# RedisBloom 2.0 release notes

```json metadata
{
  "schema_version": 2,
  "title": "RedisBloom 2.0 release notes",
  "description": "Added more probabilistic data structures, including top-K and count-min sketch.",
  "categories": ["docs","operate","stack"],
  "tableOfContents": {"sections":[{"id":"requirements","title":"Requirements"},{"id":"v203-july-2019","title":"v2.0.3 (July 2019)"},{"id":"v200-june-2019","title":"v2.0.0 (June 2019)"}]}

,
  "codeExamples": []
}
```

## Requirements

RedisBloom v2.0.3 requires:

- Minimum Redis compatibility version (database): 4.0.0
- Minimum Redis Enterprise Software version (cluster): 5.0.0

## v2.0.3 (July 2019)

- Performance improvements:
    - #[95](https://github.com/RedisBloom/RedisBloom/issues/95) Top-K - Reduce checks on heap, now only checks if item count is larger than minimum in heap.
    - #[95](https://github.com/RedisBloom/RedisBloom/issues/95) Top-K - The power of decay was calculated every time. Changed to use a lookup table.
- Major bug fix:
    - #[88](https://github.com/RedisBloom/RedisBloom/issues/88) Replication available for newly added Top-K and Count-min sketch
- Minor bug fixes:
    - #[89](https://github.com/RedisBloom/RedisBloom/issues/89) Module update broke rdb files
    - #[98](https://github.com/RedisBloom/RedisBloom/issues/98) Compilation for macOS

## v2.0.0 (June 2019)

We are proud to announce that we doubled the number of probabilistic data structures that are generally available in RedisBloom.  Full documentation is available on [redisbloom.io](https://redisbloom.io)

- #[70](https://github.com/RedisBloom/RedisBloom/issues/70) Top-K
    - [Commands](https://redis.io/docs/latest/develop/data-types/probabilistic/top-k)
    - [Algorithm](https://www.usenix.org/conference/atc18/presentation/gong)

- #[65](https://github.com/RedisBloom/RedisBloom/issues/65) Count-min Sketch
    - [Commands](https://redis.io/docs/latest/develop/data-types/probabilistic/count-min-sketch)
    - [Algorithm](https://en.wikipedia.org/wiki/Count%E2%80%93min_sketch)