You might want to take a look at https://github.com/LiveAsynchronousVisualizedArchitecture/simdb https://github.com/LiveAsynchronousVisualizedArchitecture/si...

You might want to take a look at https://github.com/LiveAsynchronousVisualizedArchitecture/simdb https://github.com/LiveAsynchronousVisualizedArchitecture/si... It is a completely lock free key value store, though does not have eviction built in. Its memory management is done using a free list of blocks, which is part of how it maintains lock free concurrency.