Library for maintaining on-disk cache [closed]

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I'm looking for a library for C/C++/Obj-C to maintain on-disk cache for my objects.

• There is large number of objects (tens of thousands) and each object is 100+Kb in size
• Objects are constantly accessed/added, sometimes large group of objects is replaced

Currently I just store each object in separate file but I don't want to create so many files in the filesystem. Is there any library to work with such cache that will use one/several files instead?

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You can make a collection (NSArray, NSSet, NSDictionary) with all your objects and use NSKeyedArchiver/NSKeyedUnarchiver to put that into a single file.

You can also use an SQLite database or CoreData, the advantage being that you wouldn't have to have everything loaded into memory at once if, you just pull objects out of it as needed. Especially if you have (tens of thousands * 100+Kb, which would never fit into memory anyway...).

You could also use C++ serialization libraries (although getting them to work with obj c objects would be tricky..., more recommended for C++ objects) like boost serialization/archive (can output binary, text, xml), again you could use collections (std::list, std::map ...) to store them all into one file.

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I solved my problem using Tokyo Cabinet library. Works faster than using separate files for each object.