---
title: Redis
slug: telemetry-pipeline/dJnl-redis
docTags: 
createdAt: 2025-04-21T01:03:05.299Z
---

## Redis Sink

### Overview

The Redis sink publishes observability data to a Redis instance and can be used as a lightweight buffering, queuing, or fan-out mechanism within a telemetry pipeline. It supports logs, metrics, and traces, making it suitable for both transient streaming use cases and short-term data staging.

This sink is stateless and optimized for fast ingestion, with configurable buffering, encoding, acknowledgement handling, and support for multiple Redis data structures.

### Redis Data Types

list – Queue-like structure using push/pop semantics

channel – Pub/Sub based broadcasting to multiple subscribers

sortedset – Score-based ordered storage, suitable for time or priority ordering

### Required Configuration

inputs
 List of upstream source or transform IDs.

endpoint
 Redis connection URL in the form of protocol://host\:port/db.
 Both redis and rediss (TLS-enabled) schemes are supported.

key
 Redis key used to publish messages.
 Supports dynamic templating based on event fields.

encoding.codec
 Defines how events are serialized before being written to Redis.

### Encoding

The Redis sink supports multiple encoding formats, including:

json

text

raw\_message

logfmt

csv

cef

gelf

protobuf

otlp

avro

Encoding configuration determines which event types (logs, metrics, traces) are supported and how data is serialized before being sent to Redis.

### Buffering

Optional buffering improves throughput and resilience during downstream slowdowns:

memory – High performance, volatile

disk – Durable, survives restarts

Behavior when full:

block (default)

drop\_newest

### Acknowledgements

The Redis sink supports sink-level end-to-end acknowledgements.
 When enabled, upstream sources that support acknowledgements will wait until events are successfully written to Redis before marking them as delivered.

### List Options

For list data type, the following push methods are supported:

rpush – Append messages to the tail of the list (default)

lpush – Insert messages at the head of the list

### Sorted Set Options

For sorted set data type, messages are inserted with an associated score.
 Scores can be static or dynamically derived from event fields using templates.

### TLS and Security

Secure Redis connections are supported using the rediss scheme or explicit TLS configuration:

Encrypted connections

Optional certificate verification

Support for secure and insecure TLS modes

### Redis Sentinel Support

The Redis sink can connect via Redis Sentinel for high availability deployments:

Sentinel service discovery

Configurable authentication

RESP2 and RESP3 protocol support