Comparison of REST and GraphQL Interfaces for OPC UA
Loading...
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2022-05
Major/Subject
Mcode
Degree programme
Language
en
Pages
17
Series
Computers, Volume 11, issue 5
Abstract
Industry 4.0 and Cyber-physical systems require easy access to shop-floor data, which allows the monitoring and optimization of the manufacturing process. To achieve this, several papers have proposed various ways to make OPC UA (Open Platform Communications Unified Architec-ture), a standard protocol for industrial communication, RESTful (Representational State Transfer). As an alternative to REST, GraphQL has recently gained popularity amongst web developers. This paper compares the characteristics of the REST and GraphQL interfaces for OPC UA and conducts measurements on reading and writing data. The measurements show that GraphQL offers better performance than REST when multiple values are read or written, whereas REST is faster with single values. However, using OPC UA directly outperforms both REST and GraphQL interfaces. As a conclusion, this paper recommends using a GraphQL interface alongside an OPC UA server in smart factories to simultaneously yield easy data access, the best performance, and maximum interoperability.Description
Funding Information: Funding: This research was funded by the Business Finland under Grant 3508/31/2019 and ITEA 3 Call 5 MACHINAIDE. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords
communication, GraphQL, Industry 4.0, interfaces, OPC UA, REST
Other note
Citation
Ala-Laurinaho, R, Mattila, J, Autiosalo, J, Hietala, J, Laaki, H & Tammi, K 2022, ' Comparison of REST and GraphQL Interfaces for OPC UA ', Computers, vol. 11, no. 5, 65 . https://doi.org/10.3390/computers11050065