Counts the number of set bits (population counting) in a string. The optional start and end arguments specify a range of bytes to count.

The BITOP command performs bitwise operations between strings (AND, OR, XOR, NOT) and stores the result in the destination key.

The BITPOS command returns the position of the first bit set to 1 or 0 in a string, optionally looking within a specific range.

The SET command in DiceDB is used to set the value of a key. If the key already holds a value, it is overwritten, regardless of its type. This is one of the most fundamental operations in DiceDB as it allows for both creating and updating key-value pairs.

The GET command retrieves the value of a key. If the key does not exist, nil is returned.

The DEL command removes the specified keys. A key is ignored if it does not exist.

The EXISTS command checks if one or more keys exist. It returns the number of keys that exist.

The INCR command increments the number stored at the key by one. If the key does not exist, it is set to 0 before performing the operation.

The DECR command decrements the number stored at the key by one. If the key does not exist, it is set to 0 before performing the operation.

The DECRBY command decrements the number stored at key by the given decrement.

The ECHO command returns the given message as a bulk string.

The EXPIRE command sets a timeout on key. After the timeout has expired, the key will be automatically deleted.

The EXPIREAT command works exactly like EXPIRE but instead of specifying the number of seconds for the key to live, it takes an absolute Unix timestamp.

The MGET command retrieves the values of multiple keys. If a key does not exist, nil is returned for that key.

The MSET command sets the given keys to their respective values. This is a faster alternative to issuing multiple SET commands.

The HSET command sets the specified fields to their respective values in a hash stored at key. If the key does not exist, a new key holding a hash is created.

The HGET command retrieves the value of a specific field from a hash stored at the key.

The HDEL command removes the specified fields from a hash stored at key.

The HGETALL command retrieves all fields and values of a hash stored at key.

The HEXISTS command returns if the field exists in the hash stored at key.

The HLEN command returns the number of fields contained in the hash stored at key.

The INCRBYFLOAT command increments the float value stored at key by the specified increment.

The LPUSH command inserts the specified values at the head (left) of the list stored at key.

The RPUSH command inserts the specified values at the tail (right) of the list stored at key.

The LPOP command removes and returns the first element of the list stored at key.

The RPOP command removes and returns the last element of the list stored at key.

The SADD command adds the specified members to the set stored at key. If a member already exists, it is ignored.

The SMEMBERS command retrieves all the members of the set stored at key.

The PING command checks if the server is running and returns a PONG response.

The PFADD command adds elements to a HyperLogLog data structure stored at the specified key. If the key does not exist, a new HyperLogLog is created.

The PFCOUNT command returns the approximated cardinality (number of unique elements) of the HyperLogLog data structure stored at the specified key.

The PFMERGE command merges multiple HyperLogLog data structures into a single one, stored at destkey.

The TTL command returns the remaining time to live of a key that has an expiration set. If the key does not exist, -2 is returned.

The HELLO command is used to connect to the server and switch to the desired protocol. It can be used to specify a version of the protocol.

The GETSET command sets the value of a key and returns its old value. This operation is atomic.

The GETEX command retrieves the value of a key and can set an expiration time for it in the same command.

The GETDEL command retrieves the value of a key and deletes it in the same atomic operation.

The COMMAND command provides information about the commands supported by the server, including details like the command name and the number of calls.

The JSON.INGEST command allows you to insert a JSON document into a specified key. If the key already holds a value, it will be overwritten.

The JSON.GET command retrieves a JSON value from the specified key. You can specify a path to get a nested value.

The JSON.SET command sets a JSON value at a specified path in the key. If the key does not exist, a new JSON document is created.

The JSON.DEL command removes a JSON value at a specified path in the key. If the path does not exist, no action is taken.

The JSON.TYPE command returns the type of a JSON value at the specified path. If the path does not exist, it returns null.

The JSON.NUMINCRBY command increments a numeric value at a specified path in the key by the given increment.

The JSON.MERGE command merges multiple JSON documents into a single destination key.

The JSON.KEYS command retrieves all keys from a JSON document at a specified path.

The JSON.FILTER command filters JSON data based on a specified filter condition.