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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Intellectual Technologies on Transport</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Intellectual Technologies on Transport</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Интеллектуальные технологии на транспорте (сетевой электронный научный журнал), Intellectual Technologies on Transport</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="online">2413-2527</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">6a9c167f32807fdbab8762be</article-id>
   <article-id pub-id-type="doi">10.20295/2413-2527-2026-347-44-55</article-id>
   <article-id pub-id-type="edn">qcmwwh</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>МАТЕМАТИЧЕСКОЕ И ПРОГРАММНОЕ ОБЕСПЕЧЕНИЕ ВЫЧИСЛИТЕЛЬНЫХ КОМПЛЕКСОВ И СЕТЕЙ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>MATHEMATICAL AND SOFTWARE SUPPORT FOR COMPUTER COMPLEXES AND NETWORKS</subject>
    </subj-group>
    <subj-group>
     <subject>МАТЕМАТИЧЕСКОЕ И ПРОГРАММНОЕ ОБЕСПЕЧЕНИЕ ВЫЧИСЛИТЕЛЬНЫХ КОМПЛЕКСОВ И СЕТЕЙ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Investigation of Key-Value Model Performance in PostgreSQL and Redis: A Comparative Analysis of Read/Write Operations and Parallel Load Impact</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Сравнительный анализ реализации модели «ключ — значение» в PostgreSQL и Redis: оценка задержек и пропускной способности</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Волошин</surname>
       <given-names>Ратмир Анатольевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Voloshin</surname>
       <given-names>Ratmir Anatolievich</given-names>
      </name>
     </name-alternatives>
     <email>vratmir@yandex.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Хомоненко</surname>
       <given-names>Анатолий Дмитриевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Khomonenko</surname>
       <given-names>Anatoly Dmitrievich</given-names>
      </name>
     </name-alternatives>
     <email>khomon@mail.ru</email>
     <bio xml:lang="ru">
      <p>доктор технических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of technical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Юдников</surname>
       <given-names>Степан Сергеевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Yudnikov</surname>
       <given-names>Stepan Sergeevich</given-names>
      </name>
     </name-alternatives>
     <email>s.yudnikovv@gmail.com</email>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Петербургский государственный университет путей сообщения Императора Александра I</institution>
     <country country="RU" xml:lang="ru">Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Emperor Alexander I St. Petersburg State Transport University</institution>
     <country country="RU" xml:lang="en">Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Петербургский государственный университет путей сообщения Императора Александра I</institution>
     <city xml:lang="ru">Санкт-Петербург</city>
     <country country="RU" xml:lang="ru">Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Emperor Alexander I St. Petersburg State Transport University</institution>
     <city xml:lang="en">Saint Petersburg</city>
     <country country="RU" xml:lang="en">Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Петербургский государственный университет путей сообщения Императора Александра I</institution>
     <city xml:lang="ru">Санкт-Петербург</city>
     <country country="RU" xml:lang="ru">Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Emperor Alexander I St. Petersburg State Transport University</institution>
     <city xml:lang="en">Saint Petersburg</city>
     <country country="RU" xml:lang="en">Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2026-10-01T21:00:00+00:00">
    <day>01</day>
    <month>10</month>
    <year>2026</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2026-10-01T21:00:00+00:00">
    <day>01</day>
    <month>10</month>
    <year>2026</year>
   </pub-date>
   <issue>3</issue>
   <fpage>44</fpage>
   <lpage>55</lpage>
   <history>
    <date date-type="received" iso-8601-date="2026-08-09T21:00:00+00:00">
     <day>09</day>
     <month>08</month>
     <year>2026</year>
    </date>
