At present the library is limited to storing all its data in PROGMEM which, on the ESP8266, is limited to 1MB. Large BLOBs would ideally be stored in a separate flash partition.
For example:
// Length of the data
constexpr size_t stringLength = 85535;
// Address of data within the flash
constexpr uint32_t stringAddress = 0x200000;
DEFINE_FSTR_EXT(myExternalString, stringLength, stringAddress);
The idea would be that the length is stored in PROGMEM, but the data is external.
At present the library is limited to storing all its data in PROGMEM which, on the ESP8266, is limited to 1MB. Large BLOBs would ideally be stored in a separate flash partition.
For example:
The idea would be that the length is stored in PROGMEM, but the data is external.