arduino-esp32/libraries/EEPROM/README.md

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## EEPROM
EEPROM is deprecated. For new applications on ESP32, use Preferences. EEPROM is provided for backwards compatibility with existing Arduino applications.
EEPROM is implemented using a single blob within NVS, so it is a container within a container. As such, it is not going to be a high performance storage method. Preferences will directly use nvs, and store each entry as a single object therein.