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Diffstat (limited to 'iredis/data/commands/msetnx.md')
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diff --git a/iredis/data/commands/msetnx.md b/iredis/data/commands/msetnx.md new file mode 100644 index 0000000..e332223 --- /dev/null +++ b/iredis/data/commands/msetnx.md @@ -0,0 +1,24 @@ +Sets the given keys to their respective values. `MSETNX` will not perform any +operation at all even if just a single key already exists. + +Because of this semantic `MSETNX` can be used in order to set different keys +representing different fields of an unique logic object in a way that ensures +that either all the fields or none at all are set. + +`MSETNX` is atomic, so all given keys are set at once. It is not possible for +clients to see that some of the keys were updated while others are unchanged. + +@return + +@integer-reply, specifically: + +- `1` if the all the keys were set. +- `0` if no key was set (at least one key already existed). + +@examples + +```cli +MSETNX key1 "Hello" key2 "there" +MSETNX key2 "new" key3 "world" +MGET key1 key2 key3 +``` |