2-level cache in java

Question

How can I organize a 2 level cache in Java?

• 1st level - memory
• 2nd level - filesystem

Where I can find information about 2 level cache implementation and cache strategies configuration or can you show me any methods that can solve this problem.

Answer 1

I suggest using imcache and load necessary items from disk using cache loader as follows,

Cache<String,Object> yourCache = CacheBuilder.
   concurrentHeapCache().cacheLoader(new CacheLoader<String, Object>() {
   public Object load(String key) {
   //code to load item from file.
   }
}).build();