Hlc

The Hlc type is a string that represents a Hybrid Logical Clock (HLC) value.

string

HLCs are used to provide a globally unique timestamp that can be used to order events across distributed systems. The Hlc type in TinyBase is a sortable 16 character string that encodes a timestamp, a counter, and the hash of a unique client identifier.

• 42 bits (7 chars) for the time in milliseconds (~139 years).
• 24 bits (4 chars) for the counter (~16 million).
• 30 bits (5 chars) for the hash of unique client id (~1 billion).