Command reference

Provides an additional replication-source command whose verified invocation is rejected.

Appends bytes to a string value.

Authenticates the connection using the configured password.

Starts a background save.

Counts set bits in a string value.

Updates and reads an integer encoded in a string's bits.

Reads an integer bit field without modifying the string.

Stores the bitwise OR of source strings in a destination key.

Finds the position of the first matching bit.

Moves an element from the source's left end to the destination's right end, with a waiting timeout.

Pops a batch from a list's left end with a waiting timeout.

Removes a list's leftmost element, waiting up to a timeout when necessary.

Removes a list's rightmost element, waiting up to a timeout when necessary.

Moves the source's rightmost element to the destination's left end, waiting when necessary.

Removes a batch of lowest-score members with a waiting timeout.

Removes the highest-score member, waiting up to a timeout if needed.

Removes the lowest-score member, waiting up to a timeout if needed.

Manages connection naming and library metadata and reports client identity.

Calculates a key's hash slot through KEYSLOT.

Counts registered commands or extracts command key arguments.

Reads or changes runtime configuration and resets command statistics.

Copies a key's value to a destination key.

Counts keys in the selected database.

Decrements an integer string value by one.

Subtracts an integer amount from a string counter.

Inspects, pauses or resumes defragmentation maintenance.

Deletes a key.

Cancels the queued transaction.

Serializes a key's value for transfer to RESTORE.

Returns the supplied message.

Executes a supplied Lua script with declared keys.

Executes a cached Lua script identified by its SHA digest.

Executes a cached Lua script through the read-only invocation path.

Executes a Lua script through the read-only invocation path.

Executes the commands queued by MULTI.

Counts existing keys among the supplied names.

Sets a key's remaining lifetime in seconds.

Sets a key's expiry to an absolute Unix timestamp in seconds.

Reports a key's absolute expiry timestamp in seconds.

Invokes a function registered in a loaded library.

Invokes a registered function through the read-only path.

Requests removal of all database contents.

Removes keys from the selected database.

Manages registered function libraries and their serialized representation.

Adds a named geographic location to a key.

Reports the distance between two stored locations in kilometers.

Returns the geohash representation of a stored location.

Returns a stored member's geographic coordinates.

Finds stored locations within a radius of supplied coordinates.

Finds locations within a radius of a stored member.

Performs a read-only radius query centered on a stored member.

Performs a read-only radius query around supplied coordinates.

Finds locations by radius around a named member.

Stores the results of a member-centered geographic radius search.

Retrieves the string value stored at a key.

Reads the bit at a string's specified bit offset.

Returns a string value and removes its key.

Retrieves a string while setting its expiry in seconds.

Returns a byte range from a string.

Replaces a string value and returns its previous value.

Removes a field from a hash.

Selects RESP2 or RESP3 and reports connection and server information.

Checks whether a hash contains a field.

Retrieves one hash field's value.

Retrieves all fields and values from a hash.

Adds an integer increment to a hash field.

Adds a floating-point increment to a hash field.

Returns the field names in a hash.

Counts the fields in a hash.

Retrieves hash field values in the requested order.

Sets hash fields using merge semantics.

Returns a randomly selected hash field name.

Iterates over a hash's fields and values using a cursor.

Adds or updates fields in a hash.

Sets a hash field only if that field does not exist.

Reports the byte length of a hash field's value.

Returns the values stored in a hash.

Increments an integer string value by one.

Adds an integer increment to a string counter.

Adds a floating-point increment to a numeric string.

Reports server or replication status information.

Returns key names matching a pattern.

Reports the timestamp of the last successful save.

Atomically replaces all fields of an existing hash while preserving its key expiry.

Returns a longest common subsequence of two string values.

Returns the list element at a specified index.

Inserts an element before a matching list pivot.

Returns the number of elements in a list.

Moves the source list's leftmost element to the destination's right end.

Removes a requested batch from the left end of a list.

Removes and returns the leftmost list element.

Finds the position of a matching list element.

Prepends an element to a list.

Prepends an element only to an existing list.

Returns a range of list elements.

Removes matching elements from a list.

Replaces the list element at an index.

Keeps a specified list range and removes elements outside it.

Retrieves several string values in key argument order.

Streams observed command activity to the connection.

Stores several string key-value pairs in one command.

Stores all supplied string pairs only if none of their keys exists.

Starts queuing commands for a transaction.

Removes a key's expiry.

Sets a key's remaining lifetime in milliseconds.

Sets a key's expiry to an absolute Unix timestamp in milliseconds.