    <date date-type="accepted" iso-8601-date="2026-08-26T21:00:00+00:00">
     <day>26</day>
     <month>08</month>
     <year>2026</year>
    </date>
   </history>
   <permissions>
    <copyright-statement xml:lang="ru">© 2026 Волошин Р.А., Хомоненко А.Д., Юдников С.С.</copyright-statement>
    <copyright-statement xml:lang="en">© 2026 Voloshin R.A., Khomonenko A.D., Yudnikov S.S.</copyright-statement>
    <copyright-year>2026</copyright-year>
    <copyright-holder xml:lang="ru">Волошин Ратмир Анатольевич, Хомоненко Анатолий Дмитриевич, Юдников Степан Сергеевич</copyright-holder>
    <copyright-holder xml:lang="en">Voloshin Ratmir Anatolievich, Khomonenko Anatoly Dmitrievich, Yudnikov Stepan Sergeevich</copyright-holder>
   </permissions>
   <self-uri xlink:href="https://itt-pgups.ru/en/nauka/publications/6a9c167f32807fdbab8762be/view">https://itt-pgups.ru/en/nauka/publications/6a9c167f32807fdbab8762be/view</self-uri>
   <abstract xml:lang="ru">
    <p>Предлагается экспериментально обоснованный подход к сравнению производительности реализации модели «ключ — значение» в PostgreSQL и Redis. Цель: оценка задержек и пропускной способности операций чтения и записи при различной степени параллельной нагрузки. Методы: анализ архитектур PostgreSQL (MVCC, WAL, индексы B-tree, GIN, типы jsonb и hstore) и Redis (in-memory-хранение, строки и хэши, TTL, pipelining); создание экспериментального стенда; генерация тестовой таблицы объемом 1 000 000 записей; нагрузочное тестирование с использованием pgbench и redis-benchmark при параллельности от 1 до 128 клиентов; измерение пропускной способности, средней и хвостовой задержек (p95, p99). Результаты: Redis обеспечивает в 5–10 раз меньшую задержку чтения и в 3–5 раз более высокую пропускную способность по сравнению с PostgreSQL для точечных операций GET/SET; использование pipelining позволяет дополнительно повысить пропускную способность в 2–3 раза; PostgreSQL сохраняет преимущество в универсальности, поддерживая транзакции, сложные выборки и долговременное хранение. Практическая значимость: разработанная методика тестирования и полученные количественные оценки применимы при выборе архитектуры хранения для высоконагруженных информационных систем, включая системы мониторинга и трекинга на транспорте.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>An experimentally substantiated approach to comparing the performance of the key-value model implementation in PostgreSQL and Redis is proposed. Purpose: to evaluate the latency and throughput of read and write operations under varying degrees of parallel load. Methods: analysis of PostgreSQL architecture (MVCC, WAL, B-tree and GIN indexes, jsonb and hstore types) and Redis architecture (in-memory storage, strings and hashes, TTL, pipelining); creation of an experimental testbed; generation of a test table with 1,000,000 records; load testing using pgbench and redis-benchmark with parallelism from 1 to 128 clients; measurement of throughput, average and tail latencies (p95, p99). Results: Redis provides 5–10 times lower read latency and 3–5 times higher throughput compared to PostgreSQL for point GET/SET operations; the use of pipelining additionally increases throughput by 2–3 times; PostgreSQL retains advantages in versatility, supporting transactions, complex queries, and long-term storage. Practical significance: the developed testing methodology and obtained quantitative estimates are applicable when choosing a storage architecture for highload information systems, including monitoring and tracking systems in transport.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>PostgreSQL</kwd>
    <kwd>Redis</kwd>
    <kwd>модель «ключ — значение»</kwd>
    <kwd>задержка</kwd>
    <kwd>пропускная способность</kwd>
    <kwd>высоконагруженные транзакции</kwd>
    <kwd>jsonb</kwd>
    <kwd>hstore</kwd>
    <kwd>in-memory-хранилище</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>PostgreSQL</kwd>
    <kwd>Redis</kwd>
    <kwd>key-value model</kwd>
    <kwd>latency</kwd>
    <kwd>throughput</kwd>
    <kwd>high-load transactions</kwd>
    <kwd>jsonb</kwd>
    <kwd>hstore</kwd>
    <kwd>in-memory storage</kwd>
   </kwd-group>
  </article-meta>
 </front>
 <body>
  <p></p>
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