setrange

SETRANGE

SETRANGE key offset value

Available since 2.2.0.

Time complexity: O(1), not counting the time taken to copy the new string in place. Usually, this string is very small so the amortized complexity is O(1). Otherwise, complexity is O(M) with M being the length of the value argument.

Overwrites part of the string stored at key, starting at the specified offset, for the entire length of value. If the offset is larger than the current length of the string at key, the string is padded with zero-bytes to make offset fit. Non-existing keys are considered as empty strings, so this command will make sure it holds a string large enough to be able to set value at offset.

Note that the maximum offset that you can set is 2²⁹ -1 (536870911), as Redis Strings are limited to 512 megabytes. If you need to g

登录查看完整内容