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Category | CloudSearch limitation | OpenSearch Solution |
|---|---|---|
Query Language | Limited query flexibility | Full Elasticsearch Query DSL (JSON-based, supports bool, range, fuzziness, slop, intervals etc.) |
Custom Ranking | Minimal relevance tuning (Only via expr) | Function score queries, script scoring, boosting fields for advanced tuning |
Multi-field search | No native multi-field search | Use multi-match to search across multiple fields simultaneously |
Field Types | Limited field types (no boolean, nested, etc.) | Wide support: text, keyword, boolean, geo_point, nested, etc. |
Monitoring | No detailed logging or query trace | Built-in slow query logs, profiling, and monitoring via CloudWatch + APIs |
Aggregation/Facets | Limited aggregation capabilities (facets only) | Aggregations framework: terms, range, date_range, etc. |
Security | Only IAM-based security | Fine-grained access control (roles, field-level, document-level security) |
Data ingestion | Limited ingest and update options | Supports bulk API, ingestion pipelines, Logstash, BeatsGrafana, real-time indexing |
Testing | No testing tools or dev utilities | OpenSearch Dashboards with Dev Tools, query profiling, real-time testing |
Scaling & Performance Tuning | Scaling is automatic, but not tunable | Control over shards, replicas, index-level tuning, or serverless |
Integration | Limited integration ecosystem | Integrates with Kibana (Dashboards), Beats, Logstash, Grafana, etc. |
Autocomplete | Simple suggesters | Completion + edge n-gram + full control |
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