### Relevant Articles:

- [Java Map With Case-Insensitive Keys](https://www.baeldung.com/java-map-with-case-insensitive-keys)
- [Using a Byte Array as Map Key in Java](https://www.baeldung.com/java-map-key-byte-array)
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- [Optimizing HashMap’s Performance](https://www.baeldung.com/java-hashmap-optimize-performance)