The Time is Here for Just-in-Time Systems: Challenges and Opportunities
Core systems like key-value stores have historically taken years to build, and are designed to be general so as to amortize cost across deployments, paying a significant performance cost. We argue that LLM-based coding agents now make a different approach tractable: Just-in-Time Systems, in which the entire system is synthesized from scratch, specialized to the environment, workload, and required system properties. We present a JIT system synthesis pipeline, Jitskit, and explore its effectiveness in synthesizing key-value stores from spec cards that span different YCSB workloads, deployment constraints (e.g., compute resources), and system properties (e.g., consistency and durability). Ji...
| Authors | Shu Liu, Alexander Krentsel, Shubham Agarwal et al. |
|---|---|
| Primary category | cs.DB |
| Published | 22 May 2026 |
| Last updated at source | 22 May 2026 |
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