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Operation command
In Redis, the string type data structure is used to implement BitMap, so the maximum upper limit is 512M, and the conversion to bit is 2^32 bits.
The operation commands of BitMap are:
- SETBIT: store a 0 or 1 to the specified position (offset)
- GETBIT : Get the bit value of the specified position (offset)
- BITCOUNT: Count the number of bits with a value of 1 in BitMap
- BITFIELD: Operate (query, modify, increment) the value of the specified position (offset) in the bit array in the BitMap
- BITFIELD_RO : Get the bit array in BitMap and return it in decimal form
- BITOP: Perform bitwise operations on the results of multiple BitMaps (AND, OR, XOR)
- BITPOS : Find the position of the first occurrence of 0 or 1 in the specified range in the bit array
