Wang, L. Chu, C.P. Guo, F.Q. He, Y.C. Jin, D.P. Kang, M.T. Liu, J. Wu, X. Zhang, Y.L. Zhao, Z. Zhu, P. JACoW Publishing Geneva, Switzerland 2226-0358 978-3-95450-209-7 10.18429/JACoW-ICALEPCS2019-MOPHA158 English 611-613 MOPHA158 database interface electron HOM framework Contribution to a conference proceedings 2020 2020-08 https://doi.org/10.18429/JACoW-ICALEPCS2019-MOPHA158 https://jacow.org/icalepcs2019/papers/mopha158.pdf Compact Electronic Logbook System (Clog) is designed to record the events in an organized way during operation and maintenance of an accelerator facility. Clog supports functionalities such as log submission, attachment upload, easy to retrieve logged messages, RESTful API and so on, which aims to be compact enough for anyone to conveniently deploy it and anyone familiar with Java EE (Enterprise Edition) technology can easily customize the functionalities. After the development is completed, Clog can be used in accelerator facilities such as BEPC-II (Beijing Electron/Positron Collider Upgrade) and HEPS (High Energy Photon Source). This paper presents the design, implementation and development status of Clog.