Mantle: Efficient Hierarchical Metadata Management for Cloud Object Storage Services. - Jiahao Li; Biao Cao; Jielong Jian; Cheng Li 001; Sen Han; Yiduo Wang 002; Yufei Wu 011; Kang Chen 001; Zhihui Yin; Qiushi Chen; Jiwei Xiong; Jie Zhao 020; et al. (SOSP, 2025)