Constant esp_idf_sys::RingbufferType_t_RINGBUF_TYPE_BYTEBUF

pub const RingbufferType_t_RINGBUF_TYPE_BYTEBUF: RingbufferType_t = 2;

Byte buffers store data as a sequence of bytes and do not maintain separate items, therefore byte buffers have no overhead. All data is stored as a sequence of byte and any number of bytes can be sent or retrieved each time.