In Redis, the SINTERSTORE command is the same as the SINTER command, except that it stores the result in the specified key, instead of returning it.
It stores the members of the set resulting from the intersection of all the given sets.
If the destination key already exists, it’s overwritten. If it doesn’t exist, it’s created and the resulting members are added to it.
Continue readingIn Redis, the SINTER command returns the members of the set resulting from the intersection of all the given sets.
In Redis, the SDIFFSTORE command works just like the SDIFF command, except that instead of returning the result, it stores it in the key that we specify. The destination key will then hold the members of the set resulting from the difference between the first set and all the successive sets.
In Redis, the SDIFF command returns the members of the set resulting from the difference between the first set and all the successive sets. In other words, it returns all members of the first set that aren’t in any of the successive sets.
In Redis, the SCARD command returns the number of members in the specified set. This is referred to as the cardinality of the set.
In Redis, the SADD command allows us to add members to a key. We can add multiple members if required.
A Redis set is an unordered collection of unique strings (members).
Continue readingIn Redis, we can use the OBECT IDLETIME command to check how many seconds has passed since the last access to a given key.
In Redis, the LTRIM command allows us to trim a list to a specified number of elements. We specify the starting and ending index, which is used to trim the list to just that range.
In Redis, the LSET command allows us to set a list element to a different value, based on its index.
In Redis, we can use the LREM command to remove one or more elements from a list. The number of elements removed depends on the arguments we pass.