2-level cache in java

Question

guys How can I organize level 2 cache in java? 1st level - memory 2nd level - file system

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

thank

Answer 1

I suggest using imcache and loading the necessary elements from disk using the 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();  

Answer 2

It seems that using option 2 with the option to overwrite to disk will work for the OP. These 2 URLs can help: http://memcached.org/ and http://ehcache.org/

Answer 3

, , , . http://www.javalobby.org/java/forums/t48846.html

, java, 1.) HashMap 2.) Memcached 3.) 4.)

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Answer 4

OS Cache - http://www.opensymphony.com/oscache/wiki/Feature%20List.html .

• - .

• It transparently stores the most used data in memory and then swaps the rest into the file system (you can change the algorithm)

• It scales well. Even for a large number of objects, it does not show a decrease in performance.

• It also supports clustering.

• He is very customizable

• It is FREE and open source!

Answer 5

I created something that can be useful for your needs.

https://github.com/enryold/onion-cache