Introduction

Opens many connections to a Redis instance to exhaust the available connection pool and test how applications handle connection limit errors. The connections are held open for the configured duration and released when the attack ends.

Combine with Connection Count Check to verify that your application detects and handles the connection pressure correctly. For latency-based faults, use Pause Clients instead.

Use Cases

• Test how applications handle Redis connection pool exhaustion and maxclients limit errors.
• Verify that connection pooling libraries reconnect gracefully after connections are released.
• Validate alerting triggers when Redis connection count approaches the configured limit.

Parameters

Parameter	Description	Default
Duration	How long to hold the connections open.	60s
Number of Connections	Number of connections to open simultaneously. Minimum 1, maximum 10000.	100