jvm - Are there any advantages of using Chronicle Map for java.util.String over .`intern` method for the purpose of lowering heap usage? -

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intention reduce old gen size in order lower gc pauses.

in understanding chronicle map store objects in native space , (starting java 8) string#intern same because interned string in metaspace.

i curious whenever need use chronicle map, or it's ok stick intern method.

chroniclemap couldn't serve direct replacement of string.intern() because java.lang.string instances on-heap. won't win anything, storing strings in chroniclemap, because before using them deserialize them on-heap object.

chroniclemap data structure, (not java implementation, maybe c++) indeed used sort of caching textual data, inter-process. suspect far seeking. example on java side, require separate value class (not string , not stringbuilder), implementing charsequence @ best.

also, don't need intern, deduplication more effective, see java.lang.string catechism talk, "intern" section.


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