memcached

A simple memcached implementaion as defined by Memcached Protocol with support of getter/setter.

Prerequisite

Install gcc! Developed and well tested under MacOS. It doesn't work on Windows. Not yet tested on other linux family system.

Running the server

Make sure you have 11211 port available for the application. Check out the repository and run the following command.

make
./server

Server will be running on 11211 port.

test-client/test.python is a simple client for verification. To run the test client, make sure you have python installed:

pip install python-binary-memcached
python test-client/test.python

Design decisions

1. Multi-threading: Main thread is responsible of accepting socket connections. After accepting TCP connection, a new thread will be created to handle the response.

2. Map implementation: Map is implemented by using linked list. It is a bad choice since the lookup of linked list has O(n) time. It is implemented this way solely because it is easy to develop within a short time.

3. Locking: Every entry in the map has a lock. Implemented using linux pthread rwlock.

Things to improve

1. Map implementation
2. Robustness