compare
Loki vs Apache Solr
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Loki | Apache Solr |
|---|---|---|
| Language | Go | Java |
| Licence | AGPL-3.0 | Apache-2.0 |
| Stars | 29k | 1.7k |
| Latest | v3.7.8 | releases/solr/10.0.0 |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | about 5 days between releases | too few releases |
| Active contributors | 39+ commit authors on the default branch in the last 90 days | 40 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Elasticsearch. Alternatives to Elasticsearch →
PartialLokiIndexes labels rather than full text, and queries log lines with LogQL.
Full replacementApache SolrAlso built on Lucene, with its own query API.
Loki
- v3.7.82026-09-17security/HIGH/pkg/push: Update module google.golang.org/grpc to v1.83.2 [SECURITY] (release-3.7.x) (#24433) (4d5dc2b)
- v3.6.172026-09-17security/HIGH/pkg/push: Update module google.golang.org/grpc to v1.83.1 [SECURITY] (release-3.6.x) (#24330) (d8d78f6)
- v3.7.72026-08-27Add flag to ignore missing chunks during deletion of logs with line filter [release-3.7.x] (#24233) (7a40404)
- v3.6.162026-08-27Add flag to ignore missing chunks during deletion of logs with line filter [release-3.6.x] (#24232) (b87159f)
- operator/v0.11.02026-08-18operator: v0.11.0
Apache Solr
This repository publishes tags, not GitHub releases.
Loki
✓ signed The latest release, v3.7.8, carries a signature GitHub verified.
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Apache Solr
unsigned The latest release, releases/solr/10.0.0, carries no signature GitHub could verify.
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