Lucene RAMDirectory deprecated - how to keep Directory RAM-only anyway?
Question
I'm currently using the class org.apache.lucene.store.RAMDirectory for a fast RAM-based index without the requirement of hard disk write permissions. RAM size & persistence is not a limiting factor. However, RAMDirectory is marked as deprecated and also seems to be problematic for large indexes according to its API .
So my question is, what is a RAM-only alternative for the deprecated RAMDirectory ?
Anything writing on hard disk is out of the question for me (read only) & also seems to be quite a bit slower on my own systems. I was thinking about using FSDDirectory with a RAMDisk but couldn't find a way to create said RAMDisk using java / the jar only (again requires changing the system).
2 answers
solution1
2 ACCPTED 2021-07-08 12:26:40
ByteBuffersDirectory is the replacement for RAMDirectory .
The chart below makes it crystal clear why RAMDiretory was depreciated and then removed. BBDIR is ByteBuffersDirectory and RAMDIR is RAMDirectory .
Chart by Dawid Weiss. Source: LUCENE-8438 and shown under Apache 2.0 License. .
solution2
0 2021-07-08 12:40:39
你也可以只创建一个ramdisk
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