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Paper Abstract and Keywords
Presentation 2024-03-22 15:50
Implementation and Evaluation of Continuous Health Checks of API Server in Overload Status
Sho Kanemaru, Masaru Sakai, Yukitsugu Sasaki, Kensuke Takahashi (NTT) ICM2023-63
Abstract (in Japanese) (See Japanese page) 
(in English) When an API server is running, it is required to operate correctly while protecting the server when a lot of API requests are received. For this purpose, it is required to perform a health check to confirm that the API server is operating normally while performing flow control that does not accept requests above the threshold. There is a method to confirm that the API server is operating correctly by periodically executing the API for checking status of the API server. However, when it is used with flow control, when a lot of API requests are received, there is a problem that the health check is unexpectedly judged as a failure even when the API server is running because the request for health check is limited by flow control. In this paper, we propose a method to continue the health check of the API server while controlling the flow rate of API requests. We define the level of the health check into two stages of "application level" and "process level", and changing the confirmation layer in the health check of the process level from the application layer to the transport layer. We implemented the proposal method using the Liveness Probe and Readiness Probe features of Kubernetes. As a result of the comparative evaluation with the existing methods, it was confirmed that the proposed method can achieve both flow control and health check, and then, the considered the effectiveness from the viewpoint of the practical operation.
Keyword (in Japanese) (See Japanese page) 
(in English) API Server / Health Check / Flow Control / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 449, ICM2023-63, pp. 95-100, March 2024.
Paper # ICM2023-63 
Date of Issue 2024-03-14 (ICM) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee ICM  
Conference Date 2024-03-21 - 2024-03-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Prefectural Museum and Art Museum 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ICM 
Conference Code 2024-03-ICM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Implementation and Evaluation of Continuous Health Checks of API Server in Overload Status 
Sub Title (in English)  
Keyword(1) API Server  
Keyword(2) Health Check  
Keyword(3) Flow Control  
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1st Author's Name Sho Kanemaru  
1st Author's Affiliation Nippon Telegraph and Telephone Corp. (NTT)
2nd Author's Name Masaru Sakai  
2nd Author's Affiliation Nippon Telegraph and Telephone Corp. (NTT)
3rd Author's Name Yukitsugu Sasaki  
3rd Author's Affiliation Nippon Telegraph and Telephone Corp. (NTT)
4th Author's Name Kensuke Takahashi  
4th Author's Affiliation Nippon Telegraph and Telephone Corp. (NTT)
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Speaker Author-1 
Date Time 2024-03-22 15:50:00 
Presentation Time 20 minutes 
Registration for ICM 
Paper # ICM2023-63 
Volume (vol) vol.123 
Number (no) no.449 
Page pp.95-100 
#Pages 6 
Date of Issue 2024-03-14 (ICM) 

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