---
title: "Reference"
slug: "dev-event-broker-reference"
updated: 2026-10-28T02:15:22Z
published: 2026-10-28T02:15:22Z
canonical: "docs.vastdata.com/dev-event-broker-reference"
---

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

# Reference

Exact broker behaviour to look up. Check Kafka compatibility before you bring an existing client or tool; use Topic configuration and Limits of VAST Event Broker when you set configs or plan topics.

- **[Kafka compatibility](/develop/docs/dev-event-broker-reference-kafka-compatibility)**: Supported Kafka clients, listeners, APIs and versions, the Kafka features Event Broker lacks, and what clients see when they use one.
- **[Topic configuration](/develop/docs/dev-event-broker-reference-topic-configuration)**: Which Kafka topic configs Event Broker honours, which it stores but ignores, which it rejects, and how partition count works.
- **[Limits of VAST Event Broker](/develop/docs/dev-event-broker-reference-limits)**: Topic, partition, message, consumer group, Kafka view and blob expansion limits for Event Broker in VAST Cluster 5.5.