Reports a key's absolute expiry timestamp in milliseconds.

Checks whether the connection can receive a server response.

Stores a string with an expiry measured in milliseconds.

Subscribes the connection to channels matching a pattern.

Reports a key's remaining lifetime in milliseconds.

Sends a message to matching channel and pattern subscriptions.

Reports the number of channel subscribers.

Removes a pattern subscription from the connection.

Requests the end of the client connection.

Returns a randomly selected key from the database.

Accepts a connection read-mode request.

Accepts a connection read/write-mode request.

Changes a key's name.

Renames a key only when the destination does not exist.

Requests standalone master role with the NO ONE form.

Resets the connection's session state.

Creates a key from a serialized value.

Reports the server's current replication role.

Removes and returns the rightmost list element.

Moves the source list's rightmost element to the destination's left end.

Appends elements to a list.

Appends an element only to an existing list.

Adds a member to a set.

Performs a synchronous save.

Iterates over keys using a cursor and a pattern filter.

Returns a set's member count.

Loads scripts, checks their presence, or clears the script cache.

Returns members of the first set that are absent from the second.

Stores a set difference in a destination key.

Requests a logical database for the connection.

Stores a string, optionally with tested existence conditions or expiry.

Changes one bit in a string and returns its previous value.

Stores a string with an expiry measured in seconds.

Stores a string only when its key does not exist.

Overwrites string bytes starting at an offset.

Returns members shared by the input sets.

Counts members in a set intersection.

Stores the intersection of input sets.

Checks whether a set contains a member.

Requests standalone master role using the SLAVEOF command name.

Inspects or clears the slow-command log.

Returns all members of a set.

Checks several set members in one request.

Moves a member from one set to another.

Returns the elements of a collection in sorted order.

Returns sorted collection elements through the read-only command.

Removes and returns a randomly selected set member.

Returns a random set member without removing it.

Removes a specified member from a set.

Iterates through set members with a cursor.

Returns the byte length of a string value.

Subscribes the connection to messages on a channel.

Returns a substring selected by byte offsets.

Returns the union of input sets.

Stores a set union in a destination key.

Inspects or toggles the TombRaider maintenance service.

Touches the supplied keys and reports how many exist.

Reports a key's remaining lifetime in seconds.

Reports the value type stored at a key.

Removes a key from the keyspace.

Removes a channel subscription from the connection.

Clears the connection's watched-key registrations.

Requests a replication acknowledgement count for preceding writes.

Registers a key for optimistic transaction conflict detection.

Acknowledges a stream entry pending in a consumer group.

Appends an entry with a specified ID to a stream.

Scans and transfers eligible pending entries to a consumer.

Transfers a pending entry to another consumer.

Deletes a stream entry by ID.

Creates stream consumer groups and consumers, or destroys a group.

Reports stream metadata.

Returns the number of entries in a stream.

Summarizes a consumer group's pending entries.

Returns stream entries in ascending ID order within a range.

Reads stream entries after a supplied ID.

Delivers new stream entries to a consumer in a group.

Returns stream entries in descending ID order within a range.

Sets the stream's last-generated ID metadata.

Trims a stream to a maximum entry count.

Adds members with scores to a sorted set.

Counts members in a sorted set.

Counts sorted-set members within a score range.

Returns the difference of sorted-set inputs.

Stores a sorted-set difference in a destination.

Adds an increment to a sorted-set member's score.

Returns the intersection of sorted-set inputs.

Counts members in a sorted-set intersection.

Stores a sorted-set intersection in a destination.

Counts members within a lexicographical range.

Removes a batch of lowest-score members from a sorted set.

Retrieves scores for several sorted-set members.

Removes and returns the highest-score member and its score.

Removes and returns the lowest-score member and its score.

Returns a random sorted-set member without removing it.

Returns a rank range of sorted-set members with their scores.

Returns sorted-set members within a lexicographical range.

Returns members within an ascending score range.

Stores a rank range from a sorted set in a destination key.

Returns a member's rank in ascending score order.

Removes a specified member from a sorted set.

Removes members within a lexicographical range.

Removes sorted-set members within a rank range.

Removes sorted-set members within a score range.

Returns a rank range in descending score order.

Returns a lexicographical range in reverse order.

Returns a score range in descending order.

Returns a member's rank in descending score order.

Iterates through sorted-set members and scores with a cursor.

Retrieves the score of a sorted-set member.

Returns the union of sorted-set inputs.

Stores a sorted-set union in a destination.