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6 changes: 5 additions & 1 deletion documentation/introduction.md
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title: Introduction
title: "QuestDB Documentation - SQL Time-Series Database Guides"
sidebar_label: Introduction
hide_title: true
slug: /
description:
Official QuestDB documentation covering installation, data ingestion, SQL
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import { HeroPattern } from "../src/components/HeroPattern"
import { DocButton } from "../src/components/DocButton"

# Introduction

QuestDB is an open source time-series database engineered for low latency. It uses a column-oriented, time-partitioned storage engine with memory-mapped files and vectorized (SIMD) execution to support high-throughput ingestion and millisecond-level analytical queries. The system is built from scratch with a zero-GC Java core and focused C++/Rust components, in a compact codebase optimized for cache locality and predictable tail latency. SQL is extended with time-series operators such as `SAMPLE BY`, `LATEST ON`, `ASOF JOIN`, and `WINDOW JOIN`. See [Architecture](https://questdb.com/docs/architecture/questdb-architecture/) for details.

<div className="not-prose mb-16 mt-6 flex gap-3">
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