There is a new version of the PublishQueueAsyncRK library (0.1.0). This version supports pluggable storage modules, including:
- Retained memory
- Regular RAM
- FRAM (MB85RC256V ferro-electric non-volatile RAM) connected by I2C
- SPI NOR Flash (ISSI, Winbond, or Macronix) using SpiffsParticleRK
- SPI Flash memory on P1 module
- SPI Flash soldered to E Series module (Macronix MX25L8006EM1I-12G)
- SD cards using the SdFat library