zbigniev / lrudiskcache

Disk based LRU Cache

lrudiskcache

Disk based LRU Cache

This project is very much a WIP

This is a thread safe implementation of LRU Cache where cache size is bound by two parameters

1. valueCount: It bounds the number of nodes allowed in the in-memory data structure.
2. maxSize: It bounds the max storage size in directory in disk.

Storage Structure

The in-memory storage structure uses LinkedHashMap where key is a String and value is a Node with fields

• fileName: A string representing filename containing data.
• dataSize: A long storing size of data.

The actual data is a byte array, stored on disk.

TODO

1. Add a journal file to directory structure which stores the in-memory data structure, and can be used for initialization of in-memory data structure.
2. Add a constructor which clears the storage directory on start-up.