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#jdk18
#11: More String Deduplication
On average, ~25% of heaps are char arrays for strings and roughly half of them are duplicates. 😳 Since 2017, G1 deduplicates them, which saves ~10% heap size.
Other GCs followed suit:#JDK17: Shenandoah#JDK18: ZGC, Serial GC, and Parallel GC
