[14-Jan-2022 Note: this blog post has been updated due to the renaming of our database from MemKeyDB to TieredMemDB] Context Redis is an in-memory database that supports various data-structures and stores them in main memory. To support data durability, Redis relies on creating periodical snapshots …

Introduction In the PMDK team, we focus on the quality of our codebase. One of the standard practices in the software development is a static code analysis, which improves the overall project quality and fixes bugs in the early stage of development. Since there is no silver bullet for avoiding bugs, …

There are several ways to program with persistent memory from Java. A recent pmem.io blog article described the pmemkv library, a persistent key-value store, which can be used from multiple languages. For Java, pmemkv supports three ubiquitous Java types: String, byte[], and ByteBuffer. Another PMDK …

At the end of the first part of this blog series, I posed three fundamental questions regarding the design of failure atomic data structures for persistent memory. What does it mean to allocate persistent memory? How to do fail-safe atomic updates? Are all data structures suitable for persistent …

pmemkv is a local/embedded key-value datastore optimized for persistent memory. It is written in C and C++, but to satisfy a wider audience it comes with several bindings for high-level languages. Currently: Java (with JNI), Node.js, Python and Ruby. The picture below illustrates architecture and …