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SQLite

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description SQLite Overview

SQLite embeds a SQL database engine directly within an application instead of requiring a separate database server. A persistent database normally resides in a single portable file, making local storage straightforward to distribute and back up. The engine is widely used in mobile and desktop software as well as embedded devices. Its zero-configuration approach is useful when an application needs structured data without a separately managed service.

Transactions and SQL queries provide more control than a collection of loosely organized text files. SQLite suits offline tools and local data stores, and it can also support suitable web applications. Its main concurrency constraint is that only one writer can modify a database at a time, even though multiple readers are supported. Workloads requiring many simultaneous writes may call for a client-server database.

The distinction is the workload, not a blanket rule that SQLite cannot serve a web backend.

help SQLite FAQ

Why is SQLite considered a serverless database?

SQLite does not require a separate background server process to function; instead, the entire database is stored as a single ordinary file on the disk. This serverless architecture makes it incredibly easy to set up and manage without complex configurations.

What is the maximum size limit for an SQLite database file?

The theoretical maximum size of an SQLite database is roughly 281 terabytes, provided the host operating system can handle files that large. In practical terms, users generally face file system limitations long before hitting the database's actual limits.

Is SQLite free to use for commercial purposes?

Yes, SQLite is completely free for both private and commercial purposes, with no license required. It is entirely in the public domain, meaning developers can use, modify, and distribute the code without any restrictions or fees.

Can SQLite handle concurrent writes from multiple users?

SQLite is generally not recommended for high-volume concurrent write operations, as it typically locks the entire database file during a write transaction. However, it handles concurrent reads exceptionally well and is the standard for local storage in mobile applications.

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