NVMeCache

NVMecache is a high-performance caching system designed to leverage non-volatile memory (NVM) technologies, such as Intel Optane DC Persistent Memory, to provide low-latency and durable caching solutions. Unlike traditional volatile memory-based caches, NVMecache combines the speed of DRAM with the persistence of storage media, reducing access latency while ensuring data durability.

The system operates by maintaining a portion of frequently accessed data in NVM, allowing applications to benefit from faster retrieval times compared to disk-based storage. NVMecache is particularly useful in scenarios where both performance and reliability are critical, such as databases, in-memory computing, and real-time analytics. By caching hot data in NVM, the system minimizes the need for expensive DRAM while avoiding the slower access times associated with traditional storage.

NVMecache is implemented as a software layer that sits between the application and the underlying storage, managing data placement and eviction policies. It supports various data structures, including key-value stores and in-memory databases, and integrates with existing systems through standard interfaces. The persistence of NVM ensures that cached data survives system reboots, reducing the risk of data loss in crash scenarios.

Developed as an open-source project, NVMecache aims to provide a flexible and scalable solution for modern computing environments. It is designed to work with existing hardware and software stacks, making it accessible for deployment in both research and production settings. The project continues to evolve, incorporating advancements in NVM technology to further optimize performance and reliability.