LFS - High Performance Key Value Storage Engine

Storage

Records are written to an append-only binary file (AOF) and in-memory hash-tables are used for indexing records. Hash tables keep track of the offset of a record for a given key allowing for fast access.

Data is stored in the following format:

<keyLength>key<valueLength>value

The keyLength and valueLength are binary encoded uint16 integers.

Both key and value are of type string.

Usage

Connect to the server using any TCP client such as netcat (nc)

nc localhost 8080

Once connected, you can use any of the available commands to interact with the engine -

1. set [key] [value]
2. get [key]
3. exit