Glossary term
What is HLC (Hybrid Logical Clock)?
HLC stands for Hybrid Logical Clock.
Combines wall-clock time and a counter for ordering. Example: Used by CockroachDB.
Learn it properly · System DesignLesson 28: Consistency Models: Strong, Eventual and In Between“Eventually consistent” can mean your own comment vanishes on refresh. Consistency is a spectrum, not a switch: linearizable, causal, session guarantees and eventual — what each promises, how conflicts get merged, and why clocks can't be trusted.