transaction, which allows them to be globally ordered and merged in the order in which they were created, rather than received by the transactional clock. After receiving the resulting transaction, it is transmitted to other replicas on which writing takes place. It should be noted that when using a transactional clock, read operations take place directly from replicas, which allows to reduce the load on the host machine. The active anti-entropy method has been improved using a Bloom spectral filter and a hashing algorithm instead of a Merkle tree. Its creation is due to the fact that the classical mechanism of active anti-entropy uses many expensive hashing operations. Also, when hashing a large amount of data, the probability of collisions increases, which can affect the timely identification of inconsistencies. Product Description popup.authors Yevhen O. Krilov Bohdan Y. Zhurakovskyi Yaroslav I. Kornaga Valerii Nikitin Volodymyr K. Anikin popup.nrat_date 2026-03-04 Close