Redis Library

Redis is an in-memory data structure store that can be used as a database, cache, and message broker. The following functions provide a set of operations to interact with Redis using the provided library.

Connect

Attempts to establish a connection to the Redis server with the specified host and port.

Input Parameters: - Host: The hostname or IP address of the Redis server. - Port: The port number on which the Redis server is running.
Return Value: - A boolean indicating whether the connection was successfully established.

Disconnect

Closes the connection to the Redis server.

Input Parameters: - None.
Return Value: - None.

Reconnect

Closes the current connection (if any) and attempts to reconnect to the Redis server.

Input Parameters: - None.
Return Value: - None.

IsConnected

Checks if there is an active connection to the Redis server.

Input Parameters: - None.
Return Value: - A boolean indicating whether a connection to the Redis server is active.

Set

Sets the value of a key in Redis.

Input Parameters: - Key: The name of the key. - Value: The value to be stored.
Return Value: - A boolean indicating whether the operation was successful.

Get

Retrieves the value of a key from Redis.

Input Parameters: - Key: The name of the key. - Value: The retrieved value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

Delete

Deletes a key from Redis.

Input Parameters: - Key: The name of the key.
Return Value: - A boolean indicating whether the operation was successful.

Exists

Checks if a key exists in Redis.

Input Parameters: - Key: The name of the key.
Return Value: - A boolean indicating whether the key exists.

Expire

Sets an expiration time (in seconds) for a key in Redis.

Input Parameters: - Key: The name of the key. - Seconds: The number of seconds after which the key will expire.
Return Value: - A boolean indicating whether the operation was successful.

TTL

Gets the remaining time to live (in seconds) of a key in Redis.

Input Parameters: - Key: The name of the key.
Return Value: - The remaining time to live of the key, or -2 if the key does not exist or has no associated expire.

Append

Appends a value to an existing key in Redis.

Input Parameters: - Key: The name of the key. - Value: The value to be appended.
Return Value: - A boolean indicating whether the operation was successful.

Increment

Increments the value of a key in Redis by 1.

Input Parameters: - Key: The name of the key. - Value: The incremented value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

Decrement

Decrements the value of a key in Redis by 1.

Input Parameters: - Key: The name of the key. - Value: The decremented value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

IncrementBy

Increments the value of a key in Redis by a specified amount.

Input Parameters: - Key: The name of the key. - Increment: The amount by which to increment the value. - Value: The incremented value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

DecrementBy

Decrements the value of a key in Redis by a specified amount.

Input Parameters: - Key: The name of the key. - Decrement: The amount by which to decrement the value. - Value: The decremented value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

HSet

Sets the value of a field in a Redis hash.

Input Parameters: - Key: The name of the hash. - Field: The name of the field. - Value: The value to be set.
Return Value: - A boolean indicating whether the operation was successful.

HGet

Retrieves the value of a field from a Redis hash.

Input Parameters: - Key: The name of the hash. - Field: The name of the field. - Value: The retrieved value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

HDel

Deletes a field from a Redis hash.

Input Parameters: - Key: The name of the hash. - Field: The name of the field.
Return Value: - A boolean indicating whether the operation was successful.

HGetAll

Retrieves all fields and values from a Redis hash.

Input Parameters: - Key: The name of the hash. - Fields: The retrieved fields and values will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

HExists

Checks if a field exists in a Redis hash.

Input Parameters: - Key: The name of the hash. - Field: The name of the field.
Return Value: - A boolean indicating whether the field exists.

HIncrBy

Increments the value of a field in a Redis hash by a specified amount.

Input Parameters: - Key: The name of the hash. - Field: The name of the field. - Increment: The amount by which to increment the value. - Value: The incremented value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

LPush

Inserts one or more values at the beginning of a Redis list.

Input Parameters: - Key: The name of the list. - Value: The value to be inserted.
Return Value: - A boolean indicating whether the operation was successful.

RPush

Inserts one or more values at the end of a Redis list.

Input Parameters: - Key: The name of the list. - Value: The value to be inserted.
Return Value: - A boolean indicating whether the operation was successful.

LPop

Removes and retrieves the first element from a Redis list.

Input Parameters: - Key: The name of the list. - Value: The removed value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

RPop

Removes and retrieves the last element from a Redis list.

Input Parameters: - Key: The name of the list. - Value: The removed value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

LLen

Gets the length of a Redis list.

Input Parameters: - Key: The name of the list. - Length: The length of the list will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

LRange

Retrieves a range of elements from a Redis list.

Input Parameters: - Key: The name of the list. - Start: The starting index of the range. - Stop: The ending index of the range. - Values: The retrieved values will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

LIndex

Retrieves an element from a Redis list by its index.

Input Parameters: - Key: The name of the list. - Index: The index of the element. - Value: The retrieved value will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

SAdd

Adds a member to a Redis set.

Input Parameters: - Key: The name of the set. - Member: The member to be added.
Return Value: - A boolean indicating whether the operation was successful.

SRem

Removes a member from a Redis set.

Input Parameters: - Key: The name of the set. - Member: The member to be removed.
Return Value: - A boolean indicating whether the operation was successful.

SCard

Gets the number of members in a Redis set.

Input Parameters: - Key: The name of the set. - Size: The size of the set will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

SIsMember

Checks if a member exists in a Redis set.

Input Parameters: - Key: The name of the set. - Member: The member to be checked.
Return Value: - A boolean indicating whether the member exists in the set.

SMembers

Retrieves all members of a Redis set.

Input Parameters: - Key: The name of the set. - Members: The retrieved members will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

ZAdd

Adds a member with a score to a Redis sorted set.

Input Parameters: - Key: The name of the sorted set. - Member: The member to be added. - Score: The score associated with the member.
Return Value: - A boolean indicating whether the operation was successful.

ZRem

Removes a member from a Redis sorted set.

Input Parameters: - Key: The name of the sorted set. - Member: The member to be removed.
Return Value: - A boolean indicating whether the operation was successful.

ZCard

Gets the number of members in a Redis sorted set.

Input Parameters: - Key: The name of the sorted set. - Size: The size of the sorted set will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

ZRange

Retrieves a range of members from a Redis sorted set by their scores.

Input Parameters: - Key: The name of the sorted set. - Start: The starting index of the range. - Stop: The ending index of the range. - Members: The retrieved members will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.

ZRevRange

Retrieves a range of members from a Redis sorted set by their scores in reverse order.

Input Parameters: - Key: The name of the sorted set. - Start: The starting index of the range. - Stop: The ending index of the range. - Members: The retrieved members will be stored in this output parameter.
Return Value: - A boolean indicating whether the operation was successful.