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Elasticsearch vs OpenSearch

Side-by-side comparison of Elasticsearch and OpenSearch. Data-driven analysis for CTOs and engineering leaders.

Technical Profile

Elasticsearch

Scalability
very high
Performance
high
Learning Curve
moderate
Maturity
mature
Languages: Java

OpenSearch

Scalability
very high
Performance
very high
Learning Curve
moderate
Maturity
stable
Languages: Java

When to Use

Elasticsearch

  • +Full-text search required
  • +Log aggregation and analysis
  • +Real-time analytics
  • +Large-scale search

Avoid Elasticsearch when

  • -Small datasets
  • -Primary transactional database
  • -Limited ops resources
  • -Simple keyword search sufficient

OpenSearch

  • +Open source search
  • +Log analytics
  • +AWS preference

Avoid OpenSearch when

  • -Need ES compatibility
  • -Simple search

Compliance & Security

Elasticsearch

SOC 2GDPRHIPAAPCI-DSS

Security Features

EncryptionAudit LogsRBACMFA

OpenSearch

SOC 2GDPRHIPAAPCI-DSS

Security Features

EncryptionAudit LogsRBACMFA

Operations

Elasticsearch

Maintenance
high
Monitoring
high
Backup/Recovery
moderate
Hosting: self-hosted, cloud, managed

OpenSearch

Maintenance
high
Monitoring
high
Backup/Recovery
moderate
Hosting: self-hosted, cloud

Frequently Asked Questions

How does scalability compare between Elasticsearch and OpenSearch?

Elasticsearch offers very-high scalability, while OpenSearch offers very-high scalability. Consider your expected traffic and data volume when choosing.

Which has the easier learning curve: Elasticsearch or OpenSearch?

Elasticsearch has a moderate learning curve, while OpenSearch has a moderate learning curve. Factor in your team's existing skills and onboarding timeline.

What are the pricing differences between Elasticsearch and OpenSearch?

Elasticsearch uses a freemium pricing model starting at Free tier available, paid starts at $95/month with a free tier. OpenSearch uses a free pricing model with a free tier. Evaluate total cost of ownership including operational overhead.

Which option is better for compliance: Elasticsearch or OpenSearch?

Elasticsearch supports SOC 2, GDPR, HIPAA, PCI-DSS. OpenSearch supports SOC 2, GDPR, HIPAA, PCI-DSS. Always verify current certifications directly with the vendor.

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