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Month: August 2015

Implementing a Key-Value Store – Part 9: Data Format and Memory Management in KingDB

This is Part 9 of the IKVS series, “Implementing a Key-Value Store”. You can also check the Table of Contents for other parts. In this series of articles, I describe the research and process through which I am implementing a key-value database, which I have named “KingDB”. The source code is available at Please note that you do not need to read the previous parts to be able to follow. The previous parts were mostly exploratory, and starting with Part 8 is perfectly fine.

In this article, I explain how the storage engine of KingDB works, including details about the data format. I also cover how memory management is done through the use of a compaction process.