This is an extension to the LeanStore Storage Engine which has been implemented here (LeanStore) is a high-performance OLTP storage engine optimized for many-core CPUs and NVMe SSDs. Our goal is to achieve performance comparable to in-memory systems when the data set fits into RAM while being able to fully exploit the bandwidth of fast NVMe SSDs for large data sets. While LeanStore is currently a research prototype, we hope to make it usable in production in the future.

Here, we are introducing Namespace-oriented recovery to recover namespaces based on priority. In a nutshell, we are isolating WAL entries of each namespace to achieve this segregation so that we can recover the namespaces on priority basis

Compiling

Install dependencies:

sudo apt-get install cmake libtbb2-dev libaio-dev libsnappy-dev zlib1g-dev libbz2-dev liblz4-dev libzstd-dev librocksdb-dev liblmdb-dev libwiredtiger-dev liburing-dev

mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo .. && make -j && cd ..

Create a 10GB file named 'leanstore_ssd_file'

dd if=/dev/zero of=leanstore_ssd_file bs=1G count=10

Give permissions

chmod 777 ./leanstore_ssd_file

Cite

LeanStore was originally implemented using Pointer Swizzling (paper). More recently, LeanStore was also completely rewritten from scratch, replacing Pointer Swizzling with Virtual-Memory Assisted Buffer Pool (Paper).