JDap: Supporting in-memory data persistence in javascript using Intel's PMDK.

Data persistence is a feature that the data needs to live longer than its creator. The state-of-the-art is in-memory data persistence, requiring data in the memory to be persistent even when the application crashes. So far in-memory data persistence has been supported in many programming languages such as C, C++, and Java. However, it has not yet been well supported in JavaScript, a popular scripting language for software development. To solve this problem, we introduce JDap, an extension to JavaScript’s runtime and execution engine, to support in-memory data persistence in JavaScript using Intel’s Persistent Memory Development Kit (PMDK). JDap consists of (1) a JavaScript persistent object pool that serves as a heap in which persistent objects can be created, managed, and accessed safely and consistently. In particular, this pool supports shared memory parallelism, allowing persistent data to be accessed in parallel; (2) a set of JavaScript APIs that provides programmers with supports in managing and accessing persistent data in an easy-to-use and safe manner.