I am working on an application in which I need to create and often access thousands of files. For reasons of using disk space, I only want to keep a fixed number of these files at any given time. For example, files are written to the C: \ my-folder folder. When my folder reaches 1000 files, if I need to save a new file, I would like to delete the LRU file from my folder. Is such use of ehcache (or any caching tool) possible? I thought I could use disk storage in ehcache, but whenever I call getin the cache, it looks only at the keys that are in memory, not on the disk.
Below are some snippets of code:
// create the cache
CacheManager cm = CacheManager.create();
String name = getName();
CacheConfiguration config = new CacheConfiguration(name, 1)
.maxElementsOnDisk(2000).diskPersistent(true)
.overflowToDisk(true).eternal(true).diskStorePath(name)
.memoryStoreEvictionPolicy(MemoryStoreEvictionPolicy.LRU);
Cache cache = new Cache(config);
cm.addCache(cache);
// I do a couple of puts
cache.put(new Element("key1", val1));
cache.put(new Element("key2", val2));
cache.flush();
// now key1 is no longer in the cache (since max memory size is 1), but I'd like to look on disk since I have set maxElementsOnDisk to 2000
Element el = cache.get("key1");
Thank,
Jeff