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OpenSearch vs VictoriaLogs

OpenSearch: Apache-licensed, foundation-governed fork of Elasticsearch for search, vectors and observability. VictoriaLogs: Log database from the VictoriaMetrics team: schemaless ingestion, LogsQL and low RAM and disk use.

key differences

  • OpenSearch is built for larger datasets (Multi-PB) than VictoriaLogs (≤ 1 PB).
  • Transactions: OpenSearch offers limited ACID; VictoriaLogs offers none.
  • Only OpenSearch has secondary indexes, vector search, geospatial, encryption at rest, role-based access.
  • Only VictoriaLogs has ttl / expiry, columnar storage.

choose opensearch for

  • +Log analytics and observability
  • +Application and e-commerce search
  • +Vector and hybrid search for RAG on AWS
  • +Security event analytics

best at · Search, Vector search, RAG

choose victorialogs for

  • +Centralised application and Kubernetes logs
  • +Replacing an ELK stack to cut cost
  • +Debugging by trace or request ID across services
  • +Audit and security event retention

best at · Observability, Search, Time-series

OpenSearchApache-licensed, foundation-governed fork of Elasticsearch for search, vectors and observability.
VictoriaLogsLog database from the VictoriaMetrics team: schemaless ingestion, LogsQL and low RAM and disk use.
overview
Primary model
Search Engine
Search Engine
Also supports
Document, Vector, Spatial, Time-Series
Time-Series, Columnar / OLAP
Type
Database engine
Database engine
Status
Active
Active
Developer
OpenSearch Software Foundation (Linux Foundation)
VictoriaMetrics Inc.
First release
2021
2023
Latest version
3.9.0 (Sep 29, 2026)
1.53.0 (Oct 1, 2026)
License
Open source (permissive)Apache License 2.0
Open source (permissive)Apache License 2.0
Free tier
✓
✓
popularity
WhichDB Score
56.6
19.4
Rank
#18
#169
GitHub stars
13.9K
2.4K
Stack Overflow questions
1.1K
–
scale & guarantees
Comfortable data size
Massive (Multi-PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Native
Multi-region
Read replicas
None
ACID
Limited
None
Consistency
Eventual
Eventual
Schema
Flexible
Schemaless
Architecture
Distributed, Client server
Single node, Distributed
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
AWS, Oracle Cloud, Aiven, DigitalOcean
–
capabilities
Transactions
—
—
Joins
—
—
Secondary indexes
✓
—
Full-text search
✓
✓
Vector search
✓
—
Geospatial
✓
—
JSON
✓
✓
Change data capture
—
—
Triggers
—
—
Stored procedures
—
—
Materialized views
—
—
TTL / expiry
—
✓
Pub/Sub
—
—
Columnar storage
—
✓
In-memory
—
—
Durable persistence
✓
✓
Compression
✓
✓
Encryption at rest
✓
—
Role-based access
✓
—
Time travel
—
—
Branching
—
—
Online schema changes
✓
—
Streaming ingest
✓
✓
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
Query DSL, PPL, SQL
LogsQL
Client languages
Java, Python, JavaScript, Go, .NET, Ruby, PHP, Rust
–
Best for
Search, Vector search, RAG, Observability
Observability, Search, Time-series
Add more to this comparisonNot sure either fits? Try smart match

OpenSearch vs VictoriaLogs: FAQ

What is the difference between OpenSearch and VictoriaLogs?

OpenSearch: Apache-licensed, foundation-governed fork of Elasticsearch for search, vectors and observability. VictoriaLogs: Log database from the VictoriaMetrics team: schemaless ingestion, LogsQL and low RAM and disk use. OpenSearch is built for larger datasets (Multi-PB) than VictoriaLogs (≤ 1 PB). Transactions: OpenSearch offers limited ACID; VictoriaLogs offers none. Only OpenSearch has secondary indexes, vector search, geospatial, encryption at rest, role-based access.

When should I choose OpenSearch over VictoriaLogs?

Choose OpenSearch for log analytics and observability; application and e-commerce search; and vector and hybrid search for RAG on AWS. Choose VictoriaLogs for centralised application and Kubernetes logs; replacing an ELK stack to cut cost; and debugging by trace or request ID across services.

Is OpenSearch or VictoriaLogs more popular?

OpenSearch ranks #18 on the WhichDB Score (56.6/100) and VictoriaLogs ranks #169 (19.4/100). Popularity is not fit: check the requirements that matter for your project.

Are OpenSearch and VictoriaLogs open source?

Yes. OpenSearch is open source. License: Apache License 2.0. Yes. VictoriaLogs is open source. License: Apache License 2.0.