GhostServe: A Lightweight Checkpointing System in the Shadow for Fault-Tolerant LLM Serving
The rise of million-token, agent-based applications has placed unprecedented demands on large language model (LLM) inference services. The long-running nature of these tasks increases their susceptibility to hardware and software faults, leading to costly job failures, wasted resources, and degraded user experience. The stateful key-value (KV) cache, which grows with the sequence length, presents a central challenge as it is a critical and vulnerable component in distributed serving systems. In this work, we propose GhostServe, a novel checkpointing solution to facilitate fault-tolerant LLM serving. Specifically, GhostServe protects the streaming KV cache in the shadow by applying erasure...
| Authors | Shakya Jayakody, Youpeng Zhao, Chinmay Dhanraj Nehate et al. |
|---|---|
| Primary category | cs.DC |
| Published | 26 March 2026 |
| Last updated at source | 26 March 2026 |
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