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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Informacionnye Tehnologii</journal-id><journal-title-group><journal-title xml:lang="en">Informacionnye Tehnologii</journal-title><trans-title-group xml:lang="ru"><trans-title>Информационные технологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1684-6400</issn><publisher><publisher-name xml:lang="en">New Technologies Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">716494</article-id><article-id pub-id-type="doi">10.17587/it.32.361-372</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Software engineering</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Программная инженерия</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Modeling event flows at the input of information systems with a message broker</article-title><trans-title-group xml:lang="ru"><trans-title>Моделирование потоков событий на входе информационных систем с брокером сообщений</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Parinov</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Паринов</surname><given-names>П. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Assistant of the Department</p></bio><bio xml:lang="ru"><p>ассистент кафедры</p></bio><email>parinov_p@sc.vsu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sirota</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Сирота</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. of Tech. Sc., Head of the Department</p></bio><bio xml:lang="ru"><p>д-р техн. наук, проф., зав. кафедрой</p></bio><email>sir@cs.vsu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Voronezh State University</institution></aff><aff><institution xml:lang="ru">Воронежский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-07-17" publication-format="electronic"><day>17</day><month>07</month><year>2026</year></pub-date><volume>32</volume><issue>7</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>361</fpage><lpage>372</lpage><history><date date-type="received" iso-8601-date="2026-07-16"><day>16</day><month>07</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-07-16"><day>16</day><month>07</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Informacionnye Tehnologii</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Информационные технологии</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Informacionnye Tehnologii</copyright-holder><copyright-holder xml:lang="ru">Информационные технологии</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/1684-6400/article/view/716494">https://journals.eco-vector.com/1684-6400/article/view/716494</self-uri><abstract xml:lang="en"><p>The problem of modeling event flows at the input of information systems using a message broker is considered. Approaches are proposed that allow reproducing key statistical characteristics of real event flows, such as intensity, temporal structure, and seasonal fluctuations, based on both historical and real-time data. Two modeling algorithms are described: an adaptive algorithm for modeling the flow of events with a limited aftereffect, based on the Lainiotis separation method, and an algorithm based on the Markov model for changing discrete states that determine the flow parameters. Experiments have been conducted to compare the flows of events operating in a real system with a message broker and flows modeled using the proposed algorithms.</p></abstract><trans-abstract xml:lang="ru"><p>Рассматривается задача моделирования потоков событий на входе информационных систем с использованием брокера сообщений. Предлагаются подходы, позволяющие воспроизводить ключевые статистические характеристики реальных потоков событий, такие как интенсивность, временная структура и сезонные колебания, на основе как исторических, так и реальных данных, поступающих в режиме реального времени. Описаны два алгоритма моделирования: адаптивный алгоритм моделирования потока событий с ограниченным последействием, основанный на методе разделения Лайниотиса, и алгоритм на основе марковской модели смены дискретных состояний, определяющих параметры потока. Проведены эксперименты, направленные на сопоставление потоков событий, действующих в реальной системе с брокером сообщений, и потоков, моделируемых с использованием предложенных алгоритмов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>message broker</kwd><kwd>information system</kwd><kwd>event flow modeling</kwd><kwd>Lainiotis separation method</kwd><kwd>Markov model of discrete state change</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>брокер сообщений</kwd><kwd>информационная система</kwd><kwd>моделирование потоков событий</kwd><kwd>метод разделения Лайниотиса</kwd><kwd>марковские модель смены дискретных состояний</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Artamonov I. V. Performance indicators of microservice systems, Bulletin of NGIEI, no. 8 (87), pp. 24—33 (in Russian).</mixed-citation><mixed-citation xml:lang="ru">Артамонов И. В. 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