Introduction to the Redis Extension

The Steadybit Redis Extension enables chaos engineering for Redis instances and databases. It discovers your Redis infrastructure and provides attacks and checks to validate resilience under various failure scenarios.

Integration and Functionality

Integration of Redis into Steadybit works via the go-redis client library. The extension connects to your Redis instances and may require appropriate permissions to:

• Read server, memory, replication, and cluster information
• Execute CONFIG GET/SET commands
• Create and delete keys
• Execute CLIENT PAUSE and DEBUG SLEEP commands

Integration of Redis in Steadybit

Apply memory pressure in various ways:

• Fill memory with random data
• Reduce maxmemory to force evictions or OOM errors
• Create and delete large keys in cycles

Simulate data loss and cache failures:

• Delete keys matching a pattern
• Force cache expiration by setting short TTLs
• Simulate cache penetration with non-existing key lookups

Test connection and availability limits:

• Exhaust connections to test connection limit handling
• Pause all client command processing
• Stop a Sentinel server to test failover behavior
• Trigger a background save (BGSAVE)

In parallel, you can check:

• Memory usage against thresholds
• Response latency
• Connection count
• Replication lag and master link status
• Cache hit rate
• Blocked clients count

Installation and Setup

To integrate the Redis extension with your environment, follow our setup guide.