ZSET.I64

Sets a key to a signed 64-bit integer value in the ZMap ordered key-value store.

Syntax

ZSET.I64 <key> <value> [NAMESPACE <path>]

Arguments

key and value are positional. NAMESPACE is a keyword argument and comes after them.

Argument	Type	Required	Description
key	bytes	Yes	The key to set.
value	integer	Yes	A signed 64-bit integer to store.
NAMESPACE	string	No	Run this command in the given namespace instead of the session’s current one. The namespace must exist. The session’s current namespace does not change.

Return Value

Simple string: OK on success.

Behavior

ZSET.I64 writes a typed 64-bit integer value for a key in the ZMap subspace of the session’s current namespace. The value is encoded as 8 bytes in little-endian two’s complement format, the same encoding used by ZINC.I64 and read by ZGET.I64.

If the key already exists, its value is overwritten silently.

The full signed 64-bit range is supported: from -9223372036854775808 to 9223372036854775807.

The command supports two transaction modes:

• Auto-commit (one-off): When no explicit transaction is active, Kronotop creates a transaction, performs the write, and commits it immediately. This is the default mode.
• Explicit transaction: When a BEGIN has been issued, the write is staged in the current transaction and only persists when COMMIT is called.

All data is scoped to a namespace: the session’s active one, or the one given with NAMESPACE. The same key in different namespaces refers to different entries.

Errors

Argument errors:

Error Code	Error message	Cause
ERR	wrong number of arguments for 'ZSET.I64' command	-
ERR	value is not a long or out of range	The value is not a signed 64-bit integer.
ERR	Unknown '<keyword>' argument	-
ERR	NAMESPACE argument must be followed by a namespace	-

Namespace errors:

Error Code	Error message	Cause
NOSUCHNAMESPACE	No such namespace: '<path>'	-
NAMESPACEBEINGREMOVED	Namespace '<path>' is being removed	-

Examples

Set an integer value:

> ZSET.I64 counter 42
OK

> ZGET.I64 counter
(integer) 42

Overwrite an existing value:

> ZSET.I64 counter 100
OK

> ZSET.I64 counter 200
OK

> ZGET.I64 counter
(integer) 200

Set a negative value:

> ZSET.I64 balance -500
OK

> ZGET.I64 balance
(integer) -500

Use within an explicit transaction:

> BEGIN
OK

> ZSET.I64 tx-counter 42
OK

> COMMIT
OK

> ZGET.I64 tx-counter
(integer) 42