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Feature/Aspect | GreptimeDB | TimescaleDB |
---|---|---|
Data Model | Unified Observability Database | PostgreSQL-based Time-Series Database |
Value Model | Multi-Value (supports complex data structures) | Multi-Value (relational model with time-series optimization) |
Multi-model Support | Metrics, Logs & Traces in one database | Time-series data only (requires separate systems for logs/traces) |
Ingestion Protocols | SQL gRPC InfluxDB Line Protocol Prometheus Remote Storage OpenTelemetry HTTP API | SQL PostgreSQL protocol COPY commands Various connectors |
Query Languages | SQL & PromQL (dual interface) | SQL (PostgreSQL-compatible) |
Data Retention | Flexible TTL policies with automatic tiering | Data retention policies with automatic deletion |
Continuous Aggregation | Built-in SQL aggregation, Pipeline ETL engine & Flow streaming computation | Continuous aggregates (materialized views) |
Use Cases | Unified observability, real-time analytics, IoT monitoring, edge computing | Financial analytics, IoT applications, infrastructure monitoring, application metrics |
Architecture | Cloud-native distributed with compute-storage separation | PostgreSQL extension with hypertable partitioning |
Storage Format | Apache Parquet (columnar, compressed) | PostgreSQL heap storage Columnar storage (enterprise) |
PostgreSQL Compatibility | Native SQL support with observability extensions | Full PostgreSQL compatibility and ecosystem |
Scaling Model | Horizontal scaling with stateless compute nodes | Vertical scaling (open source) Distributed hypertables (enterprise) |
High Availability | Native clustering with automatic failover | PostgreSQL HA solutions (streaming replication, etc.) |
License | Apache 2.0 | Timescale License (community) Commercial (enterprise features) |
Cloud Integration | Native object storage support with S3, GCS, etc. | TimescaleDB Cloud service |
Deployment Options | Single-node, cluster, Kubernetes-native, edge-to-cloud with unified API | PostgreSQL-based deployment, managed cloud service |
Written Language | Rust (memory safety, performance) | C (PostgreSQL extension) |