Dory

A lightweight key-value cache system developed for experimental purposes. It can also include distributed systems setup if I can.

Main Idea

Dory's main idea is to use blocks that store key:value pairs in small size and pop into memory in different modes. For example, in basic mode, two packs with a maximum of 1000 key:values can be managed by two different threads. In Advanced mode, 16 different threads can share a total of 16000 key:value pairs.

Message Structure

Dory uses her own private messages. The format of network packets coming to the server is in a certain standard.

• The commands that can be used are certain and cannot exceed 3 letters.
• The first part of message contains the key name. Key lengths are fixed and cannot exceed 16 characters.
• If the ADD command is used, the third and last blocks are used.
  • The third block contains object's type.
  • The last block contains the concrete object's value. The object length is shaped according to the type specified in the previous section.

For example

• ADD|ServerName|s|localhost
• GET|ServerName|
• DEL|ServerName|
• ADD|Logs|l|false|
• ADD|DefaultPi|f32|3.1415|

s is String, l is boolean, i8 is i8, U32 is u32... Data types are arranged according to the Value enum constant.

pub enum Value {
    ThinNumber(i8),
    MidNumber(i16),
    LargeNumber(i32),
    ThinFloat(f32),
    LargeFloat(f64),
    Text(&'static str),
    Logical(bool),
}

Development Check

# Open two terminal

# Basic Mode
RUST_LOG=info cargo run basic

# Other terminal
echo "ADD|ServerName|s|localhost|" | netcat localhost 5555
echo "ADD|DefaultPi|f32|3.1415|" | netcat localhost 5555
echo "GET|DefaultPi|" | netcat localhost 5555
echo "DEL|ServerName|" | netcat localhost 5555

Common Features

todo();