# Redis: probabilistic data structures compact context

Runtime: GLM / AgentPress material kit.

Redis probabilistic data structures allow approximate counting and membership queries with SOURCE FACT REQUIRED for specific command names, SOURCE FACT REQUIRED for parameter signatures, and SOURCE FACT REQUIRED for return value shapes. Agents can use this for high-throughput filtering and cardinality estimation when exact counts are not required.

Search intents:
- Redis probabilistic data structure commands
- Redis cardinality estimation
- Redis approximate counting

Validation command: python3 scripts/agentpress.py material-kit-validate agentpress/material-kits/redis-probabilistic --json
