Time-series Database
16.9k 2026-04-18
questdb/questdb
QuestDB is a high-performance, open-source time-series database designed for blazingly fast data ingestion and low-latency SQL queries.
Core Features
High-throughput, low-latency data ingestion
SQL with specialized time-series extensions (e.g., ASOF JOIN, SAMPLE BY)
Multi-tier storage engine (WAL → native columnar → Parquet)
Postgres protocol and REST API for flexible integration
Web console for interactive queries and data management
Detailed Introduction
QuestDB is an open-source, high-performance time-series database engineered for demanding workloads, offering exceptional speed for both data ingestion and analytical SQL queries. It leverages a column-oriented storage model, parallelized vector execution, and SIMD instructions for hardware efficiency. Ideal for financial market data, sensor telemetry, and real-time monitoring, QuestDB simplifies complex time-series challenges like out-of-order data and schema changes, providing a robust and scalable solution.