{
  "id": "probabilistic",
  "title": "Probabilistic data structures configuration object",
  "url": "https://redis.io/docs/latest/operate/rs/8.0/references/rest-api/objects/bdb/probabilistic/",
  "summary": "Configuration object for probabilistic data structures",
  "content": "\nConfiguration fields for probabilistic data structures.\n\n| Field | Type/Value | Description |\n|-------|------------|-------------|\n| bf-error-rate | number (range: 0-1) (default: 0.01) | Error ratio for new Bloom filters. These defaults are applied to each new Bloom filter upon its creation. |\n| bf-initial-size | integer (range: 1-1048576) (default: 100) | Initial capacity for new Bloom filters. These defaults are applied to each new Bloom filter upon its creation. |\n| bf-expansion-factor | integer (range: 0-32768) (default: 2) | Expansion factor for new Bloom filters. These defaults are applied to each new Bloom filter upon its creation. |\n| cf-initial-size | integer (range: 1-1048576) (default: 1024) | Initial capacity for new Cuckoo filters. These defaults are applied to each new Cuckoo filter upon its creation. |\n| cf-bucket-size | integer (range: 1-255) (default: 2) | Number of items in each bucket for new Cuckoo filters. These defaults are applied to each new Cuckoo filter upon its creation. |\n| cf-max-iterations | integer (range: 1-65535) (default: 20) | Maximum iterations for new Cuckoo filters. These defaults are applied to each new Cuckoo filter upon its creation. |\n| cf-expansion-factor | integer (range: 0-32768) (default: 1) | Expansion factor for new Cuckoo filters. These defaults are applied to each new Cuckoo filter upon its creation. |\n| cf-max-expansions | integer (range: 1-65536) (default: 32) | Maximum expansions for new Cuckoo filters. These defaults are applied to each new Cuckoo filter upon its creation. |\n",
  "tags": ["docs","operate","rs"],
  "last_updated": "2026-07-23T12:05:56-05:00"
}