> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Cluster Replication Lag (seconds), Neo4j KPI card, Vortex IQ Nerve Centre

> Max last-applied-tx lag of any FOLLOWER vs LEADER (dbms.cluster.overview()). Enterprise cluster only.

**[Nerve Centre KPIs](/nerve-centre/kpi-cards/neo4j) · [Audit Profile](/nerve-centre/kpi-cards/neo4j/audit) · [Sentiment Settings](/nerve-centre/kpi-cards/neo4j/sentiment)**

## At a glance

* **Category:** Cluster
* **Type:** Key Metrics
* **Chart:** kpi
* **Format:** number
* **Time window:** RT
* **Alert trigger:** >10s

## Calculation

Max last-applied-tx lag of any FOLLOWER vs LEADER (dbms.cluster.overview()). Enterprise cluster only.

## Known limitations

*Known limitations, FAQs, or reconciliation notes specific to this card. Replace this block when authored.*