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Ways to preserve a memory cache

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# 8  
Old 09-13-2012
Should try Java bindings for BDB (Oracle Berkeley DB Java Edition | Oracle Berkeley DB)

It will provide interface to file based b-tree or hash table where you can cache raw objects without serialization. I use it often in C/C++ for file based caching since its pretty damn fast and has superb scaling even on caches with sizes of many terabytes.
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Corona688 migurus
# 9  
Old 09-17-2012
Quote:
Originally Posted by Corona688
Can objects actually live inside the mapped file?

If not, you might as well use an ordinary file, there's no advantage.
I am not 100% sure. Just looking at the java doc:
Code:
A region of a file may be mapped directly into memory; for large files this is often much more efficient than invoking the usual read or write methods.

# 10  
Old 09-17-2012
The file may be cached, but if you have to create it from scratch every time, so what? It'd be cached without mmap too.
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