LilCache

Code

Lightweight cache framework written in Java for education purposes

The API

The following methods are provided in this framework:

/**
* Get size of cache
*
* @return size of cache
*/
int getSize();

/**
* Put a value into cache with a specified key
*
* @param key   key
* @param value value to be cached
*/
void put(String key, Object value);

/**
* Get value from cache
*
* @param key key of object to get
* @return value from cache
*/
Optional<Object> get(String key);

/**
* Remove a specific entry from cache
*
* @param key key
*/
void remove(String key);

/**
* Checks if a key exists in cache
*
* @param key key
*/
boolean check(String key);

/**
* Clear cache
*/
void clear();

/**
* Evict cache. Same as clear.
*/
void evict();

Implementations

  • PerpetualLilCache:
    • This simply uses Java’s HashMap to store values.
  • LRULilCache
    • This implementation is based on the Least Recently Used principle
    • It uses the PerpetualLilCache implementation through the decorator design pattern.
  • TransitoryLilCache
    • This implementation is based for the cases when you need to set an expiry time for the entries in the cache.

Note

This is a simple implementation of different techniques used in caching frameworks, mainly to understand how it all works.

LICENSE

MIT License

Copyright (c) 2018 Man Parvesh Singh Randhawa

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in all
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