Key features mentioned in the release notes are:<p><pre><code> - Bloom filters for queries ('needle in haystack' problem)
- Native OpenTelemetry support
- Updated helm charts
- Lambda/Promtail support dropping labels
- Docs improvements
</code></pre>
Personally, I'm thrilled that the problem with high-cardinality labels will [hopefully] get addressed after 6 years (that's the top item, with bloom filters).<p>The architecture Loki has chosen is great for keeping costs down and using simple blob-storage (S3) for data. However, it makes it hard to quickly query unique keys such as trace IDs or user IDs. But bloom filters will hopefully will do the job.<p>I raised the needle in haystack problem back in 2018, so it's great to see this landing:<p><a href="https://github.com/grafana/loki/issues/91">https://github.com/grafana/loki/issues/91</a><p>For anyone that's curious, bloom filters is a clever technique:<p><a href="https://en.wikipedia.org/wiki/Bloom_filter" rel="nofollow">https://en.wikipedia.org/wiki/Bloom_filter</a>