A three-layer hybrid data architecture for e-commerce systems, structured into operational, analytical, and intelligence layers, has been presented in this paper. The architecture follows polyglot persistence principles, integrating relational, non-relational, graph, and distributed analytical storage paradigms into a unified hybrid data processing framework.
Problem Statement and Purpose of the Work. This article studies the cutting force in the radial-circular method and its influence on the reliability of the gear-cutting process. Relevance. Gear manufacturing machines are classified as automated equipment. This applies to machines equipped with CNC systems, as well as convential machines operating in automatic mode for extended periods, given the high labour intensity of gear cutting operations.
The article is devoted to researching reliability and fault tolerance management mechanisms in infocommunication networks, focusing on modeling and testing of gateway redundancy protocols. The work considers the VRRP (Virtual Router Redundancy Protocol) and GLBP (Gateway Load Balancing Protocol) protocols, which ensure continuous network operation in the event of a primary gateway failure. The purpose of the study is to compare these protocols using the virtual environments EVE-NG and Containerlab, as well as to test them on physical and virtual devices.
The existing means of calculating reliability indicators of software systems are analyzed. It has been established that to determine the reliability indicators of software systems, it is advisable to use the structural-logical analysis of reliability block diagrams, since it clearly and most adequately reflects the process of calculating the reliability indicators of the software system as a whole and its components in particular.
Structural redundancy is included in modern data transmission systems to ensure the specified reliability indicators. Structural redundancy gives the system fault tolerance and significantly increases its reliability. To manage the redundant resource, it is necessary to have additional tools that will connect the redundant equipment to the main configuration of the data transmission system. The redundant equipment is a separate technical means and, from the point of view of reliability, it is connected in series with other modules of the data transmission system.
The article describes the optimization of the process of disaster recovery of information infrastructure services by implementing the ability to restore service functionality without requiring a full recovery from backup storage. It outlines the criteria and parameters of the network that have a critical impact on recovery in the event of emergencies, allowing for the assessment of the solution's effectiveness in post-disaster recovery.
Описано алгоритм та здійснено програмну реалізацію моделі надійності технічної нерезервованої системи з обмеженою кількістю відновлень. Розроблене програмне забезпечення (ПЗ) дає змогу аналізувати показники надійності різних варіантів побудови нерезервованої відновлюваної технічної системи з обмеженою кількістю відновлень для різної кількості елементів та кількості відновлень. У ПЗ передбачено можливість візуалізації отриманих результатів обчислень.
Для визначення показників довговічності систем зі структурним резервуванням запропоновано метод, який ґрунтується на застосуванні багатовимірних ациклічних марковських моделей. На основі запропонованого методу для дубльованої системи із паралельним резервуванням визначено гамма-процентний ресурс, інтенсивність відмов та ймовірність розподілу за відмовами.
Problem statement. The production of oil crops and products of their processing has significantly increased in recent decades. Vegetable oils are mainly produced by pressing oilcontaining raw materials using screw-type presses. During the press operation, there is a need to adapt its working regimes to the seeds of individual crops while ensuring the possibility of adjusting certain operation parameters that are set technologically. Purpose.
The software stochastic model of operating behavior of failure-resistant systems with majority type of voting {3 of 5} is intended for information technology design of communication or technological systems of critical infrastructure facilities.